Code 36 - Mass Air Burnoff Relay

[Tonylong]

I've been getting code 36 - Mass Air Burnoff Relay errors for the last
several weeks on my '89. It's not constant but very frequent. The FSM
says that if not constant then not a serious problem.
However ... I've also noticed that since this began the average mpg has risen from 15.5 to 17.5 !! WTF?? I haven't changed my driving, still heavy on the pedal every chance I get.
Anyone else have a like experience ?
Anyone can comment on code 36 and its ramifications ?
TIA

 

[hoosierguy60]

maf relay

i replaced the maf relay for the run mode but not the burnoff mode . the relay was $14.00 at autozone . dont know how much the burnoff is but i would think its about the same . not too bad a price unless there is something else that may be a problem. good luck .....mike

 

[rrubel]

I was told the two relays are identical, so you could swap the leads to them and see if your problem goes away (and mileage drops ).

Maybe the warmer weather is helping.
[RICHR]