1997-2000 4.0L Ford Ranger misfire code fix

How to find ignition misfires. May have codes p0300 p0301 p0302 p0303 p0304 p0305 p0306. 97 98 99 00
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[@tjr8063]

Worked on a LOT of 4.0s. Heads and valve seats have never been a issue with them. There biggest issues are intake seals.

[@tallfellaa5516]

Sound about right,sounds like mines.

[@tunnelportterror]

all you have to do, is connect an old fashioned bright TIMING LIGHT to the engine, and move the secondary pickup from wire to wire, and the light won't flash on the missing cylinder. then it's either coil pack, wire, or plug. simple.

[@busterbutcher5380]

Ĺĺ

[@josephmoore4598]

always check plug right after coil output. You can read plug and maybe point you in right direction.If pkug is wet and black could be bad plug {or burnt valve)If plug is dry look and listen to see if injector is ticking

[@josephkober3324]

Check camshaft position sensor at the passenger side rear of the engine. If it goes bad it will cause a misfire . it fires the fuel injectors.

[@pdsrenos]

Make sure your wearing your safety vest while your working with that HIGH voltage!

[@wattsobx]

i was going to change my sparkplugs wires and coil pack. You got me concerned about shocking myself. What in that procedure do I need to watch out for? I watched some other videos and its seems straight forward? I was going to disconnect the negative on the battery and start replacing?

[@RustBeltAuto]

Don't do any ignition work when the car is running. It could be a heart stopper.

[@wattsobx]

@@RustBeltAuto cool wasnt planning on it. was going to work with the car off and negative terminal disconnected.

[@barneywarwick1038]

i have a 93 Ford ranger it idles ruff some times and bogs down like it's lost all it's horsepower there is black carbon at the end of the top of my tale pipe on my truck there is a flashing white light at the end of the spark plug wire's would any one no what this could be

[@williamdonovan6941]

I have a 97’ 4.0 & I got a misfire code for cylinder 4 with a heavy shake from the engine. I had just done a tune up 5 months ago. I replaced the ignition coil pack & the code went away but the vehicle is still shaking a little more than it should. Should I consider replacing the fuel injector on that cylinder even if I’m not running a lean code?

[@RustBeltAuto]

Leakdown test. Possibly compression test. Thos engines are known for burning exhaust valves.

[@dziurdad53]

I have a 97 ford ranger. And when it shifts into 3rd gear it feels like it wants to stall. And it starts to kick then pick up speed again. What would cause that. I have replaced the fuel filter and done an oil change.

[@RustBeltAuto]

dziurdad53 No codes?

[@hillbillymitchswhitetailst6215]

Sounds like maf problem

[@redshogun9487]

If anyone might see this, I'd love to know how to take that throttle cable assembly off.

[@rhonnymarques6560]

oops tube friend because this truck has 2 oil dipsticks one on the left side near the egr and the other behind the ignition coil, this one behind the ignition coil I was curious, I'm from Brazil and I would like to know, thank you if you can inform me in advance, thank you for your attention.

[@RustBeltAuto]

One is probably for the transmission.

[@rhonnymarques6560]

Thank you for your attention, congratulations on your dedication and time to show your work

[@robhawkins6018]

are you from Minnesota

[@RustBeltAuto]

Gee... What gave it up?

[@finaldrivetv3669]

Need help randomly started misfiring on cylnder 1 threw a code p0301 new plugs, wires, coil pack still a misfire did that test of takeing the wire out of the coil pack and you can hear it sparking could it be bad plug?

[@RustBeltAuto]

Take out plug, and look for carbon tracking. They have valve issues once in a while too. Could be injector issue, but doubtful.

[@nicanorm1069]

I hace a Explorer Sport XLT 2003, in It misfire cilindre 4 change spark plug, wirless, injector wash in laboratory and misfire continuos you can help me ???

[@RustBeltAuto]

If you have a good spark all the way to the spark plug, and did an injector swap (moved injector to a different cylinder), and still have a #4 misfire, you might want to do a cylinder leakdown test. The 3.0L fords burn exhaust valves all the time. You may have an issue like that with your 4.0. That is the best advice I can give you.

[@nicanorm1069]

@@RustBeltAuto already in the cylinder number 4 have a problem leakdown test It is 80... Maybe now It is a big problema

[@RustBeltAuto]

@@nicanorm1069 If you are sure the valves are closed all the way, You have your answer. Those heads are easy for me to replace, and have sent a bunch to get a valve job, and resurface long before I ever did a KZbin video. By the way, you did a compression test, and not a leakdown test. Probably still the same result.

[@nicanorm1069]

@@RustBeltAuto compression test in my Explorer is 80 in the cylinder number four

[@brianlee9310]

Intakes need cleaned for sure sounds like. Also exhaust valves most common

[@barneywarwick1038]

having bad spark plug wire's can make your truck or carboraitor run tuff like idles ruff bogs down and carbon build up at the tail pipe could it be a bad o2 sensor

[@RustBeltAuto]

You will always get a little carbon in your tailpipe. especially if it is misfiring, or running rich. if it runs bad, there is probably a check engine light on. best to see what it is. if you think you have bad plug wires see if they look like this. kzbin.info/www/bejne/m17HeH-PpMmtbqM

[@jennyrobison6399]

96 Ford Explorer 4.0 # 2 cylinder misfire. I’ve changes plugs, wires. coil was fine so I left that. new o2 sensors has great compression at a stand still now

[@RustBeltAuto]

Might want to try an injector swap, and see if it goes to a different cylinder.

[@jennyrobison6399]

Thanks I’ll give it a go👍

[@alb12345672]

A bit late but I have money on a cracked head. Not uncommon. Try some K-seal in the coolant. It fixed mine. I had to run it with the plug out but it sealed. Runs fine now. I have a 96 too. Blow compressed air into the cyl at TDC and see if the coolant rises. Next is a replacement head (it can't be repaired).

[@kamryn7496]

My 2000 Mazda b4000 with the 4.0 ohv misfires on cold start for 15 seconds then go’s away just happens on cold starts what could that be?

[@RustBeltAuto]

Check your spark plugs. If they are really worn, they will work better when hot. Those things almost always need a valve job too. Best advice I can give you.

[@kamryn7496]

Rust Belt Auto I changed the plugs an ran some b12 in it an that seem to fix the issue but I noticed by the spark plug coil harness there’s a plug in red wire that disconnected an I don’t see a plug to plug it into it don’t show a check engine code

[@kamryn7496]

Rust Belt Auto at 12:37 at I’m talking about that red wire that plugs into that 1 black wire by its self that’s on the coil pack thing I’m missing that black wire plug in

[@RustBeltAuto]

@@kamryn7496 Capacitor suppressor for RF noise. If yours is missing, it would be a good idea to get one.

[@kamryn7496]

@@RustBeltAuto oh that's what it's called thanks I'll look in to it

[@dziurdad53]

Other then check engine light is on. But I'm not sure which code it is throwing.

[@RustBeltAuto]

dziurdad53 Go to a parts store that checks codes for free.

[@stewartrivers2730]

Can someone please let me know the routing from coil pack to cylinder 1998 b4000 v6 4.0 mazda

[@RustBeltAuto]

Can you google it?

[@bobbydavis8776]

How to fix the air bag light on 96 Ford when add fuses under hood blow fast thanks need help

[@RustBeltAuto]

You have a short to ground somewhere. My guess would be behind the drivers inner fender. But really, i dont know.

[@bobbydavis8776]

@@RustBeltAuto is there a plug behind there

[@bobbydavis8776]

Is there any video on it thanks

[@RustBeltAuto]

@@bobbydavis8776 no. But i found one once where the wires rubbed apart there. Its just a guess

[@bobbydavis8776]

Ok thanks big help

[@jessemartinez9317]

I haven't got my I haven't got my response from you so what is it

[@RustBeltAuto]

Are you talking to me? Your messages are all over the place, I do not understand them, and one of your messages, messaged yourself.

[@noonday8240]

I got shoked twice still breathing. Good ❤️

[@RustBeltAuto]

Spooky. After telling everyone not to do what I just did, they do it anyways.

[@jacobwestcott4536]

You hired by osha? Jesus

[@RustBeltAuto]

Osha doesn't hire workers. Jesus doesn't fix cars.

[@alb12345672]

I had rusted out valve covers on my 96 explorer and it had a factory sticker with a high voltage sign and a book, right by the coil. Maybe a skull and crossbones would be better :lol: I painted the new V/cs and put the sticker back on with RTV :lol:.

[@RustBeltAuto]

Put a German one on there I see on some Euro cars. Achtung hochspannung!!!!

[@alb12345672]

@@RustBeltAuto You know these engines are more German than BMW :lol:. Cologne V6. The replacement parts from ford still say made in Germany. The lower intake gasket I got had a recent date, guess there is a still a need.

[@jessemartinez9317]

Yes or they just because I'll be knocking and I don't want to start that one plug is out of it

[@jessemartinez9317]

Is a spark plug is broken in the motor will it keep it from a stay running and I do a lot of knocking

[@garybarron8138]

So you don't find the problem, you just start replacing parts until the problem goes away, hell l can do that until my money runs out. I'm guessing you don't call yourself a mecanic

[@RustBeltAuto]

I found the problem. It's fixed.

[@michaelbarton7897]

Check your gap on new plugs and I bet you money 9 times out of 10 your not correct gap

[@RustBeltAuto]

O.E. pugs are platinum. They are pre-gapped. If you get the correct ones, you do not under any circumstances gap those plugs. You take the chance of ruining the platinum. 9 times out of 10 doesn't work on a 6 cylinder either. Your math is all wrong.

[@michaelbarton7897]

@@RustBeltAuto yes I have been told that too but over 20 years in automotive mechanics is sufficient first hand knowledge for me to strongly disagree. You most certainly can gap platinum plugs but it does require something other than a typical spark plug gap tool. Yes they are easily damaged if you use the wrong tool......but that is true for just about anything you turn a wench on.

[@RustBeltAuto]

@@michaelbarton7897 the truck is fixed bro. 30 years of mechanicking, 13 ASE certifications, and reading literature from spark plug manufacturers tells me if the gap is wrong on a platinum, or uridium plug, either you have the wrong plug number, or you need to return it, and get a new one, because it has been dropped, or damaged somehow. Thanks for watching.

[@michaelbarton7897]

@@RustBeltAuto look guy I am not here to pick a fight or shit on your work cuz I see no fault in it at all I just disagree with a very small aspect because of what I have experienced hands on. There is no reason for a pissing contest over what you have hanging on your wall cuz you will find pretty much the same things here. I did not mean to disrespect you in any way I was only sharing my personal experience and I apologize if it was taken for anything other than that, your work and your walk through as far as I am concerned are spot on sir.