I have a 2000 Jeep Grand Cherokee Laredo, 4.7 L V8 and have been having starting problems intermittently over the past 12 months. When turning key the gauges and lights come on, but the engine does not turn over. No clicking noise etc. Normally I let the car sit for 30 -45 minutes or sometime it take hours until it cranks again. For last month I drove Jeep every day to work and it was starting just fine with no problem anywhere and anytime. Today I drove it to work and after Jeep was sitting 2 hours I could not crank it again. I let it sit 30 minutes, one hour, 2 Hours and nothing.I did not bother to tow it to dealership cause I knew that in time they look at it it would crank again and them telling me that they cannot duplicate the problem as they did before. So I came back to my Jeep and started it later this evening. First step I'm planning is to replace the starter ,but I'm also suspecting that its got something to do with immobilizer (Sentry system) or ignition switch.
Did anyone had this problem ?
Battery was changed after problems started and did not help.
Battery does not seem to be the issue nor neutral switch.(45RE trans)
It always hapen after some driving 99% on warm sunny days (I live in south)when Jeep is sitting directly on sun for couple hours I don't have idea why.
Cranks on cold days or when engine is cold at morning
2000 WJ V8 Laredo RWD 110K, K&N intake
2000 WJ I6 Laredo RWD 83K, base model