1999jeep

ok i have a 1999 grand cherokee laredo 4.0 4x4
when im driving down the road at speed(55-65) or whatever speed im going it stalls.
first time it happened it happened so fast that the momentum restarted the car.second time i was ideling at the car wash and it just stalled...both times it started right back up.
Third time it happened at speed agian but this time i poped it in nuetral and coasted to a stop,when i tryed to restart it it just rolled over and never fired so i shut the key off for like 10 secs and tryed agian it fired right up. forth time it did the same as the first time ,it was so fast that it was restarted b4 i could do anything....any ideas???


Ithought it was the fuel pump dieing but i thought they always tend to just go and not mess around tonight i am taking the crank sensor out and cleaning it to see if its cool or not.I thought mabey a fuel fitler too so i went and bought it and its a PRESSEURE REGULATOR too this jeep is way to new. so any thoughts would be great thanks

ol"blue

First thing you need to do before monkeying with it is to check to see if any codes are stored. Here's how.>http://jeephorizons.com/phpbb/viewtopic.php?t=2719
If it doesn't give any fault codes for the components you've named, I wouldn't touch them.
Secondly, that vacuum leak is causing running issues. After it's fixed, disconnect the battery for awhile so it will "forget" the problems. Then after hooking the battery back up, take a good drive so it can re-learn the system parameters.
Don't waste time and or money fixing things that aren't broken. Work smarter, not harder. Hope this is helpful.

seed

blue's right,the filter/regulator is not routine maintenance,if there was something wrong with it,it would throw a code

1999jeep

i cant afford the brake booster and im not sure thats what the prob is so.i say this because i have been driving with the booster leak for a few months now and the stalling just started.

1999jeep

so im thinking i will unhook the booster and plug the vaccume line and se what that does

1999jeep

from some of the posts i have read on this site others have the same prob i was told it was the crank shatf sensor but have read on here that they have fixed that and still had the prob i dont know what to do.but whatever i do i have to do it cheaply...

1999jeep

update on the stalling as well it stalled today same as always going down the road but took a very long time to restart any ideas please