1991 Not Starting
Thread Starter
Navigator
Joined: Apr 2020
Posts: 9
Likes: 1
From: Warrensburg, Missouri
1991 Not Starting
I found a garage find, 1991 with 46k miles. All fluids replaced, motor would crank over. I had no fuel pressure. Found a clog in the fuel rail replaced the fuel rail, installed with new injectors, plugs, wires went to turn the engine over hoping it would start and nothing... The security light goes out when the key is installed. I have trouble shot to the starting enable relay. The relay picks when the key is in run and drops when the key is turned to start. Any idea why this is?
Thread Starter
Navigator
Joined: Apr 2020
Posts: 9
Likes: 1
From: Warrensburg, Missouri
Nothing on the starter. I think the theft deterrent system is my problem now. Security light flashes all the time until key is inserted. I can only arm the system from passenger door. Tried setting off alarm with window down and opening the door and it didnt sound the horn. Horn works. I'll search theft deterrent system now.
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Instructor
Joined: Nov 2023
Posts: 164
Likes: 32
From: East Tennessee
I'm pretty sure that means the VATS is accepted. Someone may have to second me there.
If you directly jump the starter relay, does the engine start?
If it does, that means its not a VATS issue since it will kill both crank and injector pulse.
If you directly jump the starter relay, does the engine start?
If it does, that means its not a VATS issue since it will kill both crank and injector pulse.
Thread Starter
Navigator
Joined: Apr 2020
Posts: 9
Likes: 1
From: Warrensburg, Missouri
Jumped relay just to make sure motor would turn. I also think the starter enable relay is the farthest one on the left. The wire colors match the circuits I am looking at. It also picks when key is turned to start and puts voltage on the front contact. Now to find the transmissions position switch.