Question about 1995 Jeep Grand Cherokee

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Fuel losing fuel pressure

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Check your fuel filter first than it looks like a replacement of fuel pump is in order.

Posted on May 25, 2009

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What would cause you to lose fuel pressure while driving.


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Why is my 1987 ford ranger acking iike its loosing fule pressurs win diving


It may BE losing fuel pressure, Robert. Check the fuel pressure and flow rate at the fuel rail. Filter, plugs, and cap have nothing to do with fuel pressure - your fuel pump and pressure regulator are the only things that can change fuel pressure very much.

Aug 08, 2014 | 1987 Ford Ranger

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Rav4, 2003 model, loses power when climbing mountain, only 2000 rpm is reached


Possible low fuel pressure or restricted catalytic converter. Have fuel pressure and exhaust back pressure checked.

Jan 05, 2014 | 2002 Toyota RAV4

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2003 Town & Country hard to start. Once it's starts it will start every time . Wait a few minutes then it's hard to start. Must turn over three or four time to start.


It sounds like possibly a fuel pump issue. The pump may be losing its prime because of a sticking check valve in the pump. Instal a pressure gauge and watch the fuel pressure after shutting the car off. The pressure should not completely drop off it should only drop a few pounds. If it loses more than a few pounds of pressure quickly then it may need a fuel pump. This can also be caused by leaking fuel injectors so further diagnosis is needed to find the source of the leak

Oct 22, 2013 | 1997 Ford Aerostar Extended

1 Answer

97 caravan stumles when you give it gas


Very likely a low fuel pressure problem. Have you changed the fuel filter? Check the fuel pressure against vehicle spec's while running at idle and again at about 3000 RPM. Also check pressure with key on/engine off. If you lose pressure between idle and higher RPM's you probably have a weak fuel pump. Same goes for if you lose pressure after initial key on/engine off. You could also have a problem with a weak ignition coil, spark plug wires or spark plugs but not as likely.
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Dec 24, 2012 | 1997 Dodge Caravan

1 Answer

My truck wont start when it is cold, i checked the fuel pressure and it reads 52 lbs. When the truck is warm it will start everytime. Oil pressure gauge is reading low, but the dipstick reads full.


When are you taking the fuel pressure reading? After it has sat for awhile or right after you shut the truck off when you get it running? Have you tested the pressure right before you try to start it cold?

I would check the pressure right after shutting the truck off, then wait an hour and check it, and once again after another hour. If you lose fuel pressure then you either have a bad fuel pressure regulator or you have a loose fitting / cracked line or some problem that allows air in the fuel line causing the fuel to syphon back to the fuel tank.

The next time you try and start it cold, turn the key to the on position and listen for the fuel pump whine to stop, then turn the key off and repeat above step 2 or 3 more times. If it is losing pressure, then doing that will build your fuel pressure back up and it will start.

Check the pressures and report back your findings.

Dec 02, 2009 | 1999 Chevrolet K2500

1 Answer

Fuel pressure


could be, fuel filter,pump,relay, turn key on but dont start, do you here the pump? should run bout 2-3 sec then shut off. if its really losing pressure while running, its most likely ur pump..

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1 Answer

1985 Ford Pickup Loses Fuel Pressure then dies


The fuel pump relay, which is probably by the other relays under the hood by the big fuses, can surely be tired after all these years. Don't buy an off brand, I had one of those stick ON!

Apr 17, 2009 | 1989 Ford F 250

1 Answer

I have a 1990 suburban 4wheel drive. when I start the car it runs for five minutes and then dies out. changed the pickup module in the distributor. changed the coil pack, plugs, wires, distributor cap. the...


Put a fuel pressure gauge on it and watch it to see if when it dies you are losing fuel pressure. if you dont lose pressure then that eliminates the fuel system

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