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post #1 of Old 01-28-2009, 09:52 PM Thread Starter
SeaWulf
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1983 CJ7 
 
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Bypass bad starter solenoid?

I believe that my starter solenoid has gone bad. Before I replace it I want to be sure its bad. The battery drains in an hour and there is a soft buzz coming from the pass side engine bay. The starter gets power, but not enough to turn over the engine, thus leading me to believe its the solenoid. (already replaced the starter)

Anyway,

Can I bypass the starter solenoid to start the engine?

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post #2 of Old 01-28-2009, 11:08 PM
JeepHammer
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I'd say starter relay (solenoid) switch.

The Relay is supposed to break the connection clean when you let off the key, but if things go wrong inside.... Who knows!
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post #3 of Old 01-29-2009, 02:36 AM
John Strenk
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I use to use the old "Pliers" trick to bypass the relay but it gets exciting with sparks flying and big divots in your pliers handle.

A lot of times the battery cables have corroded to the extent they supply enough power to activate the solenoid but not enough to turn over the engine. I have to change cables evey few years on my CJ because of all the salt I play in.

You could measure the voltage across each cable to identify the bad one. (A resistance check wont work in this case unless your ohm meter uses 20 amps to measure the resistance ) or just pick up a set of new cables. 3ea.
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post #4 of Old 01-29-2009, 06:52 AM Thread Starter
SeaWulf
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Quote:
Originally Posted by John Strenk View Post
or just pick up a set of new cables. 3ea.
I already tried a new battery, starter, and cables, that's why I asked about the starter solenoid.
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post #5 of Old 01-29-2009, 07:18 AM
seagrave
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It does not hurt to replace the starter solenoid. I just replaces mine last night for about $10 new.
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post #6 of Old 01-29-2009, 07:26 AM Thread Starter
SeaWulf
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Can I get a picture of the solenoid showing which two posts to short? I just want to be sure I get it right
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post #7 of Old 01-29-2009, 10:50 AM
John Strenk
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Oh you can't miss it.
Just the two biggest post with the biggest cables going to them.

Just make sure your not in gear before you short them together.
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post #8 of Old 01-29-2009, 11:31 AM
479AZ
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If you jump power from the battery side of the solenoid to the small terminal closest to the front of the vehicle that should engage the solenoid. Inside it's just an elctromagnet that closes a big contact. If you jump across both large terminals you need to use a heavy cable since it will carry the total amperage needed to spin the starter. The other way just closes the switch.
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post #9 of Old 01-29-2009, 05:57 PM Thread Starter
SeaWulf
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thanks for the tips guys!

Unfortunately I won't have a chance to look at the jeep again for a few day.
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post #10 of Old 01-29-2009, 08:28 PM
mcurcio1989
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I am not sure if you live near any auto zones but I picked up a rebuilt stater for 20 dollars after the core return. They also have a life time warranty for about ten dollars so basically I'm set for life for thirty dollars. It's almost unbelievable. I would recomend just putting a new or rebuilt starter in i tant hurt and for 20 dollars its almost not worth the time of trying to verify that it is the starter. Just a thought. . .
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post #11 of Old 01-29-2009, 09:11 PM Thread Starter
SeaWulf
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Originally Posted by mcurcio1989 View Post
I am not sure if you live near any auto zones but I picked up a rebuilt stater for 20 dollars after the core return. They also have a life time warranty for about ten dollars so basically I'm set for life for thirty dollars. It's almost unbelievable. I would recomend just putting a new or rebuilt starter in i tant hurt and for 20 dollars its almost not worth the time of trying to verify that it is the starter. Just a thought. . .
First thing I did along with a new battery and cables.
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post #12 of Old 03-03-2012, 08:22 PM
klr650
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[QUOTE=SeaWulf;6464095]First thing I did along with a new battery and cables.[/QUO

sounds like it could be the voltage regulator check on that
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post #13 of Old 07-10-2013, 11:25 PM
Millerlite13
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Really?

Ok man it's not what you think it is, really surprised no one has told you it's your alternator. Easy to check
1: get it runnin
2: disconnect the battery.
If it dies ,its the alternator. If you hear a clicking when you start it that mean the solenoid is ok and doing its job.
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post #14 of Old 07-11-2013, 03:36 AM
BagusJeep
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Quote:
Originally Posted by Millerlite13 View Post
Ok man it's not what you think it is, really surprised no one has told you it's your alternator. Easy to check
1: get it runnin
2: disconnect the battery.
If it dies ,its the alternator. If you hear a clicking when you start it that mean the solenoid is ok and doing its job.
I think in the last 4 years he may have fixed it.

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post #15 of Old 07-11-2013, 09:43 AM
texas1al
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Be careful, a bad solenoid can eat up ignition modules if it's stuck. Might be a good idea to replace it soon.
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