TRUCK DOES NOT START UNLESS I WIDE OPEN THROTTLE...

1992 GMC Suburban

Tiny

ao43100

October, 27, 2012 AT 6:46 PM

Truck does not start unless I wide open throttle and has NO ALDL communication with the EDM

FOUND 50464 RELATED QUESTIONS

4 Answers

Tiny

JDL

October, 27, 2012 AT 6:55 PM

So you can't communicate with computer? Check engine light doesn't work? Maybe a bad bulb or wiring circuit. I've seen some vehicles where the check engine lite wouldn't work, but, a scanner would work to show live engine data. That might give you a clue? Wide open throttle should place it in, clear flood mode. You may have a fuel leak?

Tiny

ao43100

October, 27, 2012 AT 7:13 PM

Check engine light does work, it's ON. I tryed to communicate using Snap on scanner and jumping A & B termanals. No fuel leak extenally of at the TBI injectors.

Prior to the no start situation I had a lack of power (seemed like a restricted Cat) and no shift to high gear.

Tiny

ao43100

October, 27, 2012 AT 7:25 PM

Correction, I have NO "Check engine light at all.

Tiny

rasmataz

October, 28, 2012 AT 12:51 AM

Check and test the coolant temperature sensor and the throttle position sensor closed and WOT voltages-then let us know

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