90 Ranger no power new fuel pump, UGH - Ranger-Forums - The Ultimate Ford Ranger Resource


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Old 07-26-2014
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Location: n olmsted,ohio
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90 Ranger no power new fuel pump, UGH

Having a problem with my 90 ranger xlt 4x2 5spd. 2.3L
I can not get it faster then 45-50.in 5th then when I came to a stop it will idle and stay running.I also noticed that I have to feather gas pedal to get it up around 3k rpm. I changed wires and plugs ,
its like its starving for fuel.I checked and checked the filter and it throws out fuel for 3 seconds when I turn the key on so I guess the fuel is working as it is flowing fuel. the only thing I know for sure is that the filler hose back to the tank hasd cracks as it leaks gas when I put gas from a can! they want $184 for a new hose ?!WTF
i doesnt have a whole lot of power but it will get up to 65.
Now its like if I push fast on the pedal it starts spuddering/popping and if I try to push pedal to WOT it starts popping and shuddering immediately and struggles to get rmps up to 3k.Doesn't want to go over 3k without feathering and easing pedaI. I can ease it up to 3k but takes feathering and slow pedal movment. I know the filler hose leaks fuel if I fill it out of a can and ive changed the Air temp sensor 5 days ago with no change and then the Throttle position sensor 3 days ago and it ran IREDIBLE for 10 minutes then got even worse, so bad I could only drive in idle to get home which took 2 1/2 hours from a 25 minute commute. UGH Please help

Last edited by stef; 07-26-2014 at 07:35 PM.
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Old 07-27-2014
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I would get or rent a fuel pressure gauge, so you can either find out if that's the problem or move on to something else.
Fuel pressure should be 30-45psi, during the test run engine at 2,000rpms for at least 1 minute to see if pressure is holding.

Fuel pressure is set by the Fuel Pressure regulator(FPR) on the fuel rail, it has a vacuum line attached, and 2 fuel lines, IN from filter/pump and OUT-return to fuel tank.
It has a spring to hold the OUT passage closed when engine is off(fuel pump has a check valve to prevent fuel from drain back into the tank).
When you start the engine and it is idling the Vacuum in the intake is highest, so FPR vacuum line pulls open the spring valve and extra fuel flows back into the fuel tank.
As engine RPMs increase the Vacuum drops and spring valve closes.

Remove this vacuum line and check it for fuel or fuel smell, if there is fuel then FPR rubber diaphragm is leaking, replace FPR.

Plug the vacuum line with a screw or bolt, so no vacuum leak, start engine, make sure no fuel is leaking from vacuum port on FPR.
Fuel pressure should be 45psi or higher, if not then FPR is not closing OUT valve all the way, replace FPR.
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Old 07-27-2014
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thank you so much for your reply

my cousin brought over a pressure tester and ohm meter to check injectors then while on a test drive the timing belt broke lol its been like this for a month since I bought this wreck that sat for a lot longer than 6 months like they said after it was supposed to be running for 500 but it wouldn't start and needed a fuel pump, after that job I swept up 12 lbs of rust from using the impact gun LMAO welcome back to Cleveland thanks again
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Old 07-28-2014
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Stretched timing belt would lower compression and that would explain the lack of power
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