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1989 Chevy Suburban engine flooding

Tiny
DAN BILODEAU
  • MEMBER
  • 1989 CHEVROLET SUBURBAN
  • V8
  • 2WD
  • AUTOMATIC
  • 88,000 MILES
I was refered to this site by a mechanic that I paid for on fixya. Com. This is my problem. I went to start my truck yesterday morning, it started and stalled and would not restart. After trouble shooting I found the engine flooded. As soon as I start to crank the injectors go full on and flood the engine. I changed the ignition module and still the same problem. I changed the ecm, the engine started and ran for 3 min. And the same problem. What I think I need to do is get a pinout so I can check from ign. Module to ecm and from ecm to injectors. What do you think?
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Monday, April 27th, 2009 AT 5:03 PM

3 Replies

Tiny
RACEFAN966
  • MECHANIC
  • 5,029 POSTS
I think you should buy a noid light from your local parts store and plug it into the intector harness and see what it is doing. These noid lights are not very expensive about 17 bucks for one for you truck. Follow the instructions that come with it and let me know what you find.
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Monday, April 27th, 2009 AT 7:36 PM
Tiny
DAN BILODEAU
  • MEMBER
  • 2 POSTS
Thanks. I found the problem it was a shorted coolant temp sensor.
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Tuesday, April 28th, 2009 AT 11:38 AM
Tiny
RACEFAN966
  • MECHANIC
  • 5,029 POSTS
Yep that can do it too. Glad you found it if you have any other questions just ask. Thanks and have a great day.
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Wednesday, April 29th, 2009 AT 10:22 AM

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