Yes it is a gas engine. The 1988 has a throttle body injector so it is considered fuel injection. So has twin injectors into a carb. I have never worked on this kind of set up. Can you tell I'm just a novice mechanic.
I was reading my Haynes repair manual and they mention Model 220 TBI is controlled by the Electronic Control Module (ECM), it monitors engine performance and adjusts the fuel/air mixture accordingly during all engine operating conditions.
This ECM is rather expensive and I don't have the cash to just start replacing components. My thought is that it is not sensing the cold conditions and therefore not making the appropriate fuel/air adjustments, or it is sensing the correct temp but the ECM is defective and thus not making the proper adjustments.
In this system is the:
Engine Coolant Temperature (ECT) sensor
Intake Air Temp(IAT) sensor
Throttle Position Sensor (TPS)
The person I bought the truck from said he had it checked out but it never had a code, I am starting to wonder.
I called him the other day and asked about the ECM and he said "Oh, that thing you have to go through the clovebox to change, no I never did that." See I bought this truck in the summer and am just now having trouble.
The oil pressure is dead up at 30 when started but the guages don't read while cranking.
OK probably too much info.
Thanks for helping,
Friday, November 16th, 2007 AT 10:49 PM