3 codes - stalling/hesitation till 4k or lots of gas pedal
#1
3 codes - stalling/hesitation till 4k or lots of gas pedal
Ive got three codes 0303 0302 - which are both front o2 sensors and and EGR code 0503. The car hesitates / stalls and loses power from idle until about 4k or until I mash the gas pedel. This problem comes and goes. Sometimes it does it other times it runs just fine but over the past week it has gotten worse and worse.
I recently (within the last 5k miles) replaced both o2 sensors and I think my EGR needs to be cleaned to take care of that code. I did clear the codes and none of them have come back after 250 miles but the hesitation problem is still giving me problems.
I was thinking MAF or coilpacks. Any other ideas/suggestions?
I recently (within the last 5k miles) replaced both o2 sensors and I think my EGR needs to be cleaned to take care of that code. I did clear the codes and none of them have come back after 250 miles but the hesitation problem is still giving me problems.
I was thinking MAF or coilpacks. Any other ideas/suggestions?
#7
Okay. I cleared the codes and the front o2 sensor and 0503 egr code came back. All three front coilpacks tested at 1.6 or 1.5 ohms (I tested them when the car was hot). When I pulled the plug while the car was running it did effect the idle but didnt cut off. Any other ideas?
Ive got to get this running as I dont have my harness finished yet for the 3.5 swap.... arg
Ive got to get this running as I dont have my harness finished yet for the 3.5 swap.... arg
#9
Interested to see what u find here....ive got same hesitation issue without those codes. Ive replaced/swapped coils, plugs, ks n its harness , maf. Cleaned cam and crank pos n ref sensors. Tested both front o2 sensors and cleaned egr tube, iacv, tb n maf.....nothing has helped...im thinkin my crappy egay intake has a small leak, hence my wtb cai thread lol. Im gonna test my tps tonight n c what i come up with n if it matches urs.
#12
Alright Im at a loss here. Turns out my fuel injectors, coil packs and tps are all good. I tried going through each one and unplugging it. The "missing/hesitation" that I have is not that of a misfire. Its a total different sound/feel....not nearly as dramatic or apparent as when i directly unplugged an injector or a coilpack. My TPS was fine....it was my cheap multimeter that was faulty.
I did notice one thing though....I had to bleed my brakes today and as I had someone stepping on the brake pedal the idle and "hesitation" I have been having a problem with got worse as they were stepping on the brake pedal. My only conclusion to this is a vacuum leak because the only thing I can think of why this would effect the idle is the vacuum to the brake booster.
Any ideas?
I did notice one thing though....I had to bleed my brakes today and as I had someone stepping on the brake pedal the idle and "hesitation" I have been having a problem with got worse as they were stepping on the brake pedal. My only conclusion to this is a vacuum leak because the only thing I can think of why this would effect the idle is the vacuum to the brake booster.
Any ideas?
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