Computer is supposedly bad

[LEBROND]

So after 38 days of being in the shop I got my truck back I swapped/changed the motor,heads,injectors,gaskets,you name it...The mechanic tells me everything did yada yada yada,and that he cant find anything mechanically wrong with truck but that he had a GM Tech scan it and supposedly my computer is bad at times it misses when idled or stopped at a light but other than that it run great and no check engine is on either possible dead bulb so I need some help do buy the computer and take it to the dealer and get it programmed or do I hit up a junk yard and do what from there


Sorry, One more thing is it necessary to run AC Delco Platinums vs Regular AC Delco rapidfires

 

[SunlitComet]

platinum should be used. That have a single center electrode and single ground electrode.

Have you done a fuel pressure test while driving?

 

[LEBROND]

fuel pressure is cool driving...at idle and low speed is the problem im scared that im going to have another cylinder problem if i keep driving but at the same time I dont wanna blow 200+ dollars and the computer really isn't the problem so im at a stand still ..he said computer but how do I really know

 

[SunlitComet]

I would then your harnesses a good wiggle to see if you have a broken wire.

 

[LEBROND]

I would then your harnesses a good wiggle to see if you have a broken wire.

the mechanic said that the wires that were in bad shape were soldered back together...I went to autozone and oreilys and got a scan0155 and P0303.So is the computer really bad?And there are not AC delco Platinums in my truck so thats going to be another issue I guess

 

[Diller]

Sorry, One more thing is it necessary to run AC Delco Platinums vs Regular AC Delco rapidfires

Rapidfires = JUNK!


Take it from a GM parts guy!

 

[SunlitComet]

replace your right cylinder bank forward O2 sensor if it has 12v heater power at the connector pink wire with key in on position and have cylinder 3 inspected for a bad wire, plug or something because it is misfiring. have a back-pressure test performed at a muffler shop.

 

[LEBROND]

this is beginning to be a headache I changed the plugs,Cap,Rotor and nothing has changed damn it what else could it be!!!! I swapped ecm's w/the same number and it wouldnt start just keep getting to a dead end

 

[LEBROND]

bump

 

[SunlitComet]

if no compression issue then an injector fault maybe.

 

[ande6009]

Hate to dig up old thread, but did u ever get it fixed?