Question about 1996 Jeep Cherokee

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

Posted on Mar 06, 2009


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My 1990 olds cutlass supreme will not stay running it has fuel and has spark. It will start then dies immediately. Any tips has brand new fuel pump

It could still be a fuel problem. The only way to be certain is to put a fuel pressure tester on it. Autozone may rent or loan fuel pressure gauges. Easy to hook up to the shrader valve on the engine fuel rail and test fuel pressure. With key on, pressure must be over 40 psi, 40-44psi is what is called for. If pressure drops below 40 after it starts, then you know it was a fuel problem. Either the fuel filter is clogged, or the pump quits because the oil pressure switch is faulty. That switch is tied into the pump circuit, keeps the pump running after the engine is running.

If fuel pressure stays good, maybe problem is in the ignition system. Have the Ignition Control Module tested, also the crank position sensor.

Feb 17, 2016 | 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

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Car dies once it warms up

You hook up a fuel pressure gauge to the test port on the engine's fuel rail, and see if the pressure is correct with what is specified for the car. If the pressure is correct, the pump and filter are good, doing what they are supposed to do. Some stores loan or rent fuel pressure gauges. Multiport fuel injection systems usually have high pressure requirements-about 40-50 psi. Check the specs for your car. Usually, the specs call for a pressure with just key on, no start, and a second pressure (maybe 3-10 psi lower) with the engine running.

When it dies, can you immediately restart it, or do you have to wait a bit? Probably fuel or spark related, Any trouble codes present?

Aug 16, 2014 | 1995 Nissan Sentra

1 Answer

My wrangler is gasping at 40 mph and idling higher when this happens

Check fuel pressure, the fuel pressure should be about 49psi ( + or - 5 psi).

Mar 19, 2012 | 2004 Jeep Wrangler

1 Answer

When I start to go the car goes but if I punch it or just put the pedal down a ways it starts to sputterish. When in park and push the pedal down, even slowly, it sounds like the engine is up, down, up,...

Is the check engine light on?

I would first inspect the air filter, change it if it appears to be dirty.

Next, I would check the fuel rail pressure with the vehicle running at approx. 2000 rpm. If the pressure doesn't stay around atleast 40 psi I would change the fuel filter, if that doesn't increase the psi then I would check the fuel pump and relay.

Then I would change the spark plugs.

If that doesn't fix the problem you will need to start checking the ignition system and the sensors.

Post your results.

Mar 05, 2011 | 2003 Ford Crown Victoria

1 Answer

Mustang stalls when trying to drive and will shut down

Measure fuel pressure on injector rail - should be 38 to 40 psi. If low or fluctuating, then replace regulator. Another possibility is the in-tank filter being clogged - rare I know, but trash in the gas tank and it's clogged.

May 13, 2010 | 1986 Ford Mustang

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


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.

Jul 12, 2008 | 1996 Jeep Cherokee

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