Question about 2001 Jeep Grand Cherokee

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Cranks but won't start

Just replaced the battery. Auto is cranking but not turning over. It's cold up here also. Suspecting gas line freeze since it's so cold up here. I put some gas treatment in it. It has 1/4 tank of gas in it. No warning signs given prior to current problem.

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  • Mike Butler
    Mike Butler May 11, 2010

    Can you hear fuel pump humming when you cycle key to on?(not start) Does it have some kind of alarm system that may be tripped due to battery disconnect?

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  • Jeep Master
  • 6,982 Answers

1. cranking is "turning over". Starting is what it is not doing. Did you check for spark at plugs when cranking? Why did you change battery?
If fuel line is frozen, generally freeze takes place in the line. Anything you add to tank will not help at this point. (you can heat line with a hair dryer etc (no torches) Most fuels today contain some alcohol so antifreeze for fuel is pretty much redundant. If you have been cranking it fore some time, it would be a good idea to check spark plugs to make sure they are still dry and not fuel fouled... Liquid gasoline does not burn... only fumes ignite. In cold weather, fuel does not vaporize properly and can easily foul plugs.

Posted on Jan 31, 2009

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