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After engine gets hot hard to start floods out

Tiny
GSTORMS61
  • MEMBER
  • 1988 CHEVROLET S-10
  • 4.3L
  • V6
  • 2WD
  • AUTOMATIC
  • 250,000 MILES
After engine gets hot while driving and later when I try to start the motor it just cranks over, unless I floor the pedal and then it has a serious rough idle. I can smell raw fuel and it feels like it is flooding out. I replaced the IAC fuel filter and it will run good for a bit then it is back to many problems.
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Sunday, April 14th, 2019 AT 6:18 PM

5 Replies

Tiny
MOTOR MASTER
  • MECHANIC
  • 279 POSTS
Hello my name is Dave.

It sounds like it's possibly a problem I have encountered in the past and that's the coolant sensor for the computer. You didn't mention if you have a MIL (check engine light) on, however I have seen quite a few GM products not turn the light on and still have a faulty sensor. If you have access to a scanner with live data I would recommend checking what the computer is being told the coolant temperature is by the sensor, if the temperature is reading considerably lower than would be expected at operating temperature (around 195 degrees) then that is the cause as it takes more fuel to run the lower the temperature. I hope this has been helpful and if there is anything else we can do to help we are always here and thank you for using 2CarPros.
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Monday, April 15th, 2019 AT 4:35 AM
Tiny
GSTORMS61
  • MEMBER
  • 3 POSTS
On my truck it only shows check gauges, no check engine light is the only thing the mechanic I used his scanner he says it's broke. His helpers don't know what they are doing. But I'll try to find someone with a scanner and knows what they are doing. Thanks for your input I hope what you suggest works.
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Monday, April 15th, 2019 AT 11:58 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 43,110 POSTS
I agree with Motor Master it sounds like the coolant sensor is causing this. here is a video to help walk you through the fix:

https://youtu.be/g4wRRxgjp94

Please run down this guide and report back.

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Friday, April 19th, 2019 AT 11:42 AM
Tiny
GSTORMS61
  • MEMBER
  • 3 POSTS
Your video helped me out the only thing is that my check engine light will not illuminate at all the only thing lights up is check gauges what gives.
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Saturday, April 20th, 2019 AT 4:26 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 43,110 POSTS
Hmm, lets run the codes and check the fuses. here are two guides to help us see whats going on:

https://www.2carpros.com/articles/buick-cadillac-chevy-gmc-oldsmobile-pontiac-gm-1983-1995-obd1-code-definitions-and-retrieval-method

and

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Please run down these guides and report back.
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Monday, April 22nd, 2019 AT 12:59 PM

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