Engine stalls while driving?

Tiny
2CARPRO JACK
  • EXPERT
Clean the throttle bore around the throttle plate with a little carb spray. It will run a little rough at first but give it a little gas and it will clean out
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Tuesday, July 14th, 2020 AT 11:44 AM (Merged)
Tiny
MY NAME IS MATT
  • MEMBER
UPDATE:

Thanks for the tip. I haven't tried it yet, cuz I have no carb spray and no wheels at the moment.

This afternoon I tried to start it, it idled for a while and stalled. It would not start again, so I took the K&N filter off and cleaned it, took out the pcv valve and cleaned it. Replaced both and it wouldn't start. So I fired some ether and propane to the throttle body while cranking and it started. It would not idle, just took a long time to slowly stall. Next start we gave it some gas (1500 RPM) and held it there for a minute, tried letting off the gas to let it idle and it died again.

She's not running rough at all when it's started, it sounds great, it just won't idle now.

Whattya think?
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Tuesday, July 14th, 2020 AT 11:44 AM (Merged)
Tiny
MY NAME IS MATT
  • MEMBER
Today I reset the ECM and received no trouble codes.

So far, I have cleaned the IAC, Cleaned the TBI, tested the throttle body gasket for leaks (none), cleaned K&N air filter, checked the distributor cap and wires for moisture, etc.

The only thing left I can think of is timing, as in the past (a month or two ago, I got a trouble code 42-Ignition Control Module, this code has not reappeared since i've reset the ECM)

When running, the engine seems to now run a little rough, and when it reaches operating temperature it will stall, and refuse to restart unless starting fluid is used. After this, the engine WILL NOT IDLE, will only run if the throttle is opened.

How do I adjust the timing or should I try and solve trouble code 42, maybe replace the Ignition Control Module?

Thanks
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Tuesday, July 14th, 2020 AT 11:44 AM (Merged)
Tiny
MY NAME IS MATT
  • MEMBER
Problem solved!

Replaced Ignition Control Module.

Now works as per normal!

Thanks for help.
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Tuesday, July 14th, 2020 AT 11:44 AM (Merged)
Tiny
JOE3CLEAN
  • MEMBER
  • 1995 GMC YUKON
  • V8
  • 4WD
  • AUTOMATIC
  • 160,000 MILES
Dear Pro's,

I took the yukon our for a drive after changing the oil, and made a turn toward's the car wash when, the engine died.
RPM's dropped to zero, lost power steering, and brakes, could barely turn into a parking lot.
This happened before, but sometimes could get it started enough to get home, so then we changed the (rotor cap?) And then changed the (distributor)shaft, (it was a friend of my girlfriends, and she couldn't remember much of what was said) BUT didn't have any problems for months, now they are telling me it might be the alternator, but this doesn't sound right to me. I think they are taking ME for a ride. I think it may be electrical, because when she tried starting it, I saw fuel being squirted into the carbureator, and pouring a little fuel in there didn't help either, would the spark plug wires make it die like that? No sputtering?
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Tuesday, July 14th, 2020 AT 11:44 AM (Merged)
Tiny
PEAR69
  • EXPERT
Have the ignition module checked. What is the fuel pressure? How old is the fuel pump?

BTW - You do not have a carburator. You have a Throttle Body Fuel Injection system. A throttle body regulates air coming into the engine - NOT GAS. Pouring gas down a throttle body can cause a back fire in your face.
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Tuesday, July 14th, 2020 AT 11:44 AM (Merged)
Tiny
KASEKENNY
  • EXPERT
If you added fuel and it did not start then you most likely have an ignition issue. Pull a spark plug out and connect the wire then hold it against the block then crank the engine to see if there is spark. If not, then we need to chase that down. If there is, then we can revisit a fuel issue.

However, here is a guide that will help with this. Let's run through this and go from there.

https://www.2carpros.com/articles/car-cranks-but-wont-start

https://www.2carpros.com/articles/engine-stalls
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Tuesday, July 14th, 2020 AT 2:45 PM

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