well this is a very intermittent problem.
its a 88 xj 4.0 aw4 np231.
well this has happend 2 times this past week. i'll be driving down the road. then the truck just dies on me. i'll try to restart. and all i get is a little sputter out of it and it won't stay running. the first time i got it towed home. got home tryed it and still wouldn't start. so i sprayed some carb cleaner into the throttle body to rule out fuel. and it started up and stayed running. didn't have a problem for the rest of the week.
now today same thing happens. luckily i was only a block away from home so i got a friend to tow my the 2 blocks back home. before i got it towed though i tried the carb cleaner again. and it would fire it for a second. then it wouldn't stay running. so after some thinking. i decide to check the plugs and for spark. plugs were totally dry. not fouled at all. i get my buddy to ground the plug so we can check for spark. next thing you know the thing fires up and is running on 5cyls. so we shut it down. put the plug back in. and its running again.
so my quesiton is.... what the heck do i start checking?
its a 88 xj 4.0 aw4 np231.
well this has happend 2 times this past week. i'll be driving down the road. then the truck just dies on me. i'll try to restart. and all i get is a little sputter out of it and it won't stay running. the first time i got it towed home. got home tryed it and still wouldn't start. so i sprayed some carb cleaner into the throttle body to rule out fuel. and it started up and stayed running. didn't have a problem for the rest of the week.
now today same thing happens. luckily i was only a block away from home so i got a friend to tow my the 2 blocks back home. before i got it towed though i tried the carb cleaner again. and it would fire it for a second. then it wouldn't stay running. so after some thinking. i decide to check the plugs and for spark. plugs were totally dry. not fouled at all. i get my buddy to ground the plug so we can check for spark. next thing you know the thing fires up and is running on 5cyls. so we shut it down. put the plug back in. and its running again.
so my quesiton is.... what the heck do i start checking?