Starting problems on jeep.

Asked by Guru951YF7 Jan 09, 2021 at 03:05 PM about the 2002 Jeep Grand Cherokee

Question type: Maintenance & Repair

Jeep will only start with heat on. Won't start
if heats off. Replaced altantor. New battery.
No blown fuses. Please help

1 Answer
26,860

oilyspill answered 3 years ago

if your saying it cranks good, but, won't start, check the basics. Make sure battery has a full charge and connections all good. Have a helper crank it while you check for spark at the plugs. If spark everywhere, use a gage and check proper fuel pressure. Check fuel injector pulse. Check for applicable trouble codes. Those are the basic checks, in my opinion. At the moment, I don't know what the heater has to do with it?

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