2000 4.7 v8 cuts off in about 20 min cools off runs 20 or 10 min more
Which engine>>
so you have 20 mins to find the cause, not sit and drink beer.
check for spark.
on all cylinders........ using the 100 year old way, we all should know.
ok say spark is good (if bad , scan it while bad, bingo got DTC>?)
sparks good
i NEXT use test fuel.
it starts and runs
it starts and stalls in 3sc
or does nothing
IN this order, unless want to do compression test hot fail.
watch scotty , do his magic. (100 years old this, magic, now.)
http://www.youtube.com/watch?v=064Ilsz8Fzg&NR=1&feature=fvwp
SOURCE: 1999 4.0L Jeep Grand Cherokee shuts down after 20-30 minutes.
I'd suggest the ignition control module, however I'd have a certified mechanic check it out just in case...
SOURCE: How to replace headlights on 2000 Jeep Grand Cherokee
One long bolt at the top - requires a 7mm socket to remove the bolt. The light housing will pry out with a screw driver. There are three ball and socket type connectors that hold the housing in and I just pryed off the plastic housing carefully and "balls" pop out of the sockets. Finally, I was replacing the faded plastic housing and it came with a new wiring harness. It's impossible to reach the connector to use the new wiring harness that comes with the new plastic light housing. So just use the existing wiring harness with the new light assembly.
SOURCE: My 2000 Grand Jeep Cherokee Cuts Off
Code check is when you have someone put a scanner on it and read computer fault codes. "post" is what you wrote. Crank sensor would be my guess too but with jeep computer systems every good guess is usually wrong!(ignition coil will "break down the same way"
SOURCE: 2000 jeep grand cherokee 4.0 liter engine timing belt replacement
If you have the same pulley arrangement that most 4.0 engines have that pulley is an idler not a tensioner. Your power steering pump has a pivot bolt, and a slide under the pump. You adjust belt tension using the pump.
SOURCE: Radiator fan will not turn off in my 2000 Jeep Grand Cherokee
usually the engine relay or cooling fan relay..!
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