1999 Chevy S-10 4x4 4.3L Water Pump Change

[@Turbo231]

If this video helped you out or you really enjoyed it, feel free to buy me a coffee at: www.buymeacoffee.com/turbo231

[@davidg9167]

This video help me to replace the water pump on my 1997 K1500 4.3. Not quite the same but close enough. One whack (or two) on the fan nut didn't do it for me. I kept at it for 5 minutes and grabbed the belt to help it stop moving but finally got it. The hardest part was getting the bolts started on the replacement pump, it's tight and down low on the 4.3. TYVM.

[@ChevyBigAl]

Very helpful, I am in the UKL and have a right hand drive export model which developed a water pump leak. I thought at first I would have trouble getting shoud off because of Air Con pile but I just gently tweeked it out the way no proble nor was removing the fan, I didnt have the right spanner so I clamped a pair of mole (vice) grips on to the flange and a couple of sharp taps with a hammer and it was off. Thanks for posting/

[@jeffinpickering]

Good video; nice work. Add: bolts should be checked/re-tightened once warmed up to temp. One other thing folks may find is that the system may have to be burped more than once to get all the air out; a good idea is to get the passenger front higher than the driver's front when burping.

[@NRP1991]

GREAT how to videos, some of the best on here by far!!! 5 Stars!!!! keep them coming

[@kolbpilot]

Nice info video. I have yet to tackle this project, I'm pretty sure my 209k water pump is original, but no leaks. I too, thought about removing the fan, still there for the time being. My question though is, what kind of pulley is that in place of your A/C compressor pulley? The A/C on mine is no longer either, but I kept the compressor in place for the sake of the belt.

[@Turbo231]

@kolbpilot I would do the auxiliary fan...they can be had for about 100 bucks, you'd only need a manual on/off switch if you are pretty much the only driver, but mechanical fans are loud and annoying. This truck is an eastern seaboard truck and did fine, but with no AC and not a lot of hot city driving, it was no issue. My 1991 S-10 2.8 also had the fan removed, but it had AC and I used a cheap fan to pull air across the condenser, it was more then enough.

[@memoryofpops]

Thank you very much. Extremely helpful. You made it look a lot easier than it was, but nonetheless, your video gave me the key info that I needed.

[@thekeykeeper2009]

I had to do that on my 4.3 V6 a couple years ago! Great running engine!

[@Turbo231]

@c1rca121 Not yet...have one in the Caprice now, but not for the truck. Access to the freeze plug is crazy awful...will probably sacrifice a line water heater first and see if I can escape with that before attempting to do a block one. I have purchased it, but man, it's hard access.

[@alvinomelgoza2887]

Thanks for making this great video,you did a great job!

[@FixingCrappyCars]

thanks for the videos man, hope you're liking Alberta.

[@Turbo231]

Its ok. I had it on my previous car and my father has it on his 2000 S-10. Does it add anything? Not really, maybe a bit louder at WOT. It does tend to soil the MAF sensor, I generally have to clean the sensor every year.

[@Turbo231]

@kolbpilot Not sure...my truck never came with AC, so its just the factory idler pulley.

[@kinch40]

Nice job bro, I got the same problem, but I dont have a garage so I will be freezing as im doing this.

[@spelunkerd]

I hope you like Alberta, Ben. I live in Lethbridge. If you live in Calgary you'll want that fan to keep the engine cool in city traffic. Summers at high latitude have long days, but here on the prairies we get our share of hot days as well. What's your day job?

[@slbl88]

thanks for all your vids, i have learned so much from you !

[@gabekx60the2nd]

I agree, trying to hold the pulley and breaking loose that big 36mm fan nut is going to take a miracle

[@TeDuaMalakie]

@FergusAndRex , you're welcome! Do you mean that black plastic square installed on Aluminum heat disperser?! just right next to the ignition coil ?!! i'll be so grateful if you be more specific ! thank you .

[@x-man5056]

very good. well planed process and used thread sealant and anti-seize too. why not use a funnel?

[@Turbo231]

@Veikra Agreed. Got tired of it sounding like a 747 sitting on the tarmac on a cold winter day.

[@ownerbuilderpools]

You cut out the hardest part??? Keeping the pulley from spinning to enable the bolts to be removed.

[@Turbo231]

@kolbpilot A bit of gas mileage and a bit of power...all that fan power goes to the drive train. You can do what you want, the fan will never wear out, they very seldom do. You'll find that even without a fan your truck really won't go over 170 if at all. Pretty much the only time it will is on a hot day with no breeze just idling. Any movement of air will cool the truck, even nose into the wind.

[@Turbo231]

Impact it off bluntly with a wrench and hammer if you can't take it off smoothly. Its just a nut/bolt issue. I didn't include it as I removed mine long ago.

[@Turbo231]

Impact is the way to go...a quick jerk or hit with a hammer will bust it free. Be sure to do it with the belt ON...to help with resistance.

[@Turbo231]

@ownerbuilderpools Its not hard at all, just position yourself correctly and the drag of the belt will hold the pulley from spinning.

[@Turbo231]

@TeDuaMalakie Kinda...I mean, nothing really seat of your pants feel, but of course, power not used to turn the fan heads to the rear wheels. We do it to all RWD cars we have...traditionally we put in an electric fan, but given the lack of AC, this didn't need one.

[@Turbo231]

@spelunkerd I'm about an hour east of Red Deer in a pretty rural area. If I lived in the City, I'd agree with you, but any air movement, even when 30c (90F) will keep that truck cool but your right being stuck in traffic. Currently a museum curator, I'm moving back to my roots as a mechanical engineer in the oil fields/power industry.

[@kolbpilot]

@Turbo231 If I ever did it, it would be to see if there would be a gas mileage improvement ? I'm guessing 1 mpg at best. The fan is noisy when the clutch is disengaged. But I figure for now, since the fan has lasted all those miles so far, who am I to disconnect it ? I don't know how accurate my water temp gauge is, but it sits at 170 steadily for normal operating temperature. I know the gauge goes higher for it will almost hit 200 before the thermostat opens & the gauge rapidly recedes.

[@Cuatrostudent]

Hi nice video. I have a 98 chevy blazer, and its leaking water I belive from the water pump. is it the save procedure? thanks for any suggestion you can give. Thanks Vic

[@satelng]

can you see the seepage hole with the fan shroud in place? I have a fan on my S-10...would I be able to see this? I think mine is going out and think it might tell me what I need to know

[@Turbo231]

Make sure the system has no air bubbles impeding flow, make sure your system didn't kick up some debris that slowed down the radiator, make sure everything is somewhat clean on the outside too. There should be plenty of cooling capacity on the S-10.

[@Turbo231]

@TeDuaMalakie Oops...answered that from my other account. Standing in front of the truck looking at the engine, notice that cable that runs over the alternator to a round thing that looks like a soda can on it's right, between the alternator and the place where my AC compressor would be...that's the EGR motor. You can take it out and clean it, that may help you.

[@kolbpilot]

@spelunkerd I guess I'll leave mine on then. I live on the eastern seaboard, high temps with humidity. I figured it would start to over heat with no fan when creeping through intersections in a city. Only other option would be an auxiliary electric fan.

[@rounddancefan1]

I have a 2000 bravado same motor 4.3L Vortec, I just bought it, well everything was ok, we recently went threw a car wash & ever since the belt has been noisy, I replaced a idler pully top pully, but still it is so noisy, the sound seems to be coming from the A/C pump, the belt looks fairly new,, we also took the belt off and started it with the belt off, it was ok, but soon as the belt went back on, it start making noise, also once in awhile we smell coolant inside the bravada and hear water slushing around inside the dash. thinking about replacing the water pump & taking off the A/C unit & put a idler pully the way your is set up. Oh also thinking about replacing heater core.

[@rickygroves8103]

we just put on a new water pump and put everything back the way it was but its now over heating and i checked the oil and it was fine, so its not linking to the oil, what could be some problems?

[@tonypina6094]

thank you for the video it helped men a lot easier

[@jovanlopez90]

good job . question your turck dont overheat with out the fan?

[@Turbo231]

Yes, the pump leaks when it wears out. Same procedure.

[@bryanmartineau4952]

I have a 2002 chevy s10 4.3 liter. Is this pretty much the same layout? Im not too familiar with mechanic work, but I do have access to all the tools. Following this guide, do you think I should fix it myself?

[@Turbo231]

No...I'd check the radiator for buildup first. If you have a new thermostat and your car is hot, that means that the cooling system isn't working hard enough to cool the hot water, check that first. If a water pump is turning, it's probably working.

[@TeDuaMalakie]

hello, i would like to see if you know where both the knock sensor and EGR sensor are located in your car !as long as i have the same engine of yours in my 98 blazer but i'm really having hard times to locate where those 2 sensors are really hiding . thank you .

[@Turbo231]

Should be about an hour if you take your time. It probably took me longer, but setting up the camera and such takes quite a bit of time. If you just go right at it, it's not that bad.

[@FireEater]

Short and sweet. Thanks

[@TeDuaMalakie]

Thank you very much for this very beneficial video,i have a question,Did you notice any increase in your car power after you had your fan taken !?! i know you did it bc you live in a cold area but some people do it to get some power add to their engines. thank you again and btw i do not like Dex-Cool either !

[@KIDDGaming_]

So I see video is only 10 minuets long. How long did this actually take? From start to finish, hood up to hood down?

[@Turbo231]

@chevy5030 It will be fine...the original one didn't rust out.

[@JonathanThompson1320]

Thank you Ben!

[@c1rca121]

does your blazer have a engine heater? cuz your going to need one in alberta

[@Turbo231]

No. The climate in Maine is cool...aka never really above 90F/30C. I also live in a very rural section, so stop and go traffic is minimal. The 4.3 runs pretty cool, the cooling system is rather large never have I had this truck ever go above 210. My 1991 with a 2.8L had the same deal, I had to let her sit once, the heater core was able to cool it down enough. That truck had AC, but I only ran it when she was moving.

[@vicpnut1]

Thanks for making a succinct no unnecessary bs video , proving to me it's as easy as I thought ( or hoped ) it would be. ...and owning a2003 s10 I can understand the idea of not needing a fan......the temp seems to ride very steadily at or around 200 no matter what time of year , or even up until just about all my coolant leaked out.......but i dont know the benefit for it being gone?

[@Turbo231]

True...however the stuff in the video is "mixes with anything".

[@ricardomaestre3236]

Excelente trabajo aprendiendo algo gracias thanks

[@johnsont963]

how do you like the K&N air filter?

[@RejectedManiac]

What type of sealant did you use on the bolts etc?

[@Turbo231]

Fans are the last link in cooling your truck. Depending on climate and how you drive, you totally don't need them at all. If its hot and you're stuck in traffic, then yes...or use AC.

[@mikevmpr3]

i have a fan attached and am having problems removing it. what do i do?

[@purpledoge4466]

What size socket did you used for the waterpump bolts and the pulley? And what gasket market did you used to hold thr waterpump gasket and the bolts together?

[@Turbo231]

That was a long time ago, if not on the video I don’t remember.

[@CaddyRich]

How dose your truck not overheat with out a fan?

[@mojaveclimber]

No fan clutch???

[@kolbpilot]

Well now I know what an A/C less 4.3 looks like. Removed my fan, no difference in winter overheating wise, in fact blocked the radiator 80% to enhance water temperature. Picked up maybe 1 to 2 mpg. Now that the weather is rapidly approaching 80 degrees the plexi-glass used to block the radiator has to come out, runs around 210 & higher when idling.

[@Ryearthvl7983]

I don't think the fan is only for air conditioner, it helps to keep the water temperature of the engine, that's probably why the water pump went out

[@Turbo231]

Technically true. The radiator needs air to go across it to displace heat. That being said, the system is also large enough that it can go some time, especially in cooler climates, without needing air to cross it. Trucks without AC in colder climates don't really need a fan. Now, if you have AC, the condenser for sure needs a fan, but this truck does not. As for hot water temperatures causing water pump failure...um...no. This water pump never dealt with temperatures over normal rated.

[@Turbo231]

Spray some thread lubricant and figure out a way to keep that pulley from moving.

[@ducklandwikeno]

My radiator on my 1997 chevy blazer was hell to turn , but you can get it out .

[@Titliest07]

good video as always Mr. T hahahahaha. 5 stars!

[@blazinloud]

great video, thanks

[@Shockern003]

how long did this take you?

[@Turbo231]

I removed it. I lived in a cool climate, didn't have HVAC, and was in a rural area, a fan was waste of energy.

[@fontalvod]

Nasty hit your radiator core took there when pulling out the water pump!

[@Turbo231]

Something from Napa, no doubt high temperature.

[@FixingCrappyCars]

why do you keep your fan shroud if you deleted your fan?

[@jephphry]

it secures the radiator

[@Turbo231]

Probably 2 hours...hard to say, never did it before and shooting video while working takes up a lot of time.

[@mattzadworny]

I bought my chevy S10 4.3L in September, I flushed most of the cooling system ( I still can see some flakes in radiator and reservoir) last Friday because heating didn't work. Since I guess two days I saw a leak from under my car, so today I layed down under truck and it seems like gasket or the part you mentioned leaks. I can see large spot of antifreeze under my car. However can anyone explain to me how is that possible? Did I washed out something or what? And do I have to replace water pump or can I just pour some treatment product ? and I'm using DexCool that's probably the reason of flakes

[@JodBronson]

2 Things can go wrong... 1 Gasket, 2 the Bearing :((((

[@Turbo231]

Yes...and they aren't even nuts...they're bolts. Oh well. Nugget for the "best of" videos. :p

[@BryanJSmith]

Thanks!

[@Turbo231]

No idea and if its a new sound, probably about 1100 bucks.

[@ducklandwikeno]

Oh I meant the raditaitor dran plug.

[@TeDuaMalakie]

@Turbo231 paused this video on 1:31 ,right there ..i know what u talking about ! apparently we have slightly different engines, mine does not have anything right there except the thermostat hose,i do not even have any device looks like that installed on my engine. my engine is 4.3 vortec 4X4 , its weird tho.. . anyway thank you , i have annoyed you enough so far ! :-)

[@Turbo231]

I removed the fan years ago on this truck. The fan and clutch are one piece, not exactly rocket science to remove.

[@AgnarBurnsAll]

i despise factory clamps with a passion!.

[@mikevmpr3]

thanks :D

[@benekaiwi1]

No my s10 is a bit newer than yours. My s10 is a 2003 zr2. You need a special tool to remove the fan.

[@rickysharpe603]

Radiator could have a leak. Hoses could not be securely placed.

[@Turbo231]

It is identical and yes, you can, it's not rocket science.

[@garydubois667]

Nice video except YOU DONT TELL HOW TO GET THE DAMN FAN OFF! WHICH IS STEP NUMBER 3

[@benekaiwi1]

Wtf. Fan shroud to water pump? You skipped the fan clutch and fan removal. Not very helpful eh.