Quote:
Originally Posted by skizzik
Ya when I replaced my fuel pump last weekend I hoped it would fix the stalling problem but it didn't. I just tried getting codes from the ECM but I get no flashing engine light at all when I jump A&B. I just get a single clicking noise, which I'm guessing means I've grounded correctly. I'm guessing this means the diagnostics circuitry of the ECM isn't working properly.
Any idea what else I could try? I'm thinking about replacing the O2 sensor since it's cheap and I know it could affect my fuel/air mixture. What do you think? I've been trying to find it on my truck but I can't find it.
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Ok, let's start over,
Check engine light working? verify with key on run for a bulb check.
If working , try and get any codes if available.
If check engine light is on while its running , you will have to fix that problem FIRST.
Its stalling when? after it warms up?
If it runs ok in "Open Loop" while cold it probably something minor
If its running crappy all the time , It could be something more simple like the "EGR" valve is not seated or sticking open. This will cause stalling and surging.
With the air cleaner off , a working "TBI" will sound like a huge vacum leak as its controling the idle speed, Does your's sound like this?
check all these things and repost what you find....
Desert
PS: here is a link to make sure you are jumping the right terminals
http://www.troublecodes.net/GM/