Hi there, just got myself a 98 turbo 2000 and I've had my engine check light flash on a couple of times.
Have done the black connector thing with the check engine code light and it came up with 4 codes: 22, 23, 24 and 31.

Car has had a few bit s done and I have heard that after every mod engine wise it's a good idea to reset ecu to start from scratch. Didn't know if this had been done.
Long story short- reset ecu, now have one code-22, where is the knock sensor exactly and would it affect my idle as it now goes from 800 down to 200 and then back in small waves?

Anyone????

 

Konck sensor is located underneath the intercooler

 

Ta, will have a look when I get a chance. Anyone got any ideas about why the idle would be hunting???

 

dodgy maf ??