Won't start with a key
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New User
Joined: Mar 2002
Posts: 24
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From: Henderson USA
Won't start with a key
I've got an '88 Bronco 5.8 C-6. It will start if I jump the starter solenoid (relay). I only get 6 volts going to the S terminal on the relay. I don't know if that's enough. I replaced the relay with a cheap Pep Boys/Checker model with no change. I was told those cheap relays sometimes don't do the trick, so I bought one from Ford which also didn't work. The neutral safety switch was replaced several months ago, and I put in a new ignition switch. The battery and cables are all new. The only sound I get when I turn the key is the fuel pump relay. Any ideas?
Posting Guru
Joined: Jun 1999
Posts: 2,415
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From: Comox Valley, Canada
Won't start with a key
A short no..but a corroded or loose or dirty connection can cause a resistance which reduces the voltage.
Try removing and cleaning the small red/blue striped wire on the starter relay. Then check the voltage...or try to start the truck.
If still no good start tracing the red/blue wire back and find where it is no good.
ps
This may help
https://www.ford-trucks.com/forums/s...hreadid=124657
Try removing and cleaning the small red/blue striped wire on the starter relay. Then check the voltage...or try to start the truck.
If still no good start tracing the red/blue wire back and find where it is no good.
ps
This may help
https://www.ford-trucks.com/forums/s...hreadid=124657
Thread Starter
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New User
Joined: Mar 2002
Posts: 24
Likes: 0
From: Henderson USA
Won't start with a key
That is correct. When I turn the key to start, the reading at the red/blu wire going to the S terminal shows 6 volts. The wire is clean and has good contact at the solenoid, but I will trace it back to the ignition switch and see if its bad. Thanks for the responses.
Posting Guru
Joined: May 2003
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Won't start with a key
Is it possible that the link between the lock cylinder and the ign switch in the steering column is broken? I have seen many of them that would turn on the ignition but not move the switch far enough to crank the motor.
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Senior User
Joined: Jun 2003
Posts: 439
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From: Burnsville, MN
Won't start with a key
Or, the start cable from the ignition switch has excessive resistance. I have only seen this in vehicles with tilt columns.
Check the start cable voltage at the ignition switch (it should be 12+ volts). If it is less than that at the solenoid, then look for a corroded connection at the firewall or an internally broken wire.
Check the start cable voltage at the ignition switch (it should be 12+ volts). If it is less than that at the solenoid, then look for a corroded connection at the firewall or an internally broken wire.
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