2007 3.7l Starter/Terminal Location - JeepForum.com
 
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post #1 of 9 Old 10-06-2011, 10:36 AM Thread Starter
markjgc
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2007 3.7l Starter/Terminal Location

Hello, Could someone please explain to me where the starter/wire terminal is located? Is is possible to check on the wire terminal for corrosion?
I have the power no start issue and I'm desperately trying to locate the yellow wire for possible corrosion before calling for tow and paying $500++ for new starter etc.. when it could well be corrosion on terminal. I have just experienced this issue for the first time this morning. Any and all help greatly appreciated. Thanks

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post #2 of 9 Old 10-07-2011, 07:50 PM
JKM
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corrosion is in the crimp at the terminal. Very hard to see, especially on the truck. Crawl underneath and move the wire around. If it starts, then this is likely your problem. You will need to put it up on jackstands or ramps to crawl under there. It's the yellow wire to goes to the starter solenoid (on the starter).
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post #3 of 9 Old 10-07-2011, 09:49 PM
t3kmitch
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If you're asking where the location is in terms of the body, it's driver's side accessible (barely) from the bottom. My lift makes it a little easier to get under, so I don't know if you actually do need ramps or jackstands, but I just get out and crawl right under behind the wheel well. You'll see a drive shaft and follow that to the front until it ends and it should be near that, just above. Just in case you don't know what a starter looks like just google image it and you'll get the idea. My yellow wire is the only one that has any play in it so I found it that way.

Don't know how kosher it is but after having to crawl under a couple times I got under and wiggled and wd-40'd it a bit. Been working steady since then. I plan on doing a permanent fix in the near future, just haven't been able to find time between work and school.

Edit: After googling a bit it seems WD-40 isn't the best to use on electrical connections. Works as a temporary fix but leaves a film that collects dust effectively insulating rather than conducting. I still stand by my WD-40 since I plan on replacing the terminal in the near future, but if you're looking for a long term fix I can't necessarily recommend wd-40.

-Sold 3/13. Replaced by 2010 VW Jetta 2.5-
2005 WK 3.7L Laredo. RC 2", 265 70 17 Bridgestone Dueler Revo 2's. Class III OEM hitch added. Bilstein Struts. Monroe Load Levelers (58643).
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post #4 of 9 Old 10-08-2011, 11:37 PM
t3kmitch
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I was cleaning up my connection a bit better today and took a couple pictures to show the general location. This would be where you reach it just to get it started in a parking lot or something, there's a little better access underneath the factory skid/plastic protector. You can see the red wire in the second picture, the yellow one is right next to it.



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-Sold 3/13. Replaced by 2010 VW Jetta 2.5-
2005 WK 3.7L Laredo. RC 2", 265 70 17 Bridgestone Dueler Revo 2's. Class III OEM hitch added. Bilstein Struts. Monroe Load Levelers (58643).
Blue WK Club Member #32
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post #5 of 9 Old 10-10-2011, 07:05 AM Thread Starter
markjgc
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Thank you for your detailed information/description regarding the location of the starter. Although I was able to visually find the starter from under the truck, I could not for the life of me reach it with a single finger! You mentioned "This would be where you reach it just to get it started in a parking lot or something"... I found the only way I could even reach it with a long handled screw drive was through the wheel well cover after raising up on jack and removing tire and cover. I did discover that just by tapping on the Yellow wire connection a few times I was able to start it right up. So, I am assuming that its not a bad starter but a corrosion issue on the connection. I know I can fix this and or replace the whole starter if I need to but how in the world can you even access it without removing everything in its way? Thanks again!

"I was cleaning up my connection a bit better today and took a couple pictures to show the general location. This would be where you reach it just to get it started in a parking lot or something, there's a little better access underneath the factory skid/plastic protector."
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post #6 of 9 Old 10-11-2011, 12:42 PM
JKM
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take the plastic skid plate off (4 bolts) that covers the bottom of the motor. When I did mine I raised the front end on axle stands, crawled underneath and got my arms up in there around the exhaust. Make sure to let the motor cool so you don't burn yourself on the exhaust. The current connector has a tab you need to press on to release the connector. It's a pain so take your time and wiggle it while pressing on the tab. May come off easy or you may need to play with it for a bit. Plan a few hours and a few breaks for your sanity. Would be much easier on a lift
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post #7 of 9 Old 10-14-2011, 06:03 PM
07WKLtd
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Quote:
Originally Posted by t3kmitch View Post
I was cleaning up my connection a bit better today and took a couple pictures to show the general location. This would be where you reach it just to get it started in a parking lot or something, there's a little better access underneath the factory skid/plastic protector. You can see the red wire in the second picture, the yellow one is right next to it.



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Many thanks for the writeup & pictures.

I read this last night and thought to myself "good to know".

About an hour ago my wife ran out to grab a gallon of milk & called me from the store to say the Jeep wouldn't start. Full power, and no cranking as described by others. I was a little hesitant at first as I couldn't see a yellow wire - just the red one with two others in wire loom right next to it. Gave it a couple of taps without luck, but then managed to move it about an inch, and after that the Jeep started right back up.

Of course it was pouring rain the whole time, so that was just delightful.

Anyhow, here's to hoping it doesn't happen again before I can get it to the shop on Monday. Oh, and I've got the 4.7L, so it's the same issue as the 3.7L
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post #8 of 9 Old 01-19-2012, 05:11 PM
Train
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Great info! I have got that problem and now am back on the road! I have removed the clip using plyers after trying doing that by hand. Certainly this is the way to go. Scrabed the contact with sandpaper and put the clip back in place. I have then used ignition/contact sealer to protect the contact for the future. I hope that is it - for years to come. Thanks a lot!
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post #9 of 9 Old 01-19-2012, 08:50 PM
magneticred
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