rusty vango

heres what my car is doing . when cold (28F) or so .it runs very rich , and the CEL is on with a 32 and 34 showing . it misses until you have driven it around 10 miles. i can then shut it off and re start it and it runs normally with no CEL on for the rest of the day. what should i be looking at as to the cause of this ?? its a bone stock 86 TPI 305. in good health and tune. otherwise

ploegi

DTC - 32 EGR system failure

DTC - 34 MAP sensor circuit error (signal low indicating high vacuum)

Is 86 MAP? I thought you would have a maf sensor......

Check and see if your EGR valve is sticking open.

aliceempire

iTrader: (14)

What's the MAF connector look like, maybe it makes poor contact in the cold.

rusty vango

the maf connector looks normal . wiggling it makes no diffrence

aliceempire

iTrader: (14)

Connector at the ECM? They usually fit tight but you never know. Testing by trying to keep certain parts warm to see if it changes.

rusty vango

i thought of that too . so i put a heating pad on the ECM . and at 28F ,even with the ECM at 100f . the cold start miss and stumble is still there. now this car has a new MAF and both relays . a recent ECM with a chip from "tuned performance" a new IAC and TPS (which , by the way i cant seem to get right ). recent injectors and FPR too. once it gets to operating temp , and you shut it off . and re start it . all is normal and there is no CEL

aliceempire

iTrader: (14)

Iirc you went through a debacle getting a good new maf, possible there's a circuit problem in that maf? Try keeping it warm.