Engine Performance problem
1999 Chevy Blazer 6 cyl Four Wheel Drive Automatic 197000 miles
My 99 chevy blazer 4.3 v6 has been giving me trouble. I have a hard time getting it to start and when it does start it idles really low, stumbles and dies, unless I lightly push the gas pedal and the engine slowly revs up, but my rpm gage is not working. If I get it running long enough and put it in drive it kills. I had it scanned and the only code that comes up is p1351 Ignition Coil Control Circuit High Voltage, and I cant find a straight answer online so far.
I have replaced the starter, pick up coil, ignition module, rotor, plugs, plug wires, distributor cap, map sensor, air filter, fuel filter. I checked the entire engine for vacuum leaks and repaired the ones I found and cleaned and checked the pvc. I checked the egr system and its good. I checked the coil and its firing good and checked it with an ohmmeter. I checked the fuel pump and the fuel pressure and its good. I cleaned the air intake system and did an oil change. I had the catalytic converter checked and its good. My transmission is brand new only 1 year old and its good. My MAF sensor is good. The engine timing is correct and the timing on the distributor. I checked the wiring that I got from the diagram for that p1351 code and I cant find a problem.
So I would be very grateful for some answers. I wish I knew the answer. The only thing I can think of now is the PCM, cause a mechanic said he was so sure that my no start problem was coming from my computer, so he took mine off and went to the junk yard and put a used one on and this was before I had replaced anything or checked anything yet. I just got the security light to go off by doing the passcode thing the dealer told me to do and then it started but only after I replaced the ignition control module and cam sensor. But I think it funny how my rpm gage doesnt work anymore. And now I cant get my old pcm back, cause the guy scewed me. But it is the right pcm.
have the same problem?
Tuesday, March 24th, 2009 AT 1:17 PM