The complete automotive resource for buyers, sellers, and owners like you.
Car, Truck and SUV Forums at Roadfly
+ Bentley Forums
+ BMW Forums
+ Cadillac Forums
+ Chevrolet Forums
+ Ferrari Forums
+ Jaguar Forums
+ Lamborghini Forums
+ Lotus Forums
+ Mercedes-Benz Forums
+ Maserati Forums
+ MINI Forums
+ Porsche Forums
+ General Discussion
+ Marketplace Forums
No help here but... (archive)

[ Follow Ups ] [ E30 M3 Message Board ] [ Msg. Board FAQ ]

Posted by Jon on January 17, 2002 at 17:14:02:

In Reply to: air fuel ratio? posted by adam p on January 17, 2002 at 16:01:01:

I just got a new AFM...well remanufactured...and I still have the crappy rich running around idle but now I also have detonation and hesitation in the middle of the rpm range under medium to high engine loads. Crap!

Detonation is not good.

I went over my engine with a propane torch (unlit, of course) for like 20 minutes looking for vacuum leaks. I didn't find any.

I think I need to get a lamda gauge. Then I need to figure out WTF is going on.


I have been having some detonation and hessiation from my car in the last few days.. I have done alot of playing with the overall fuel ratio via the ecu but I dont know how to check to see if its all calabrated correctly under the hood? I checked the intake blocks and they seem ok.. so I am not sure what might be the deal.. I might have some fouled plugs or something like that but any help on adjusting air to fuel ratio would be awsome! Ahh and maybe some info on how to verify the .o2 is working?

Follow Ups:

[ Follow Ups ] [ E30 M3 Message Board ] [ Msg. Board FAQ ]
Questions, comments, or problems, please visit the Roadfly help desk. Logo © 1997 - 2018 Jump Internet Inc. All rights reserved.