Help us help you. By posting the year, make, model and engine near the beginning of your help request, followed by the symptoms (no start, high idle, misfire etc.) Along with any prevalent Diagnostic Trouble Codes, aka DTCs, other forum members will be able to help you get to a solution more quickly and easily!
My Neighbor has a 1995 GMC Sonoma with a 2.2L engine.
His check engine light came on when the engine started running really
rough and finally stopped running. Engine would try to start and then die.
The DLC is the OBDll style. When I connected my scan tool it said that it could not
connect to the vehicle. I looked at the pins in the DLC and there were only 4 pins.
Does anybody know what kind of diagnostic system is in this truck and what do I need to be
able to get to the PID's and the trouble codes?
Turned out the truck had a bad fuel pump.
Thanks for any help.
Dennis
the OBDII software that you're using came out in 1996. OBDI was from 1991 - 1995. An adapter is available to be able to scan an OBDI system with a OBDII scanner. OBDI was mostly for emissions control related diagnosis.
"an open mind let's knowledge flow in and wisdom flow out for a man who has neither never listens to those who have both".
Being wrong doesn't bother me, it's being right and not understanding why that does
Thanks for your reply.
OBDII has a 16 pin DLC and OBDI has 8 pins correct me if I'm wrong.
If you look inside the DLC it only has 4 pins and has the shape of an OBDII DLC.
If I can get an adaptor will I be able to get any PID's or just the trouble codes?
Thanks again,
Dennis
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