PewterScreaminMach

iTrader: (7)

I have an 88 Formula 305 TBI and the past couple of nights when I turn the car off, the fan stays on. Last night I thought it might go off but when I went out an hour and a half later it was still going. I unplugged the battery for the night and when I plugged it in this morning for work it didn't come back on until I started the car, but then when I got to work I had to unplug the battery again because it stayed on. Thoughts?

ItsNotStock

iTrader: (24)

Could be the relay is going bad. Sometimes the gate in the relay gets stuck on-You either have to replace it, or if you have trouble finding one a temporary solution is to whack it with something to re-set the gate (seriously).

PewterScreaminMach

iTrader: (7)

Whack the relay, you mean?

Formula413

iTrader: (1)

Yup, tap on the relay itself (not too hard). Alternately you could whack the fan, if you whack it hard enough it will surely stop running.

ItsNotStock

iTrader: (24)

Yes, just pull the relay out that controls the fans. And tap on it with the back of a screw-driver. Put it back in and see if the problem comes back.