Chevy S10 - GMC S15 and Sonoma Oil Questions

c2cp

my oil gauge on my 93 s10 moves rapidly up and down at low rpm and when the clutch is engaged at first I thought the problem was in the gauge or sender unit but i noticed when this is happening the engine idles rough.When I first start it up or when I get moving its just fine.would anyone have a solution for this problem?thanks

chevyatw

Well i know that i have a bunch of stupid small problems, that are fiaxable, but annoying, and i know we all do. But to name a few, i can't get my passgenger side door to close like it should, its been slamed a few too many times and it doesn't want to close like it came out of the factory, haha. how can i fix this? another small problem is my dash lights a few behind the gauges are out and im not sure how to replace them. Its a 1992 s10 that i bought a few months ago from some people that didn't take the BEST care of it... but its something that drives

cgps

I just went through the door closing issue and found that the door hing pin bushings on my 1993 were shot. You can get a hing pin and bushing kit at your local auto parts store.

toby3jr

Judt bought my 96 s10 it has 245000 miles. When it starts it idles very rough (had to replace a motor mount) until it warms up then she idles and runs great. I have replaced teh throttle position sensor already. Any ideas??

hoodlatch

What kind of engine? When is the last time you tuned it up? 245K miles on the same engine is pretty good. My experience with a bad throttle position sensor has been regardless of temp when idling the engine speeds up, slows down, speeds up, slows down. Does the check engine light come on? Have you had the codes read?
Good luck.

gmgrl

I have a 99 S10 Xtreme, and up until now i havent had too many problems with my truck... the cat went on it when it was still under warranty thank god... but the other day it was -40 out and it was plugged in so she should have started but she never did.. put it in the garage let it thaw out and still didnt start.. when you turn your key, you can hear the fuel pump make noise, and now when you turn the key it doesnt make that noise, there is power.. i am assuming that it is the fuel pump, which is a pretty expensive part.. has any had any problem with there fuel pumps.. my truck has only 119,000 kms on it... that doesnt seem right to me that it would go that soon>>

toby3jr

toby3jr

Its the 4 cylinder and I put new wires and plugs in last week. Check Engine light has come on but the code reader at the local advance auto parts read and cleared the code but would not download the info to the computer to print out the problem. So I wait for the SES light to go on again

chevyatw

chevyatw

Well since i posted this i tried a number of things. But it wasn't the fuel pump. It was a carb sensor and temperature sensor that was shorted and the carb sensor just went nuts, haha. But i found out that this was the problem through diagnostic testing. When your check engine light comes on it should mean it has a diagnostic code stored. and if you had a diag. reader ( i wouldn't suggest buying one right away ) it figures it out for you. Can't live with the technology and can't live with out it... oh the irony, haha

joeinwi

I recently bought a 01 Sonoma 4x4 with 32K miles. It is using about 1 quart of oil per oil change (I now have 39K miles on it). I am getting conflicting stories that this is actually the norm for this vehicle but this doesn't "feel" right to me. Has anyone else had a similar experience? Also, is it normal for the steering to be very stiff at idle? THank you in advance for any insight to this issue. I love this little truck but am concerned about it with such low mileage.

joeinwi

hoodlatch

I have a 92 S-10 V6 with 210k miles that doesn't use any oil. Last fall however, I replaced the valve stem seals.

lwh9854

lwh9854

I have a 1994 s-10 2.2 L, manual trans, 2 wheel drive, AC, 184K. I have an oil leak and am having a difficult time determining the cause. Generally doesn't use much oil. Seems to only leak when driving (under pressure). It appears as if it is coming from the right side of the engine slightly behind and below the oil filter. It is really hard to determine the location, but it is near the DIS ignition modules. I understand the crankshaft sensor that works as a distributor is somewhere near the location. I do not know where the oil pressure sensor is located. At first glance it doesn't appear to be coming from the oil pan gasket, the valve cover gasket or the front or rear seal. It is also fairly clean around the oil filter. I don't believe there is an oil cooler on it (at least I couldn't find any hoses or anything near the oil filter or the radiator). Could it be a leak on the crankshaft sensor or oil pressure sensor? And where is the oil pressure sensor?

philscbx

See my Point now?
It Starts out an Oil Problem Question, and becomes a door hinge and dash light issue.

slkuhn

I need to replace the lower door hinge bushings on a 2001 S 10. Never done it! Any advise?
Thanks,
Steve

slkuhn

azbigdog

I have a 99 GMC Sonoma 2.2 L4 has 150,000 miles on it. My son was driving it and said engine has a funny sound and was smoking. I tried to start truck and after several tries, got it started. Went for a short drive. Seemed to run okay for a while. Then engine started to run rough and finally die. Got it re-started and limped home. Noticed low oil pressure (approx 20 psi) and when I finally parked smoke came from under hood. Smoke is coming from upper part of engine. I looked for an oil leak but compartment seems dry. Oil level is normal. Oil change is coming due soon so oil is normal color. Truck is used mostly as a commuter and has mostly highway miles on it. Anyone have a suggestion?

Al

gonogo

Check the oil pressure with test gauge, but I think the engine is gone.
My 99 runs 60 psi hot at 1500 rpm, rarely goes under 40 psi when idling hot.

azbigdog

Well, I did some more snooping around and discovered a crack in the upper part of the radiator. I replaced the radiator and coolant and then drove the truck. Something weird that happens is that the temp gauge will stay very low (approx 100 degrees) for the first 4 miles of driving then spike up to operating temperature then climb steadily to 235 degrees and above. (keep in mind it is 110 degrees outside) Also the oil pressure seems fine until the spike occurs then hovers around 40 psi while driving with drops to 20 psi at idle. I will replace the thermostat to see if this helps with the temp problem. The oil pressure issue has me a little worried. Is it possible to removed the oil pan for access to the oil pump without pull the engine out?

Thanks,

Al

gonogo

I have read it is easier to pull the engine. I have never pulled a pan on the Sonoma, but have with other vehicles by removing the mount bolts and jacking it up.

azbigdog

Well, no need to pull the pan, found out the block is cracked and thus a new engine is required. Anybody know what a new/rebuilt engine for a 99 GMC Sonoma 2.2 L4 runs?

Al :sick:

fstuter

I have a 1995 sonoma 5 speed manual shift 4.3 with 94,000 miles on it.My problem is that when it is cold it runs just fine but as soon as it warms up the oil pressure drops,but when i shift it goes back up untill i am in gear and driving it drops back down.The rpms are up the oil pressure goes up but in idle it drops down.This just started today so i don't want to keep guessing does anyone have any solution??

hoodlatch

It sounds like the oil pan has to come off to find the culprit. My neighbor had a similar problem with is 2000 4.3. Once we got the oil pan off we found it spun a rod bearing. Sometimes if routine maintenance isn't done the oil pump pick up screen gets clogged up. Sometimes the oil pump gets week. 94K miles is pretty low for a 1995. I would think the bearings are in pretty good shape if the engine hasn't been dogged out. Is it possible your oil-sending unit isn't lying to you? I just change out one on my kids Corsica. It had an aneurysm and was leaking oil very drastic. They’re inexpensive and not too hard to change out. I used a deep wall 15/16th. I would prefer to do that first before dropping the oil pan. In my neighbors case it was a 4.3 in a full size van and it wasn't any problem getting the pan off. On a Sonoma you'll probably have to loosen a few things and jack the engine up to get the clearance. Good luck.

bsedmundson

My 95 blazer oil press drops at idle 20-25 psi then at normal rpm 40-45 psi has over 200,000. try and install a gauge to see real engine press. other than that it all guess work

enzo14

i have a 00 sonoma 2.2 and when i start it the oil pressure shoots up almost to 80. theres 123k miles on it and when i come to a stop it comes down to about 40 but then goes back up when accelerating. i drove it today into town and for the first time it started shutting off a couple times at stop. the temp is normal. also when it shifts into 2nd when its cold it has a pretty noticeable kick.??? i checked the oil and its fine. also checked the tranny and is a little low.

gonogo

That sounds about right for a 4.3, the 4 cyl runs higher.

dfmartin

I have a 95 S10 2wd. It has a 2.2L 4 cylinder, 5 speed manual tranny. 141000 miles. This truck has been great to me, up until the last six months. Chasing several different problems (most of which are now solved) I had to replace the spark plugs and spark plug wires, a leaking fuel injector, the water pump, the alternator, the battery, and the catalytic converter. I currently have two problems with the truck. When driving, at idle I lose oil pressure. It isn't dropping completely, but low enough to set off a warning light (in the red part of the gauge). When on the freeway, or at a stop but revving, the oil pressure looks fine, but as soon as I push in the clutch the pressure drops. This problem only occurs when the engine warms up. I have added oil to it and it does have a small leak somewhere that I've not identified, but it has had this leak since I've owned it. It's a very slow leak. Additionally, only when the truck has sat for a few days, it misfires until it reaches operating temperature. It only misfires in gear under a load. If you push in the clutch or slip it into neutral and rev it, it does not misfire. Does anyone have any insight? I mostly concerned with the oil pressure, but any info on the misfire would be greatly appreciated.

gonogo

For oil pressure try a new sender unit, if no help, may need an oil pump or engine overhaul.
That engine works best with factory plugs, I know they are expensive.

dfmartin

I replaced the sending unit and my pressure is looking much better. Poor old girl has a quiet knock sometimes now. Looks like it's time to upgrade. Anyone want to buy a 95 S10 with 141K? Only $12,000.00 HAHA (kidding)

matterkel

I'm in the market for an s-10 pickup which I want to buy off of a private seller. Everything seems great except that the seller is telling me there is a slight oil leak. What could be the worst case scenario? I will have a few extra bucks to get the leak fixed, but if it's going to cost an arm and a leg, I'm not going to worry about it. I'm not friends with any mechanics, so taking somebody with me for a second opinion is hard at the moment.

hoodlatch

What year and what size engine. Is it automatic or stick shift?

kaos409

:mad: ok i have a 99 s10 2wd i just got the oil changed on july 16th everything was working fine. well today i was on my way home and i started to lose oil pressure i stoped and checked everything it looked fine w8ed 10 min and started up again it worked. after a couple of minutes back on the road my truck started to jerk so i pulled off again and let it idle oil pressure looked fine but when i went to put in gear and go oil prssure droped completly right now trucks sitting on my brothers tow truck andy idea on y my oil pressure keeps doing this

kaos409

ok i have a 99 s10 2wd and its a stick. i just got the oil changed on july 16th everything was working fine. well today i was on my way home and i started to lose oil pressure i stoped and checked everything it looked fine w8ed 10 min and started up again it worked. after a couple of minutes back on the road my truck started to jerk so i pulled off again and let it idle oil pressure looked fine but when i went to put in gear and go oil prssure droped completly right now trucks sitting on my brothers tow truck andy idea on y my oil pressure keeps doing this

gonogo

I would put a test mechanical gauge on it, see what it is doing. When losing oil pressure should hear valve lifters rattling.