After driving my 89 for even 10mi on a worm (80+) day after shuting it off for a few min. it won't start again for 30 min. Some kind of relay to starter? Every thing else works, After it sets for 30min. it fires right up....... just like nothing ever happened.....
Go to a local parts store, and get a 5 prong relay kit and wire it up at your starter solenoid(they should be able to give you a wiring diagram). You will need a crimping tool and a couple cable ends to do this. Usually use spade connecter to connect the original kick-in wire to the switch side of the relay, and zip tie the relay to the solenoid.
That way if you remove the starter the relay will come off with it. After 20 or so years, the wiring starts to break down, and when the engine gets hot the wire will not carry enough voltage to kick in the solenoid. It is a very common problem on late 80's early 90's
chevys, toyotas, and Nissan.
Or Replace the starter and you'll have no more problems with it. make sure the heat shield in still there above the starter or the starter will get back to its old habits again later on.
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Just to make sure i cover all the base for everyone:
By not starting, do you mean the
(1) starter engages but the engine does not fire
(2) starter does not engage but issues a high pitched whine without turning the engine
(3) the starter turns very slowly?
1. usually means a vapor lock in the fuel line...but since your engine is probably a TBI system this may not be the problem. However check for a fuel spray in the venturi when the throttle cable is pulled. Do this with the air cleaner off so you can see down into the throttle body.
2. The bendix is not engaging properly......replace the starter with a quality rebuild or new unit. Be sure to check for any shims between the block and starter when removing the old starter....you'll need to reinstall to ensure proper engagement between the flywheel and starter gear teeth.
3. The starter is heat soaked causing high electrical resistance. If you can install a heat shield between the exhaust and the starter body. I've used Heat wrap for headers in the past with my old school truck in the past. This will work nicely if headers were installed by a previous owner.
Cold starts are another matter. Check plugs, plug wires, rotor/cap and replace as necessary. On TBI engines, hard cold starts are usually caused by a faulty coolant temperature sensor. Check it for a loose connection. A Haynes manual will tell you where it's located. For plug wires, go to NAPA and get their guaranteed for life wires. They will replace the set no questions asked if a future problem occurs. Also replace the fuel filter....usually it's long over due on older trucks.
http://www.compnine.com/index.php?u...delid=6556&capuid=1&majorgroup=02&grouptype=B
