I have a 99 z28 m6 and first off my car has been trying to over heat on me and i can hear air bubbles in the radiator. I have tried many of times to get them out but still no luck....

2nd my car is throwing a MAF Circuit low input code (P0102) and A 1-4 Upshift solenoid circuit Malfunction code (P0803)..

I dont have any Cats on my car and it is not throwing any codes for the O2 sensors.... If anybody has any suggestions or ways to fix thse problems it would be greatly appreciated...

 

The MAF and skip shift are on the same circuit - check and see if the ENG SEN fuse is blown. For the overheating make sure the radiator cap is holding pressure.

 

Check your thermostat for overheating. If you are in the Detroit area I think I have one laying around you can have.

-Geoff

 

if i replace the ENG SEN fuse what are the chances it is going to blow again...

Tennessee..

 

i checked my ENG SEN it was blown

 

Try replacing the fuse and see what happens, most likely cause is a shorted 02 sensor harness against a header - if you have LTs. If not, it's something else on the circuit. I should've mentioned in my earlier post that the H02S' and reverse lockout solenoid (M6) are also on that circuit.

 

anybody have any idea why its not throwing O2 codes if i dont have any in???