How To Replace Cummins 24v VP44 Pump

[@Mdrennan51]

Loved the video very helpful. Just letting you know for future reference. You don’t actually have to take both injection line sets off just the front one. And also the two smaller bolts on the intake horn fit perfectly in the two slots on the gear for pulling it out. just some things I picked up. Doing it myself after watching this video thanks for the help.

[@horsdoc5388]

nice work on your instructional videos, they help curb waste of materials and time

[@MDJB12]

Ive heard its a good idea to super glue the key into the keyway when you go to put it back inn to help reduce the risk of it falling off.

[@DOffio]

FYI Folks, at least some of the VP44's have a bracket at the rear that goes down to the block with a pair of 13mm bolts. It will not come out without pulling that stupid bracket. Ask me how I know. I don't know if that truck did not have one, or if Rich just forgot to mention it. My 2000 had it.

[@kurthuddleston8614]

Bent my bracket. ..lol

[@islotplops3357]

Just did the same thing...😂

[@gofast4127]

Love your video all these years later, no nonsense and to the point….

[@mikekempin7917]

I'd let this guy work on my truck any day.

[@chanceroberts4573]

Yeh no kidding nice to see a mechanic work' not just another parts changer' so tired of garages with no mechanics.

[@chadblechinger5746]

I bet you would 😅

[@rodneyhowell2703]

I like the way you describe how to do the job.this old man needs all the help I can get.thankyou sir

[@dodgedieselgang3760]

My truck has the same code and same problem. You have confirmed it is the injection pump because I already checked every thing you said Great video, it was very helpful. Thank you so much and keep up the good work.

[@Juliojuarez1]

How do u did for getting the code?

[@dodgedieselgang3760]

@@Juliojuarez1 what

[@Juliojuarez1]

How did you do to get that code?

[@COMM114]

Once again, the patience of Job pays off. I would have just swapped out the p-pump and hoped for the best. Everything indicated a pump problem. Given the prevalence of this pump on tractors, some mechanic locally must have seen a similar problem. Good work. I maintain a 5.9 Cummins powered 1998.5 Dodge 2500 and a 1999 Dodge 2500. They are not powered by the p-pump but it is nice to compare. I carefully note anytime you work on second-generation Dodge diesel. And yes, I have swapped out a VP 44. Thanks for the input.

[@wpiken]

I’m working on my grandson’s 2001 Ram with the 5.9 Cummins. Thanks so much for posting this video- you’re a lifesaver. (And a $ saver!)

[@superchargedpotato]

I don't let ANYONE touch my truck, I have always done all my work except for a front window. You are you only person I would ever consider let work on my truck if for some reason I couldn't. I love your videos, always good information.

[@josephmartin2362]

Good, straight to the point video (no useless chatter!). Just a clarification, you are not worried about the key way falling -- you are concerned with the key falling out of the key way. Other than that -- Great job.

[@white24valve]

If you don't mind me adding to your video Rich...when replacing g the VP44 ..I always replaced the fuel line from fuel filter housing to VP44 to a 1/2" hose..I think the inside diameter is so small the fuel..like you said isnt enough cooling for the computer box on top of pump..with a half inch hose..you get more fuel to the VP and more cooling to the VP for the computer box..I stalled a new vpp44 I got from the diesel store .com in 2009 along with a HPFP fass 95...in a friend's 01 Cummins and it is still going today..first thing I do with those lift pumps from the factory is throw them in the trash..lift pump goes out..takes out the VP44 ..there not design to pull fuel from the tank like CP3 on a Duramax...great video Rich!(keeping in mind of cost as well)lot of folks don't know about the half inch line upgrade..and I always super glued the wooddruff key into the shaft ..tap it down in there a little and make sure the top of the key is parrell with VP shaft..

[@DEBOSSGARAGE]

Thanks for that! I never mind helpful info to save anyone some dough!

[@isaacmiller8182]

Have a 99 An have a delay with wait to start light when light come on the truck will fire if the light I not on the truck will just crank has me puzzled

[@taken5875]

Isaac Miller that sounds like it could be an ecm issue to me.

[@sietherine]

Awesome videos, just the right level of detail. Easy to follow and understand. I'm halfway but confident for the second half.

[@agoogleuser7784]

You’re right about making sure the key is lined up for reassembly because when I reinstalled mine it was lined up 90% of the way and ended up going all back together. Turns out the key is timed perfectly for the pump so just by the key being barely off to the side of the key way the motor couldn’t run. When I removed it again it had barely taken the edge off the key and messed up the pump timing just enough to not run right. Took forever to find a diesel shop around that had the same numbered key that would match up for my pumps timing. Installed it perfectly lined up and the engine ran great.

[@bretbreakall1582]

Educate me Google User or anyone, I have not did one of these but are you telling me that there are different keys for different pumps that will change the timing? How can that be when there is only one slot on the shaft and one keyway on pump? did you not have it lined up perfectly and you shaved key by tightening it up? I guess I do not understand how the key can not be lined up and it still goes together easily? Thanks for your input, sorry for my ignorance, I consider myself pretty mechanical minded. (maybe not now)

[@bretbreakall1582]

After more research, Guess those keys are machined with an offset on them to dial in the timing/calibration of the pump

[@jdillon8360]

Yep, there are many different keys with different offsets. The pump repair shop uses a special tool to select and supply you with the right one. Don't lose it and don't turn it around 180 degrees in the slot either.

[@luckyvickery7621]

Direct n to the point, great side notes/insights/hints… and w/o the “watch me fumble to turn this wrench” bs that steals time from the voyeur… Bro, I thank you😌

[@skipshull7235]

Replacing my Vp soon. Thank you for the thorough video, no BS just straight to the fix. Good personality for these kinds of videos. Thanks again

[@remraf72]

Hey Rich, Fyi, I always watch your vids all the way through. I've learned some invaluable information, Thanks to you. Love the channel!

[@davekana8388]

Nice job cuz u DeBoss! Made it to the end too because everything you say is helpful, not useless jabber! Keep up the good work, Dave!

[@briancassiday453]

Lots of good tips. Camera movement was almost to much to watch, but the info was worth it.

[@eric1985elcamino]

I don't even own a cummins but I watched this entire video because it was more entertaining than most videos 😂

[@meandmy68z28]

Cool 67 GTO hiding over there @ 3:30

[@Michael-lx7px]

Thanks for the info, just replaced my VP44 thanks to your help all went smooth!

[@JP-xg8cd]

I like ur style bro straight to the point with no BS 👍🏼

[@paularteau9482]

Thank you. Again all questions answered in one vidya. I'll be doing this thos afternoon

[@CarswithNash]

"Don't be a Gary..." LMAO! I don't own a Cummins & I still watched it to the end.

[@Ka_Gg]

haha. My version is a darrell....Don't be a darrell. lol

[@michaelbenoit248]

I own a 1st gen 7.3 Powerstroke & I still like to watch Cummins stuff, cuz there isn’t much on the Powerstroke’s & the stuff there is, is trash & it’s just people trashing them cuz the 6.0, 6.4, & 6.7 give the 7.3 a bad rap. Thanks EPA for ruining fords new Diesels. Or at least the 6.0-6.4.

[@Michael-lx7px]

I live in the Rocky Mtns. and our version is a 'Citidiot'!

[@terrysnyder8378]

Pp

[@joegfjh]

Super helpful, same procedure for Freightliner chassis rigs with the ISB that we deal with

[@Xchunky97]

Great video wish it told me about the back bracket keeping the pump on, before I tried pulling the gear. Now I gotta take the timing cover off to see if there is any damage. Heard a noise when that happened.

[@stephenliviniuk7039]

I just posted about the vp44 bracket...I guarantee you probably broke the torqs head off the bolt that holds the bracket onto the block.

[@TheGeekwad]

Great Vid. You should try a VP to P Pump swap vid.

[@TheGeekwad]

Only reason i say that is because it's hard to find a ext cab/quad cab short box 12v that isn't going for $20,000.

[@mdmwelding3189]

Getting ready to take my vp out . Great video

[@hcg9199]

I'm sure you know but the key way is typically an offset key. When you order a new VP44 there SHOULD be a new key with the new pump. Make sure you use this new key. If something happens and you mix up new and old or whatever you can read the number on the top of the key ways and it will correspond with a number on the side of the VP44 housing. Those numbers need to match for the correct offset key to be used with the correct VP44. Maybe this will help someone in the future.

[@roycepaslowski5122]

lil tip, some of those hard to change electrical connectors that can unplug but are green come out like brand new if you soak them in regular coffee for a minute or two,

[@spencercampbell8396]

Just on your little comment of Cummins engineers being smart about bending the injector line around to give access to the bolt, I was always under the impression the injector lines were bent so loopdy loo because they all had to be the same length. Probably just worked out that way, but I have yet to see something engineered to be easy to work on haha

[@murraygaulding648]

I’ve always done my own work but for some reason this seems to be at the top of my list of hard to do😮. I’m going to have to though because at the moment in time there is no mechanics available in south Texas because they say they can’t find enough parts to keep going.

[@devync6111]

Thanks for telling us about the bracket in the bottom, you made me a Gary and my job way harder man, fix the video

[@OffRoadRunner94]

If you keep good clean fuel at an adequate pressure theses pumps can last a long while. I got 260,000 miles out of mine before she got wore out.

[@feeneysmechanical6215]

Great video. That's funny you get 106.5 wyrk at your house in Canada, that radio station is one block up from my work. Thanks again

[@DEBOSSGARAGE]

Tell them to stop repeating the same 3 commercials all day. I can only listen to them for about 45 minutes at a time!

[@feeneysmechanical6215]

DEBOSS GARAGE . Lol I know exactly what your saying. I have to change the the station after a while.

[@ed81ny]

Heyy there's a tool for that! 🤣 nice video you certainly put effort into your channel

[@notyou1877]

Good mechanics are hard to find. Just like dentists, lawyers and gunsmiths.

[@Michael-lx7px]

realtors, contractors, doctors, appliance repairmen, etc,,,but I do have a great attorney!

[@notyou1877]

@@Michael-lx7px I can do most of those chores myself. I still need a dentist and a lawyer.

[@panamaonthecheap]

Great video basic enough so most can follow it but not so basic to bore those that know the basics

[@wheyez1]

If you stick a magnet to the lower part of the gear, it protects the crankcase from metal.

[@riclopez1627]

Is it possible to install the vp44 at 180 degrees out? I removed the vp44 with some issues. But got it out complete with key set at 12 o’clock. Decided to rebuild vacuum pump at same time. Rotated motor to assist unspline vacuum pump. Then continued clock wise again to 12 o’clock for install after rebuilding and cleaning up everything etc. not thinking i may have flip timing 180 out? Wasn’t sure if diesel motor similar to timing of gas motor? Thank you for any assistance Rick

[@summbizzcooking1927]

Just a question wouldnt it be a good idea to replace the tappet cover gasket while that far in it?

[@mannypuerta5086]

summbizz cooking Yes. Keating Machine makes a nice fitting billet version (vented or unvented) that prevents typical leaking from the stamped steel stock cover.

[@ronwertz6837]

The best cleaning agent for any electronics is technical grade alcohol (>70% isopropyl.) When it evaporates it leaves behind no conductive residue from the alcohol.

[@johnromans732]

I'm curious, once the gear is loose does it stay in the case and do you remove the puller at that time? I'm having a hard time getting my pump to come loose. afraid I'm gonna damage something

[@mftradu]

I just use vinegar and blow the fuseboxes out with the air compressor after, works like a charm!

[@Darryl505]

I have a 2001 dodge 2500 5.9L 24v , I just bought it , was running great, I got a code so I replaced the tpps sensor, did the pedal reset, it ran pretty good , slight hesitation , but started up every time easily, drove it yesterday it , had a slight hesitation , went about 2 miles , then it died, now it just cranks , no start , checked the fuel relay it was good. Im lost now .Any suggestions or help would be great

[@ixryq8368]

I’m having this exact same issue but with no engine light but my scanner says same code. Will adding a new vp44 fix the issue or is it something else. I done already checked a few wires and grounds and relays

[@steveklopping2812]

Great video. You really gave some good, detailed information. Thanks!

[@johndorflinger2344]

Did you know that that key is serial numbered to the pump? The number on the key is stamped into the VP pump and should not be interchanged. Chrysler also says to verify the lift pump volume before replacing a P0216 code. This used to be a star part which means the dealer cannot replace the pump without first calling Chrysler's star hot line.

[@Matt-fw3xw]

Rich, great video, I did my injectors, your video was great on that as well. The VP44 came out great and new $2k VP44 went in just as great too, but what is that lil bracket for on the block side, near the injector lines, I was using the pry bar last night to get it off and couldn’t until I saw that bracket, it’s got a 10mm bolt holding it in...not sure what it went to or if I need to put it back? Anyone else maybe??

[@jimbo8972]

i have 80k miles on my vp44. i had installed a "less then 5psi" warning light. a few months later in alarmed. so i replaced the factory carter twice and installed a gauge. the carters just wernt pumping enough and at cruise speeds coldnt maintain 5psi. my cummins is in a motorhome. so freightliner recommended i change my fuel lines so i did and still no luck. so i purchased and installed a air dog frrp adjustable. it pretty much sits at 15 psi which is what air dog recommends... cummins says 8psi. alot of guys say 15psi to keep the check valve open so the cooling of the vp44 is maintained. at 15 psi i dont think it starts as well. i cut the adjustment spring and can now turn the pump down to 9 psi which is about 7 when cruising. i have removed my return full line at 5psi and i have lots of returned fuel. so i think the check valve is open at 5 psi and cooling the vp44... ive also read that the vp44 is not to be force fed which i think is happeneing at 15 psi or anything over 8 psi. im wondering what dboss or anybody else thinks about this.. what psi do you run or recommend thx jim in the soo

[@darrelclancymorris9840]

Question: do we leave the drive gear in the housing and simply pull it loose from the pump shaft? From what I saw, I couldn't tell it we were pushing the pump or pulling the gear? And will the gear stay in place even though we are moving it? Thank you.

[@jonathanspencer8305]

Thanks for every video man

[@rickwilson4154]

Have you ever changed the VP44 in a 1999 Fleetwood Discovery motor home with 5.9, 24-valve Cummins?

[@MrHeadshot1982]

What do you like better 12 valve or the 24 valve i like the 12 valve.

[@DEBOSSGARAGE]

24 valve with a p-pump

[@burtcokain2702]

DEBOSS GARAGE tell me that's a typo

[@jasontruman1215]

burt CoKain nope, it's a very common mod to take a 12v p pump and put it on the 24v motor. Solves all issues and makes a ton of power. Never came from the factory though.

[@MrHeadshot1982]

Thanks for the feed back i am little new to diesels.

[@alexmatthews2332]

Jason Truman Sure it did pretty sure it was 98.5 or 99 where it was standard. short lived though!

[@jafinjohn7367]

Hey did you have while or blue smoke coming out? I got no code in my truck right now. But few weeks ago my fass pump stop working didn’t know the fass went out drove it around 3 days and now it smoking :(

[@warmowed]

Its so cool just seeing the audi's future engine just chilling in the background :D You losing your voice? I hope you feel better

[@bandito4Hire]

Did you happen to mention the hardware connecting the VP44 to its mounting bracket needs to be removed? My mounting bracket was already broken so idk if that would work if the bracket was still in one piece

[@ranatauheed6100]

I have Nissan ZD 30 4 cylinder engine. Having vp pump same as in your video. How can I set the firing order to cylinder number 1. Can I put the key in a position same as in your video. ?

[@roberthammond6232]

North of the border, mucho mechanico. Great video!

[@camojay79]

What is the thread pitch of the bolts for the support bracket that you didn't mention?

[@jimswenson7274]

could you tell me possibly where I or what I screwed up when I got this truck its a 1999 24valve cummins had a bad oil leak when I bought it I took the pump off to put a new tappet cover gasket in to fix oil leak put all back together and now it smokes real bad cranking with key it wont start pull start it and it starts and runs fine. shut it off and it wont restart with key give it a sniff of either fire right up? thanks jim

[@glennbeadshaw727]

Awesome....hands on...no wasted time.Thankyou!

[@matty86suk]

Why not glue the key way into place for assembly? A tiny dab of jb weld would work.

[@thecashboy5133]

Any help got everything off but my gear nut just keeps spinning have truck in gear and holding alternator nut with belt on any help?

[@brianfields7714]

How do u know the pump going in is timed right with the motor ??

[@edspencer7121]

So there is no timing mark on the pump gear. So making sure the pump gear meshes with it's drive gear and keyway are the important factor.

[@jdillon8360]

Yes. key in slot = good to go

[@ziasadrudin]

Hey @debossgarage I'm in Toronto and my vp44 is shot can you suggest a rebuilder vs buying a rebuild one? I'm hearing they are cheaper to get rebuilt at a shop before buying one rebuilt. Appreciate the help

[@billyadams9985]

Lol first one I did I dropped the keyway... Wish KZbin was a thing before I did it

[@douglarue8485]

Nice video. My new lift pump tricked me into running out of gas at just under 1/4 tank and now I can't get'r running. Put 10 gal in, bled the top forward banjo on the filter then bleed the return line on the vp44. get good pressure squirts from that banjo. Then I had someone crank the engine with #6,#4, #3 injector nut loose and when I saw pulsing flow I'd shut that one then the next and next. But it still won't start. 1yr old ECM and 3 month old lift pump. Lots of cranking is wearing on the batteries. And they are tired after the failed ECM issue when mechanic shops(two of them) each drained the batteries trying to diagnose(kept telling me it was the vp44) but would always start the truck fine over the past year. Do I need to bleed more injectors?

[@chilidog73]

Maybe you can help... I was having an issue with a surge in my tyranny. I read that it could be an electrical issue or my converter so I cleaned all my battery and ground connections and it quit. But then lately it has been dying when shifting from reverse into drive or vice versa. Any suggestions?

[@sepresley1]

thanks for your help...much appreciated from lower alabama

[@raulortega9468]

Would a bad seal or bad pump cause a fuel /oil mix???? Having that issue on mine

[@xmrrush8355]

do you have a brand or company you would recommended when buying one of these injector pumps, I upgraded the lift pump but it was to late, truck still runs great but every once in awhile gets dead pedal and has the injector pump code so I know it's just a matter of time before the injector pump completely fails

[@teamcummins]

Blue chip diesel

[@benhcollinsministry]

I wish you had done 2 things: 1. showed a picture of the puller attached to the drive gear. 2. showed a picture of the drive gear from the rear before installing the unit. I don't understand what holds the gear in time while you remove the pump unit.

[@stephenliviniuk7039]

All you need is a steering wheel puller. The gear dosent get pulled out, all your doing is pushing the vp44 out if using a steering wheel puller. The gear stays in the timing cover, and it cannot go out of time or fall out

[@jdillon8360]

the timing can't go out because the drive gear is connected to all the other timing components inside the timing cover (crankshaft, etc), plus it sits in its own bearing/bushing.

[@francisstorry6753]

Hey I stayed till the too, Learning you ! ROCK ON !

[@joeboone2146]

What are your thoughts on the fuel boss mechanical lift pump?

[@electricamir248]

Great video. Does VP stand for very problematic? I have a 24v cummins in my f650. I don't like the heater grid activating after engine starts. It makes the belt squeal from electrical load, and I don't see a need for it. Is that by design or is the input sensor to blame? Update: someone routed the serpentine belt incorrectly so there was not enough belt contact on alternator pulley.

[@elkhunter3382]

I have my heater on a toggle switch so when the switch is closed everything operates normal, as soon as the truck starts I let the heater cycle 1-2 times then I shut the switch off, intake heater stays off. you reroute the small wires thru a switch, small wires activate the solonoid that turns the heater on/off

[@DirtyLilHobo]

As important as that lift pump was to the life of the high-pressure fuel pump there should have been a fuel pressure gauge to monitor the lift pump pressure. A design flaw, perhaps intentional, that assures your high-pressure fuel pump will fail and cost thousands.

[@MrDuramaximus]

My Dodge done that and I put a throttle position sensor on and it fixed it

[@athletejmv]

Awesome video. Much appreciated. You make it seem so simple lol.

[@claysumm5398]

Getting ready to do this job. wish me luck

[@luckyvickery7621]

After watching this a second time, I realized the motor number sticker on the valve cover, #202; MY TRUCK IS #201😏…98 1/2 Ram 3500 Dually w 5spd manual… too cool…

[@troycifer42]

I have seen kits for the 24 valve to convert it to a P-pump. I think they are over $3000 US dollars. Worth it or not?

[@devinc3224]

If you're looking for reliability and performance without a doubt it's worth it.

[@six440pack]

Only if you plan on making high hp, the vp is reliable so long as you've got good fuel pressure being fed to it

[@Boilermaker-83]

six440pack I have a hard time agreeing with the VP44s reliability. I replaced mine along with a frame side lift pump and still have issues with the computer telling the pump it needs to go to limp mode. Code reads the throttle positioning sensor and boost control module are bad even after replacing them both with OEM parts. It’s something in front of all that. I’m so deep into it I can’t sell it or fix it.

[@railfan8895]

Do the math on that project. $3000 for a P-pump conversion. That $3000 will buy two quality VP-44s plus a high performance lift pump system. That should cover you for the life of a typical truck. Plus, when you convert to the P-pump, you’re going to lose cruise control functionality.

[@twinsnails6674]

@@railfan8895 You won't lose cruise control unless it's a 02 manual truck.

[@marsh31z]

Very good job ,I know this is wrong but I was tempted to bump the starter with someone watching to line up the keyway ,I know you think its a bad idea lol, would that really mess something up?

[@jdillon8360]

Nope, it's a fine idea. You won't break anything

[@sludo56]

Great vid Rich

[@ze_german2921]

What year 12V Cummins engine do you recommend for an 80s GMC truck? I would like to make 400HP for towing and realize that there are a bunch of Pumps and conversions

[@felixpalacios4696]

Good job made it all the way to the end , very helpful I got a 1999 24 valve someone ran out of fuel I have already bled the air out , ! Will not start!!

[@thehavok4258]

Dont forget about the bracket that you cant see under the vp44. You will wreck stuff and make your life hell if you dont remove it. Best case scenario i only have to remove my power steering pump and use easy outs to get the broken bolts out of the block for the vp bracket. I might have to replace my vp44 and tear the truck apart to change the gear case because i didnt remove that bracket. All this to replace a really bad leaking tappet cover gasket. Its like the time the turbo drain tube was stuck, so my buddy cut if off so we could get the turbo out and get at it, then the last 3 inches of the metal fell into the block and i had to do a pan removal (several hour job). Im just so lucky.

[@bryandozer6452]

im currently taking my vp44 of my 2002 dodge ram and when i turn the main nut in the front the whole serpentine belt and pulleys move with it so its not breaking ideas on what i should do

[@jdillon8360]

let the threads soak with a penetrating oil or WD40, at least an hour, overnight if necessary. You can also give the nut a couple of hits with a hammer or hammer and punch. Careful with the radiator though. Don't worry, you won't hurt the pump. I don't know if there's room to get an air wrench (rattle gun) in there but that should crack it free as well. Finally, are using a nice long breaker bar?

[@bryanhauschild4376]

You sound like a person I want to work on my 24V. What state are you in? I’m an aircraft mechanic. I like to fix things so they don’t break down, preventitive maintenance. I am having starting problems and watched your video on that. From my aircraft mindset, to me it makes sense because mine has 240K on it, to replace everything from lift pump on and be good for another 200K. What are your thoughts?

[@quentonmillstid850]

Canada

[@ronniewilliz153]

I just picked up a 24v cummins. Any common things to look for its been sitting for like 2 years. New to diesel engines

[@rogerdevries8883]

Put an aftermarket lift pump and a fuel pressure gauge, make sure you always have good pressure so you know the vp44 is getting enough fuel to cool itself. And check to see if its a “53” block. If it is a 53 block, consider selling it.

[@chriskahlson]

Great tutorial

[@alastairwaters9114]

Would this be the same for a vp30?

[@francisstorry6753]

Hey frank at cayuga always watch 2 DE end can never get U2 work on my truck?

[@bartarkis]

"Nod if you've already quit watching." wink wink Comedy and mechanical advice.

[@stephenliviniuk7039]

Some things were missed in this video

[@bluebird5100]

Did my vp44 replacement and my rear mounting bracket was broken. I had no choice but to leave it off. Do I really need to source a new one or do some people not use them?

[@DEBOSSGARAGE]

You will crack your timing cover. Get a new mount or make one.

[@jdillon8360]

Agree with Rich. It's a heavy pump with a lot of force and vibration running through it. Most VP44s on most engines use a second bracket under or behind the pump, in addition to the flange mounting bolts/nuts. Not always visible from the top, get a mirror in there or feel around with your hands.

[@bradyarnold9209]

excellent!!! great video i just watched to learn. and yes all the way to the end.lol

[@OLDSOULTRUCKIN0313]

Couple questions man..i literally use your videos for everything i do on my cummins. But anyway are you saying that bad battery/ connections will make vp go bad or can cause that check engine code? Just a better understanding. And my other question is when i turn key on it takes about 10 sec or so for my wait to start light come on. Truck runs great. No CEL.