No crank after hard rain, but after 4th try it cranks - JeepForum.com

 
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post #1 of 3 Old 09-08-2011, 07:26 AM Thread Starter
Reddy89
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1989 YJ Wrangler 
 
Join Date: Jun 2010
Posts: 343
No crank after hard rain, but after 4th try it cranks

Jeepy has never liked the rain.

So Tuesday morning, (it's been raining all week), I turn the key and it doesn't crank, not even a click from the under the hood. Lights turn on and everything else works.

After about the 4th try it cranks and fires to life.

Same issue Wednesday morning, no crank, after turning the key off/on-start about 4 tries it cranks and starts. It stopped raining that afternoon and when I went to start it it fired right up, no issues.

I thought it could be the CPS, but searching says if it were, it would crank but wouldn't start. Is this sensor related? Bad starter? Solenoid? I thought something could be getting wet but wouldn't it be impossible to start then?

Background:
Jeep is nuttered, I will admit the wiring part isn't the best but I did everything last year. We replaced the windshield hinges a few months ago and there is no visible sign of water leaking. The shop put in a new exhaust a couple weeks ago.

I haven't opened the hood yet because the sky is dropping buckets of rain! I did get under the jeep, and saw that the positive battery cable was nice and snug with the starter (replaced the cable several weeks ago).

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post #2 of 3 Old 09-08-2011, 08:15 AM
EABiker
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1989 YJ Wrangler 
 
Join Date: Dec 2004
Location: Frederick, MD
Posts: 1,729
Clean your battery connections, as well as the cable to terminal connection if it is not the molded-in type. The white crud that builds up absorbs moisture wich in turn limits the available current.
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post #3 of 3 Old 09-08-2011, 10:43 AM Thread Starter
Reddy89
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1989 YJ Wrangler 
 
Join Date: Jun 2010
Posts: 343
Quote:
Originally Posted by EABiker View Post
Clean your battery connections, as well as the cable to terminal connection if it is not the molded-in type. The white crud that builds up absorbs moisture wich in turn limits the available current.
They are spotless, the ground on the engine block could be cleaned of oil though.

It happened again this morning, I then drove it for half an hour, then it sat for an hour, went back out and it cranked on the first try.
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