Good news and bad news. Took it out for a drive. Runs like ****. Like a misfire/vac leak. I took it two miles down the road and I looked down and noticed my drivers side rear cat was glowing red. I have codes P0232 and P1151.
Buddy of mine says vac leak on drivers side. I guess I'll search in the morning
4.2L V6 - M5OD | SCT XCal 3 @ JawsRacing | K&N Series-77 | 16" Dual Efans | Magnaflow High-Flows
50W 5000K FX-R Projectors | Philips LumiLED Taillights | 60" Plasmaglow Fire & Ice | 2" Drop Shackles
I can't figure this out. I'm stumped.
4.2L V6 - M5OD | SCT XCal 3 @ JawsRacing | K&N Series-77 | 16" Dual Efans | Magnaflow High-Flows
50W 5000K FX-R Projectors | Philips LumiLED Taillights | 60" Plasmaglow Fire & Ice | 2" Drop Shackles
The fact that the drivers can is glowing red indicates a severe misfire.. The cat is most likely filling with raw fuel and over heating. A vacuum leak to Mr just don't make sense. That would indicate a lean condition which wouldn't cause this. How old are the cats? Perhaps you have an exhaust restriction on that bank. Try removing the cats and drive it a couple miles. See if it runs better
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On second thought.... Have you checked the fuel pressure regulator? Excessive fuel pressure could cause it... Or egr valve failure... That fact that its running like crap kina takes out the electrical side to me...
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Sorry for multiple posts... I'm reading the history of this post.... Could possibly be the ecm...
... What are you a mad scientist? Lmao Joe! That could be what we call him! I thought the professor knew the most about motors on here but it seems you know just as much if not more ( no offense Alex! You still are the smartest person I've seen )
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I think we r all blessed to have both of them. Everybody asks for help once in awhile. I'm glad someone has the knowledge to help
As for the mad scientist. It's very fitting
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I wouldn't mind having either one of them over my should on a few dyno runs that's fer sure!
Cat glowing ? Sounds like a bad cat. U can check engine vacuum at high idle if vacuum is low suspect exhaust restriction. Usually when i see a glowing cat it's done
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The p0232 would be an open in the secondary fuel circuit. Check power to and out of the IFS. And down at the pump if you do have power out of the IFS.
I disconnected the pump reset switch by the pax kickboard to test the fuel rail, so the P0232 could be from me manually disconnecting it. The cats are 2 year old Magnaflow models. I tried running it last night, it does not want to start. It will turn over several times and STOP like its hydrolocked. Could be from fuel. But I did manage to get it running and when it stalled, I still heard the mulittude of "clicking" noises, which I want to say were the injectors opening after the engine was off. The mis-labeled FPR would explain the vac leak, excess fuel, and glowing cat.
Now that I think of it, the fuel pressure regulator, I did not label the vac line going to it, so I could have accidentally swapped it. Does anyone have a picture of what color vac line goes to the FPR on a 4.2L?
Last edited by Raptor05121; 08-22-2014 at 07:35 AM.
4.2L V6 - M5OD | SCT XCal 3 @ JawsRacing | K&N Series-77 | 16" Dual Efans | Magnaflow High-Flows
50W 5000K FX-R Projectors | Philips LumiLED Taillights | 60" Plasmaglow Fire & Ice | 2" Drop Shackles