rswebscan

I have a stock 1986 Z28 305 TPI with just over 70000 miles. Car usually runs great but occasionally will act up especially in the rain - when it will sometimes die. Car is showing "Service Engine Soon" and codes show:

33 MAF sensor or circuit too high
43 ESC Module of Sensor Circuit Problem
54 Fuel Pump Voltage too high or low

Most of the time car runs great but then will run rough at low rpms and sometimes die, occasionally surge when moving at near idle speeds and occasionally be very hard to start (usually immediately fires right up). When there is very high humidity or rain (or in the car wash) the car will die. It will restart but I have to run it at high rpms for a couple minutes to get the car to idle again without dying.

I have a new MAF and relay on the way. Anything else I should look for?

rswebscan

No one has any ideas?

Injuneer

Unfortunately, not a lot of 3rd Gen owners on the site. We did have many, but they've mostly drifted away as these cars get older:

Try reading through this thread:

https://www.camaroz28.com/forums/3rd...-ideas-371048/

This table shows the code interpretations:

1982 ? 1992 ECM Trouble Codes For Camaro & Firebird | IROCZONE.COM | IROC-Z Forums, Photos, Videos, History, Information, and more.

rswebscan

Thanks! You're making me feel old though

rswebscan

replaced the MAF and the MAF relay and now the car dies about 30% of the time when coming down to idle speed (stop light....).