Question about 1996 Jeep Cherokee

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Starting my jeep is not starting it is get spark compresson but no fuel it has fuel pressure at the rail 40 psi but i know that is not enough i change the fuel filter it was the stock one it was nasty and it will not start still

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You will need to obtain a noid light tester to check you have power to your injectors and that they are working. if not working check the relays swapping them around with the same ones in your relay box can show up a bad one.dont swap with the ignition relay as you say that circuit is working.if those checks work out ok it is probable that the pump is by passing .If you block off the fuel return line at the rail with a pair of pliers and it tries to fire then it is definitly the pump or blocked fuel pickup.

Posted on Oct 09, 2008

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What would make a not start unless I pour gas into intake


Hi Clyde:
Since you mention "gas rail" I'm assuming fuel injected.
I'd check the fuel pressure in the rail. Should be around 40 PSI.
If pressure is OK then injectors not working. Time to check cps.
You know the spark side is OK since it will run.

Nov 08, 2015 | Cars & Trucks

1 Answer

I have a 1995 jeep sport it crank but wont turn a lot of people tell it could be fuel pump it could I really dont know it I need answers


If it cranks at normal speed, it could be the fuel pump or loss of spark. Autozone has a loan-a-tool policy. Pretty sure you can borrow or rent a fuel pressure gauge to see how good your pump and fuel filter is. Just hook it up to the test port on the engine's fuel rail, and turn the key to on, not start. It should immediately show about 40 pounds of pressure- 40 psi. If it is good, then it is probably an ignition problem, and you need to check for spark on a spark plug wire.

If the test shows no pressure, then the pump may be bad. It is not turning on, for sure. A final check before replacing the pump is to check that the pump power wire at the fuel tank connector has power on it with the engine cranking over. If it has power there when cranking, the pump circuit is good (all fuses and relays good). The fuel pump itself is the problem.

On that model jeep, if it is a Cherokee Sport like my son's '95 jeep, it is quite easy to change out a fuel pump. You don't have to drop the gas tank to replace the pump. The assembly goes into the gas tank at the front upper part of the tank, above and just back of the rear differential. I changed out the fuel pump on his jeep in a K-mart parking lot in a little under 2 hours. Wiggling and twisting the assembly out of the gas tank hole for removal was the most time consuming part. It was really quite easy. If you have ever replaced a pump before, .the jeep is a breeze.

Jan 09, 2015 | Jeep Cars & Trucks

1 Answer

2004 ford explorer will not start but turns over


For a no start , cranks over ok. be sure you have fuel pressure at the fuel rail first, before checking the injectors. There should be more that 40 psi at the rail... if not .. you might have a fuel pump problem. Even if you have fuel pressure at the fuel rail... the next thing I would check for,,, is spark !! Make sure you have spark at the spark plugs. The order would be... fuel pressure first and then spark , , then injector pulse. !! Then plugged exhaust.... then bad fuel then engine timing. The injectors have power to them all the time. The PCM controls the ground to the injectors. So you would have to monitor the ground side of the injectors. So checking injectors is kinda complicated. Hope this helps you. Good luck.

Mar 03, 2013 | 2004 Ford Explorer

1 Answer

It cuts off and wont start right away


Next time it does it check if it has spark, if it don't I would check your crank sensor and pick up coil. Also make sure you can hear the fuel pump in the gas tank running so you know that the pump is working. It would be best if you had a fuel pressure gauge it should have at least 40 psi at the fuel rail with the key on. If not that could be an idication of a bad fuel pump causing it to vapor lock.

Nov 05, 2010 | 1996 Jeep Grand Cherokee

3 Answers

2002 ford ranger will not start. I know voltage is at the spark plug and I can hear the fuel pump prime when the ignition is turned.


First is voltage at spark plug strong enough the way to tell is by color and distance. The spark at the plug wire should jump about 1 1/4 to 1 1/2 inches and be mostly blue in color. If your get either of these condition from a check your found your problem . If the electrical check turn out ok check you fuel pressure normal pressure is usually 40 psi or greater . autozone may lend you pressure tester and may have a spark gap tester

Oct 04, 2010 | 2002 Ford Ranger Regular Cab

1 Answer

Fuel pressure


30-45 psi with the vacuum hose attached to the regulator
40-50 psi not attached

Jun 01, 2010 | 1996 Ford Explorer

2 Answers

1997 gmc suburban 5.7L will not start. it has fire and 40 psi fuel pressure


i would check the cap and rotor if it has spark and 40 lbs of fuel pressure if cap and rotor are ok check for injector pulse thats the only other thing it can be

Oct 31, 2008 | 1997 GMC Sierra K2500

1 Answer

Fuel


40 psi is the right fuel pressure for that jeep. I would steer towards a bad crank sensor on the bell housing.

Jul 12, 2008 | 1996 Jeep Cherokee

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