1990 Jeep Cherokee takes forever to start

[atfrith]

Hey Bill99hawk, that worked great, turned the key for about 5 seconds this morning, then it started right up, it hasn't acted up once today. Thanks for the tip. What exactly does this do by turning it on for a few seconds?

[Dale Aeppli]

Originally Posted by atfrith

Hey Bill99hawk, that worked great, turned the key for about 5 seconds this morning, then it started right up, it hasn't acted up once today. Thanks for the tip. What exactly does this do by turning it on for a few seconds?

HI , WHEN YOU TURN THE KEY AND WAIT A FEW SECONDS IT IS LETTING THE FUEL PUMP PRIME THE FUEL RAIL. SOUNDS LIKE YOU MAY HAVE A BAD PRESSURE RELIEF VALVE IT IS THE LITTLE CANISTER WITH SMALL VACUUM HOSE ON IT. ITS RIGHT ON THE FRONT OF THE FUEL RAIL THERE ARE O RINGS THAT CAN BE CHANGED IN IT. HOPE THIS HELPS OUT DALE [email protected]

[Saudade]

Hmmmm..... Interesting stuff. After reading about how long it actually takes to start your car, I have to say it takes nearly that long with mine too '88 Laredo). About 6 seconds when fully cold, the 2-3 seconds when warm/hot. Otherwise, it runs fine. Over the past 2 years, I have changed (for other reasons), the starter, battery, battery cables, fuel filter, CPS, ign coil, dist cap, rotor, plug wires, numerous vacuum lines and other stuff not relate (even remotely) to starting. All these things have fixed their original problem but none have ever affected the cranking time. I even turn my key on and wait a few seconds before cranking to allow the fuel pressure to stabilize.

By contrast, my wife's Durango starts in a second or two tops. When warm/hot, takes a fraction of a second. I just assumed it was the nature of the Jeep beast. BTW, mine's the 4.0L six.

[crs46]

I have the same exact problem. If I let the jeep sit for longer than an hour, it takes a few seconds to start. If I only leave it for 30 minutes or less, it starts right away. Have you figured out anything else besides letting it just sit "on" for a little bit before starting?