gspur1

have a 1985 vette got 33 and 34 code shy of replacing parts , some are expencive, what can i do to check first, and my maf relay and burn off are not 2 side by side relays behind the batt, there is a couple things on top of each other, but look nothing like what i see in pics, plus when i check maf relay at partsgeek or other it shows a small flat relay, and where is it.

thanks, used you guys a lot always helpful

vader86

85's burnoff module is buried behind the center bezel, it does not have the two relays, that started in 86. You will need a shop manual with the procedure to test the MAF sensor and module specific to 1985.

Cliff Harris

I would suspect a bad connection at the MAF. A corroded pin in the connector can cause your symptoms. You might have a problem in the wiring...

The 1985 MAF burnoff module has one relay in it that does both the MAF power and MAF burnoff functions. Here's a pic of the PC board: