Cherokee only starts if I step on gas...

That tells the computer to bypass certain sensor checks and start anyway.

Pull the diagnositc codes.

If it's running your fuel pump is working.

I'd say the computer is way confused, so first step is to reset it. Disconnect the battery for about 30 min then reattach it. If your Jeep has one, make sure the vehicle alarm is disarmed. Then turn the key to on, to run (not start) and listen for the pump to prime. Should run for a few seconds. Then turn the key to start.

The "check engine light" is not on.

Will that make a difference.

thanks for the help,

Mel

My Liberty did the same thing after a battery died. It would not start or idle without a foot on the gas. After about 15 minutes of highway driving things returned to normal and have been so since I replaced the battery. Curious!!!

My TJ was wacky when the battery was low. After replacing the battery (and allowing the computer to reset) all was good again.

Low battery causes all sorts of problems with the computer. Resetting it usually cures those problems.

Doug,

Reset the battery as you suggested and it works.

Thanks so much for the help and relieving the stress of getting a fuel pump or whatever fixed.

thanks aga>> Mel P. wrote:

Glad to hear that worked.

Depending on how old that battery is, you might want to look into a higher capacity replacement. I go with one from PepBoys, AutoZone, or similar box store simply because they are everywhere. Depending on where you live, winter will tell you if the battery is getting weak. Especially if the Jeep goes "clunk, rrrr, rrrr, rrr.." in the morning. ;)