My 90 RS wont start up, it cranks but wont turn over, I think its my main fuel relay, where may I find it to give it a tap? <stuck@work>

 

The main fuel relay is under the driver side dash. I just ordered one from AHmotor.com the other day. $45 or so. I've found that if I leave the car off for a few minutes, key out of the ignition, and then put the key in and turn it to the last notch without starting it, wait for the check engine light to come on and if it stays on then take the key out again. If it goes on and then blinks then it will turn off in a second and you can start the car. I don't know if this is just with my car or if it will happen to all of 'em. I've had to wait anywhere from 2 seconds to almost 10 minutes. Hope this helps.

Ben

 

You can also listen for it. When you turn the key to ON, you should hear the fuel pump kick in for 2 seconds. If you can hear it, the main relay is okay. If you DON'T hear it, your main relay is dead.

If you're adventurous, main relays can be repaired. The solder joints on the board are what tend to go -- not the relay contacts. The solder joints can be re-flowed.

 

I tried to listen for the fuel pump before but I couldn't hear it over the sound of the automatic seatbelt moving back. That and there probably was no noise from the fuel pump. Maybe next time I'll try leaving the door open so the seatbelt stays put while I listen.