Wow; that's one heck of a sentence! The only thing I can understand is there's a long crank time sometimes. There's two possibilities. The fuel pressure is bleeding off when the engine is off or the fuel pump is failing to start up. When Chrysler fuel pumps fail, that's how it usually happens. They do not start up but once they're running they stay running.

The best place to start is by connecting a fuel pressure gauge and watching what happens when you try to start the engine. It's not uncommon for the pressure to bleed down but it should pop right back up the instant you turn on the ignition switch. That's the hum you hear for one second after turning on the switch. If the pressure doesn't come up right away and the engine doesn't start, turn the ignition switch off, wait a few seconds, then turn it on again. Listen for that hum each time to determine if the pump is running.

Answered by caradiodoc (expert)
17,256 answers provided

Sorry about the long sentance lol but I do hear the hum of the fuel pump kick on every time u hit it on the nose it acts like it loses its prime how would I fix that is it a sign of a bad fuel pump because two years ago when I changed the fuel pump it would still at thatway on occasion like it lost its prime when I go to restart it aftr shutting it off and it just resently started to have a long crank time

Response from bdudley86
2 questions asked

You have to monitor the fuel pressure to see what's happening. I've been driving around for the last ten months with a gauge tied to my radio antenna waiting for an intermittent problem to show up. So far it only occurs on hot summer days when I'm dragging a huge tandem axle enclosed trailer that's considerably bigger than the '88 Grand Caravan I pull it with.

Answered by caradiodoc (expert)
17,256 answers provided