engine wont turn over

Jas0n · 11-05-2009, 11:46 AM

We had a problem yesterday where our gc would not start. The starter would crank but there was no fuel getting to the engine. I checked the injector harness with a noid-light set and got the steady flash. I also pressed the valve on the fuel rail and got no fuel. The weird thing is that when I was walking to my truck to go to school today I stopped and tried to start it. It coughed to life but was running rough. It eventually smoothed out enough so I could take it around the block. It is still not running normally..... any ideas?

ET JEEP · 11-05-2009, 03:16 PM

When you turn the key to start, you should hear the fuel pump run for a few seconds. Listen in the fuel tank area. If you do not hear it, check your fuel pump relay. Also, attach a fuel pressure gauge and check for normal fuel pressure.

If you have a high mileage vehicle, you might clean the throttle body and attached components. The IAC controls idle and it is on the TB.

troy fritz · 11-05-2009, 03:56 PM

Try replaceing the fuel filter. If its been a while then no big deal cuz you needed to do it anyway.

rickybarth · 11-05-2009, 08:37 PM

where is the fuel filter i have to repace my fuel pump cause my check valve went bad so i should do the fuilter too....any ideas if the check valve is a common problem it was good until i ran fuel system cleaner through it

ET JEEP · 11-05-2009, 09:56 PM

On the 1997 the fuel filter is part of the fuel pump assembly.

rickybarth · 11-06-2009, 05:53 AM

ohh is the fuel pump hard to change in a 97 zj

troy fritz · 11-06-2009, 11:47 AM

On a 94 its behind the rear tire on ds under jeep.

troy fritz · 11-06-2009, 11:48 AM

Quote:

Originally Posted by rickybarth

ohh is the fuel pump hard to change in a 97 zj

Not bad to do . Plan on new tank straps. That old they will proly break or just about.

troy fritz · 11-06-2009, 11:49 AM

Quote:

Originally Posted by ET JEEP

On the 1997 the fuel filter is part of the fuel pump assembly.

Thats correct.

Jas0n · 11-09-2009, 12:09 AM

there is no sound coming from the tank... the fuses are good, the relays are good <including the auto shutdown relay>, i just replaced the iac and it is still doing the same thing, I replaced the fuel filter a month or two ago, so it couldn't be that.

11-05-2009, 11:46 AM	#1
Jas0n Newbie Join Date: Nov 2009 Location: salem, oregon Posts: 14 My Photos 1994 Grand Cherokee Year: 1994 Model: Grand Cherokee Engine: 5.2 Litre V8 Transmission: AOD Transfer Case: -stock- Front Axle: -stock- Rear Axle: -stock- Lift Specifications: -none- Misc Accessories: fog lights	engine wont turn over We had a problem yesterday where our gc would not start. The starter would crank but there was no fuel getting to the engine. I checked the injector harness with a noid-light set and got the steady flash. I also pressed the valve on the fuel rail and got no fuel. The weird thing is that when I was walking to my truck to go to school today I stopped and tried to start it. It coughed to life but was running rough. It eventually smoothed out enough so I could take it around the block. It is still not running normally..... any ideas?

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11-05-2009, 03:16 PM	#2
ET JEEP Member Join Date: Sep 2009 Location: East Texas Posts: 204 My Photos 1997 Grand Cherokee Year: 1997 Model: Grand Cherokee Engine: 4.0 Transmission: 42RE	When you turn the key to start, you should hear the fuel pump run for a few seconds. Listen in the fuel tank area. If you do not hear it, check your fuel pump relay. Also, attach a fuel pressure gauge and check for normal fuel pressure. If you have a high mileage vehicle, you might clean the throttle body and attached components. The IAC controls idle and it is on the TB.

11-05-2009, 03:56 PM	#3
troy fritz Senior Member Join Date: Jul 2009 Location: Ravenna , Ohio Posts: 856 My Photos 1996 Cherokee Year: 1996 Model: Cherokee Engine: 4.0 HO Transmission: 3 speed w overdrive Transfer Case: NP231 Front Axle: D30 Rear Axle: chrysler8.25 Tires: 31x10.50 Super Swamper SSRs Lift Specifications: 3in RC lift and 1.5in coil spacers Misc Accessories: tc,gas tank skids,Cowl snorkel	Try replaceing the fuel filter. If its been a while then no big deal cuz you needed to do it anyway.

11-05-2009, 08:37 PM	#4
rickybarth Member Join Date: Oct 2009 Posts: 123 My Photos 1997 Grand Cherokee Year: 1997 Model: Grand Cherokee Engine: 4.0 Transmission: 42re Transfer Case: np242	where is the fuel filter i have to repace my fuel pump cause my check valve went bad so i should do the fuilter too....any ideas if the check valve is a common problem it was good until i ran fuel system cleaner through it

11-05-2009, 09:56 PM	#5
ET JEEP Member Join Date: Sep 2009 Location: East Texas Posts: 204 My Photos 1997 Grand Cherokee Year: 1997 Model: Grand Cherokee Engine: 4.0 Transmission: 42RE	On the 1997 the fuel filter is part of the fuel pump assembly.

11-06-2009, 05:53 AM	#6
rickybarth Member Join Date: Oct 2009 Posts: 123 My Photos 1997 Grand Cherokee Year: 1997 Model: Grand Cherokee Engine: 4.0 Transmission: 42re Transfer Case: np242	ohh is the fuel pump hard to change in a 97 zj

11-06-2009, 11:47 AM	#7
troy fritz Senior Member Join Date: Jul 2009 Location: Ravenna , Ohio Posts: 856 My Photos 1996 Cherokee Year: 1996 Model: Cherokee Engine: 4.0 HO Transmission: 3 speed w overdrive Transfer Case: NP231 Front Axle: D30 Rear Axle: chrysler8.25 Tires: 31x10.50 Super Swamper SSRs Lift Specifications: 3in RC lift and 1.5in coil spacers Misc Accessories: tc,gas tank skids,Cowl snorkel	On a 94 its behind the rear tire on ds under jeep.

11-09-2009, 12:09 AM	#10
Jas0n Newbie Join Date: Nov 2009 Location: salem, oregon Posts: 14 My Photos 1994 Grand Cherokee Year: 1994 Model: Grand Cherokee Engine: 5.2 Litre V8 Transmission: AOD Transfer Case: -stock- Front Axle: -stock- Rear Axle: -stock- Lift Specifications: -none- Misc Accessories: fog lights	there is no sound coming from the tank... the fuses are good, the relays are good <including the auto shutdown relay>, i just replaced the iac and it is still doing the same thing, I replaced the fuel filter a month or two ago, so it couldn't be that.

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