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My 99 Jeep Wrangler starter wont spin the motor. Been running and starting fine, then yesterday, drove to the bank, went in, came out, Jeep wouldnt start..Starter initially "wanted" to spin the motor, then immediately wouldnt, seemed like battery at first. Had it towed home.
I have removed starter, had it bench checked... passed.
Battery checked...passed
Starter relay is functioning properly.
Now when I turn ignition to start, circuits are made, but starter doesnt make a sound!
Can a starter pass a bench test, but not have enough "ooomph" to turn the motor?? I have checked and tightened both grounds, to the motor and to the frame. I even "shorted" the 2 contacts on the starter to bypass the ignition switch and relays..nothing.
Battery tests OK, and has PLENTY of juice to power everything else on Jeep. You think my pos battery cable may be bad? Only thing NOT functioning is the starter. I'm still troubleshooting!
The positive cable on my GMC truck was corroding inside the insulation.
I could wiggle it around and get it started until I was able to replace it.
Just went out and connected my battery + terminal to the starter + post with my jumper cables, thus taking the battery cable out of the equation. Turned the key...nothing. The starter relay is working, as power goes to the solenoid when the key is turned to ignition. Also verifies the ignition switch is working. Any chance a less than perfect ground would cause this???
Going out to try the hammer!
UPDATE
The hammer method got some results!!! I whacked it a couple oftimes and the starter did engage, very briefly. Tried starter again..nothing. Whacked it, starter engaged. Tried again...nothing. Whacked, engaged. I'm seeing a pattern here. I'm now suspecting a bad starter, even though it bench tested GOOD at NAPA.
Opinions?
Last edited by MakoShark72; Dec 23, 2007 at 09:05 PM.
Just went out and connected my battery + terminal to the starter + post with my jumper cables, thus taking the battery cable out of the equation. Turned the key...nothing. The starter relay is working, as power goes to the solenoid when the key is turned to ignition. Also verifies the ignition switch is working. Any chance a less than perfect ground would cause this???
Going out to try the hammer!
It's funny this thread comes up.. Just went through the same problem this morning with my sister's 97 silverado..she came over last night and everything was good, went to leave and truck acted like a dead battery, tried to jump start, no go.. looked like her + cable was shot /...replaced it..still nothing. already has new battery.. so dropped starter to check directly hooked to battery...nothing..had it bench tested... starter was shot...replaced the starter....good as new...
some starters can give out with no warning..
Just went out and connected my battery + terminal to the starter + post with my jumper cables, thus taking the battery cable out of the equation. Turned the key...nothing. The starter relay is working, as power goes to the solenoid when the key is turned to ignition. Also verifies the ignition switch is working. Any chance a less than perfect ground would cause this???
Going out to try the hammer!
UPDATE The hammer method got some results!!! I whacked it a couple oftimes and the starter did engage, very briefly. Tried starter again..nothing. Whacked it, starter engaged. Tried again...nothing. Whacked, engaged. I'm seeing a pattern here. I'm now suspecting a bad starter, even though it bench tested GOOD at NAPA.
Opinions?
My other truck was doing the same thing over the summer while I was setting it up as a plow truck, but in my case the truck would start.
I put a new starter in it and haven't had a problem since and the old starter bench tested good too.
This should be an easy one. How many miles on the vehicle/starter? If it has over 80k miles, most likely the brushes are shot. Could be a bad solenoid, but I doubt it. You can get a rebuilt or a new starter. On 1960's and 70's starters, replacing brushes is an easy rebuild. Even did this on my son's 88 Firebird. Brushes are cheap. Not much to it.
This should be an easy one. How many miles on the vehicle/starter? If it has over 80k miles, most likely the brushes are shot. Could be a bad solenoid, but I doubt it. You can get a rebuilt or a new starter. On 1960's and 70's starters, replacing brushes is an easy rebuild. Even did this on my son's 88 Firebird. Brushes are cheap. Not much to it.
Its a 99 Wrangler, I think its the starter...$105..
If the hammer wack got results where the starter did not turn on start, it needs to be replaced. I kept a truck running a couple days that way until I got a chance to replace the starter. It is a gamble, so don't depend on it; I just got lucky. Always check wire terminals while you are replacing components.