View Full Version : M50 bogging problems

09-15-2010, 07:57 PM

So my car is being weird. I went to get an emission test and it went 3 times the limit, it's running rich, I know that. Hc limit is 680, my car ran 2800.

Also, the odd time I goto start from a stop, the car bogs and hesitates, then after the RPM's get up it's fine, but still sleightly boggy.

I got a MAF code, I put a new one in and it's still doing it, I changed the Dinan ECU out and put a stock 403 in and it did nothing.

Is it possible for the car to be stuck in cold start? Coolant temp sensor, maybe IAT sensor? My other guess was the FPR.


Edit: Stomp test says 1444 (No code) also brand new car, brand new o2.

09-30-2010, 10:41 AM
Mine ahd the same issue i changed the maf sensor and did nothing to fix the issue, i had checked all the vac lines and i also changes the cam position sensor same issue didnt fix the problem, so i dug deeper and it was a broken wire in the maf sensor plug check yours out and see my car runs like a dream now

El Gato Liso
09-30-2010, 03:20 PM
sam my car is doing the exact same thing.

cold start it feels dumb until rpms are high. only solution i have is to a) drive wiht a heavy foot until its warm enough b)let it warm up

09-30-2010, 03:43 PM
Check your ignition system (coils, spark plugs).