- Tue Feb 22, 2022 12:05 am
#135286
Hey Everyone -
I have a 1990 S4 that was under Howard Wright's care and he did an awesome job with the engine and trans rebuild. Immediately before he had my car for 18 months, I did an intake refresh. So everything is new (including all ignition components, dampers/regulator, injectors, etc...)
Since I got it back, I've periodically had some strange re-starts when warm where the idle will hunt up and down. At one point, shortly after I got it back it stalled when cold starting routinely and continued that pattern.
Howard suggested I swap the MAFs with my 1988. Did that this weekend and I didn't experience any of the cold start issues and only one or two episodes of the hunting idle. I am starting to think that MAYBE I have an O2 sensor on it's way out and the better MAF helped compensate.
I replaced the 02 sensor about 30K miles/10 years ago. It was a generic one from 928Intl that you can essentially solder with the correct plug.
I'm inclined to replace the 02 sensor and go for a rebuilt MAF. I'm not throwing parts at it but I consider both wear parts and everything else is essentially new.
Thoughts?
I have a 1990 S4 that was under Howard Wright's care and he did an awesome job with the engine and trans rebuild. Immediately before he had my car for 18 months, I did an intake refresh. So everything is new (including all ignition components, dampers/regulator, injectors, etc...)
Since I got it back, I've periodically had some strange re-starts when warm where the idle will hunt up and down. At one point, shortly after I got it back it stalled when cold starting routinely and continued that pattern.
Howard suggested I swap the MAFs with my 1988. Did that this weekend and I didn't experience any of the cold start issues and only one or two episodes of the hunting idle. I am starting to think that MAYBE I have an O2 sensor on it's way out and the better MAF helped compensate.
I replaced the 02 sensor about 30K miles/10 years ago. It was a generic one from 928Intl that you can essentially solder with the correct plug.
I'm inclined to replace the 02 sensor and go for a rebuilt MAF. I'm not throwing parts at it but I consider both wear parts and everything else is essentially new.
Thoughts?