2005 Jeep Grand Cherokee

10

Asked by Aleight100 Jun 11, 2019 at 12:13 PM about the 2005 Jeep Grand Cherokee Laredo

Question type: Maintenance & Repair

Our Jeep will not start when outside temp is hot.  When we turn over it just
clicks.  Starter relay has been tested and its good so we don't suspect starter
is the issue.  Vehicle starts just fine in morning when outside temp is cool.  
Was reading post that said radiator cooling fan could be culprit.  We are two
non mechanical people and are hoping to save the hours of troubleshooting
costs at the dealership.  Any suggestions or ideas would be most
appreciated.  Thanks!

3 Answers

28,320

Have the battery tested at an auto parts store, especially if it's more than three years old. A simple battery test you can do: When it won't start/turn over, jumper it and see if it runs. If a jumper helps, it would indicate the battery is at fault. Don't rule out the starter yet. They bind up when hot. Don't go to a dealership. An independent mechanic can fix that. Be careful doing jump start if you are not mechanical...get help.

1 people found this helpful.
10

There's no starting issue when outdoor temp is cool. Dash lights turn on when key inserted so I hadn't considered battery. We pulled out starting relay, pulled plastic housing and reinserted into fuse block. When key turned over and relay engaged it did attempt to start (even when hot outside) so we figured power to starter was good.

1 people found this helpful.
28,320

It doesn't take much power to turn on lights or beep the horn, but a starter can take 500-700 amperes to turn an engine over. A tired, old battery can't do that so testing it for free at an auto parts store might be a good place to start. They can even "load test" the starter to determine it's condition too. They test alternators. The problem is electrical so get it all tested for your future peace of mind.

1 people found this helpful.

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