Originally Posted by 07cherokee55
I have a 2007 Jeep Grand Cherokee - just purchased it in December. First time it left me stranded was about a month ago. Wouldnt start, "transmission over temp" flashed. My son jiggled something in the fuse box and it started. Three weeks later, same thing, same transmission over temp flashed, wouldnt start for several hours. Let it sit overnight and it started. I took it to my mechanic who has been trying to repeat the problem for about a week. I called the dealer where I purchased it, who referred me to the jeep dealer they do business with in Annapolis. I called the jeep dealer, the service manager told me that the "transmission over temp" will ALWAYS flash for a split second when the vehicle won't start. I'm bringing the jeep in to his shop Monday morning. He said that it is his belief that the wiring to the solenoid / starter is most likely the issue. I asked him if it was the wiring what am I looking at in terms of cost - $400-$500 - which seems steep. Has anyone on this blog resolved their problem? If so, how? Any help is most appreciated!
We can probably offer better areas to check if you could post eng/xmission on your Heep. Filling out your profile is another option.
Today, you can do 3 things:
1. Disconnect the battery leads and clean them with a wire brush, if they are corroded.
2. While the battery leads are disconnected, check the 2 leads to your starter motor. The smaller yellow lead to the solenoid has been known to corrode on the 5.7L HEMI's and cause intermittent starting problems. Not sure about other engines.
3. If battery age is unknown, go to Sears and get a Battery Capacity Test
. Battery voltage with engine stopped should be 12.5-13.2V and running 13.8-14.2V. Capacity test is different.