1993 Chevy S10 2.8l Stalls at Idle
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- Опубликовано: 5 окт 2024
- 93 S-10 has taken a turn again. Stalls at idle and coast. Found the idle control valve to be gummed up and a bad connector. Still runs like garbage. On to the EGR and throttle body gasket.
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I just bought a 1991 S10 with the 2.8l . Wouldn't start, but would run good for 2-3 seconds on starting fluid. So fire is good, fuel delivery Not good. Ended up finding no power to fuel pump. No Oil Pressure switch on Oil filter housing. Wires to it totally missing. Ran a switch wire off of fuse box to pump. Had power and still no fuel. Took out fuel pump. Hose between pump and hard fuel pipe Desenegrated. Bought a new fuel pump. Got it started, yeah. Tuneup next day, Plugs, wires, cap, rotor and Coil. Helped but not perfect enough. Have two new injectors coming in today. We will see. Iron girl , just replace remaining items, if everything else is changed out. Trucks this old need new parts. Cheaper than bringing it in. But sometimes, it is best, so you do not go nuts over it.
So my 89 2.8 sat for 4 years. I did everything you did finally gave up and took it to a shop they had it for over 2 months. They finally figured out the my ecu was bad the ordered a new one and now it runs great.
I think you meant the ECM(Electronic Control Module). Located under the dash. But, if you replace this with a new one , you have to take the PROM(Programmable Read Only Memory) chip out of your old ECM and install it in your new one. The PROM is vehicle specific while the ECM is not. Chapter 6 section 4 in a Haynes Manual will walk you through this process if you decide to go that route. Good luck🙂
@@allanlenz3795 yes I believe you are correct. It makes more sense the way you put it.
@@stevenzamarripa Thank you!!👍
I have one that I pulled as a backup. Might give it a go before I pull the bed to get to the fuel pump…again.
@@oldirongirl let us know if it works.
doesnt have O2 sensor lol. uh yep it does. First ones in 1986 were on drivers side exhaust pipe. Later ones were past the Y pipe.
Put the air cleaner back on and started up and get a water hose reel low and put water around the throttle body and around the hoses you will find the leak
Good luck! I have one and haven't played search the monkey on it yet! I'll be waiting
I'll tell you what's wrong with you. I got in 1993 series. Send the same thing. Is the sensor inside the distributor cap? As a little piece in there, it goes bad once a year and all of them. Check it, put a new one in there. And then you won't have no more problems. With it period try it out at work.
I'm having the same issue so you just gave ideas to where to look
Good luck. It seems like the problem can be hiding anywhere. I’ll keep everyone posted as things progress.
Any new information yet ?@@oldirongirl
I have a 91 and my would run like crap I removed the cat converter and it was plugged
And removed and straight piped it and replaced my map sensor and replaced All my vacuum line with rubber and don’t stall and runs a lot smother
I am having the exact same issues!!!
Ive never had that issue with my 91.But i notice the 93s have these issues alot more.
Major vacuum leaks will cause a stall at idle be cause the ecm will close off the Idle Air Control to close to where it should be
Check your vacuum hoses, that fixed mine.
Check EGR valve with vacuum gauge be sure the port is clean with carburetor cleaner
Just did the egr and cleaned up everything. Still same “new” issue.
that would be the icm acting up
Any chance you know the part number for ac delco fuel injectors or any you recommend. I got the same engine ✊🏼
Its Ohio salt state. YOur using ordinary crimp butt connectors, while those are fine for inside the cab, they dont provide protection from the salt elements.........Use crimp and seal butt connectors in engine compartment so you wont be redoing the corroded connections later....
you have to clear codes after every attemted repair or the car won tadjust to new situation...continue running bad.
Could you post the vacuum diagram?
I have a 93 doin same crap did you cahnge your computer an did it help it any or figure out what it was
I changed the computer but still didn’t resolve it. Went back to basics and the cap and button were burnt, so changed those out. Still same junk, so changed the ignition control module and it cleared up. I think one of the harness plugs worked it’s way loss but couldn’t tell you for sure since I didn’t pay that close attention when I was changing out the module. Good luck with your’s.
Did you figure it out?
I have same problem as she does. And I have basically done exactly what she has done. I am waiting for her to fix it too. Mine is sitting in the driveway until she does. Bummed out.
Tps are know for that
Creo que los cables de la valvula iac estan mal conectados.
It does have one o2 sensor right on the manifold.
If factory, they moved the O2 sensor from manifold pipe to past the Y part of the pipe.........unless somehow somebody deleted the O2 sensor. Deleted O2 sensor will turn on the engine light and make it run in open loop.
Can you plz tell the the firing order?
The front left plug is 1. The front right is 2.
What’s the line between the gas lines? Where does it go?
Engine module chip. In top of distributior
what device do you use for the codes? thanks.
INNOVA 3123 GM OBD1 Code Reader. You can get it off Amazon for $27. Some of the local auto parts stores will have them as well. It will not read the OBD2 Chevys. So confirm which connector you have. Thanks for the question. 👍🏻
@@oldirongirl thank you so much for your quick reply. i appreciate it!
Paper clip in the port and the check light flashes
Very helpful video I have a 91 2.8 V6 and I can't find a scanner tool, but is very helpful to know about the code reader, I was trying to put a paper clip but doesn't work, and I don't really want leave my truck, regards everybody from Mexico
Check your timeing
Check valve
have you tried the ignition pick up or ignition module?
Yep, good suggestion. Done a lot with it just chasing gremlins now. About to throw water on it and see if they turn into evil gremlins that I can find easily. 🤣
@@oldirongirl clever 😂 have you tried testing the fuel pump relay or the connector itself?
Talk to much
WhooHooo
I had to make it not kid friendly. Lol What the what?!?!?
@@oldirongirl good deal,, I'm interested in this. Mine is an '88 2.8, it's always bumbled 'n stumbled & intermittenly died right off idle. I've had it about 6 years and played the "throw money at it game". I hate sensors. It still does it. I bought a HEI distributor and two barrel carburetor but haven't had time to switch it all out yet.