2002 Jeep Grand Cherokee Limited Not Starting Intermittently

Judith double posts, this time, ANONY.
sorry,
find a real shop.,
and ASE shop
ask them to scan it.
must I repeat this 2 more times?
this is a USA forum,. are you?

google ASE shop locations, and WIN.

First check for spark at any of the sparkplugs.

need to scan for codes to see what ecm has pick-up
may also need to monitor with scanner

Hi
Pop into to your local garage and have a diagnostic test carried out.
Listen to the advise given. It may save you lots of money, especially if you start the "guessing" game.
It does sound like a part may be blocked or failed though, but the sytem needs to be tested thoroughly first.
Good luck
Roger

Check where the wires go into the blower housing. There is usually what appears to be a small plate held by 1 or 2 screws that the wires plug into. This is the speed control resistor. If it's going bad, it will cause the problem you describe.

Did you ever find solution to this problem? Same exact thing with my 1999 4.7L.

Sounds like the nuetral safty switch is starting to go bad. the switch makes sure that the car is in park or neutral before it will alow the engine to crank over.

Are you topping off the gas tank (MAX OUT) while you're filling?

The emission control system can soak with gasoline if you over fill the tank.

Locate the emission line that lead to the charcoal canister and let it air out under direct sunlight.

After 1-2 hours,reconnect the line and use starting fluid to start the car.

After 10 minutes of warm up time,then take it for a short test drive.

If you haven't changed the plugs or had the fuel system cleaned, now would be a good time to do it. The number 1 culprit for rough idles is dirty injectors or plugs. You can try an injector cleaner in a can (or bottle) for under $10 and see if it helps, and then work from there. If there isn't any improvement then if you are able to, check the plugs for any gunky buildup and if you find a bad plug, make sure you replace them all (or have them replaced) at the same time.

Check the map sensor.