Question about 1995 Jeep Wrangler

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Slow starts I have replaced the fuel pump twice, the fuel relay, the fuel filter and the regulator. I still have to turn the key on and wait for the relay to stop clicking before it will start.

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Injectors stoped up

Posted on Aug 25, 2008

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1999 chrysler 3.5 lhs fuel not going to injectors


Then your fuel pump is not working, or your fuel filter is blocked. You will probably have to check your fuel pump circuit if you have no fuel pressure in the fuel rail, where the injectors sit. There is a fuse for the pump, usually in the under hood fuse/relay block. That is probably also where the fuel pump relay is located. You should hear or feel this relay click when the ignition key is cycled from off to on. Also, when the key is turned to on, you should hear the fuel pump in the gas tank turn on for about 2 seconds. This will put the pressure in the gas in the fuel rail, for starting the engine. If you don't hear the pump turn on for that 2 second period, it is probably a bad fuel pump. But know the fuse is good first.

Sep 25, 2015 | Chrysler Cars & Trucks

1 Answer

Why after replaced fuel pump and filter and relay the pump will cycle when the key is turned but won't start. It will do this twice and then the computer has to be reset. Then the pump will cycle ag


The engine computer must see oil pressure or engine RPM to turn the pump relay on. Otherwise you only get power from the relay when the key switch is first turned on.
You could try to bypass the pump relay to see if the engine will run.

Sep 14, 2014 | 1994 Plymouth Sundance

1 Answer

Where is the location of the fuel pump relay switch in a 1999 gmc sonoma


SLOW DOWN THE FUEL PUMP WILL POWER UP BY ECM FOR 15TO20 SEC SO KEY OFF WAIT COUPLE OF MIN NOW HAVE SOME ONE DO KEY ON ONLY.YOU LISEN TO PUMP.IF NO PUMP NOISE. YOU NEED TO RECHECK YOUR WIRING THAT CAME WITH NEW PUMP IF WIRING IS GOOD RETEST BUT CHECK POWER AND GROUNG IF POWER AND GROUND ARE GOOD. BAD PUMP OR WIRING WRONG.RELAY BOX HAS RELAY AND FUSE FRONT OF TRUCK

Feb 14, 2013 | 1999 GMC Sonoma

2 Answers

1997 chevy blazer truck won't start no nosie from fuel pump chang


Replace the fuel filter. It should be in line with the fuel pump on the inside of the frame on the driver's side forward of the pump. There should be 1 or 2 bolts securing the bracket in place. Leave them tight and remove the fittings on the front and rear of the filter. Fuel will begin to leak from the lines as you loosen them so keep you face safely away from that area. Once the fitting nuts are backed out completely, remove the bracket bolts and then the filter. Reverse the steps to reinstall.

May 15, 2010 | 1997 Chevrolet Blazer

1 Answer

FUEL PUMP REPLACED TWICE..NEW CAP, ROTOR,WIRES,PLUGS AND FILTER. INITINAL START UP REQUIRES EXCESSIVE SPIN OVER. WHAT CAN CAUSE THIS CONDITION ON A 98 4.0 FUEL INJECTED JEEP?


could be the fuel pump relay, do you hear the pump prime when you turn on the key? if not then replace the fuel pump relay.

May 13, 2010 | 1998 Jeep Cherokee

3 Answers

Where is the fuel relay located in Mazda mx6 1988?


On that one it actually called circuit opening relay under left side of dash in fuse relay box


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Feb 08, 2010 | 1988 Mazda MX-6

1 Answer

1996 Toyota T-100 start up problem. Cranks over twice then you hear pump relay or pressurize switch in engine compartment click, then it turns on. Would it be my fuel pump relay, oil pressure switch gone...


Try checking the fuel pump relay see if it's carroded if it is then sand it, normally the fuel pump relay should come on first. also check that you battery terminals are clean. Be sure to test the pump to turn the key to the run postion first listen to see if the pump runs, if it dosen't then you need to fid out why, also have you changed the fuel filter? Just a thought even if the pump runs if the filter is plugged you may have a slow start condtion because of this.

Aug 11, 2009 | 1997 Toyota T100

1 Answer

I have a 99 suburban that has 203,000 miles. It has developed a problem of taking a while to start. I have replaced fuel pump twice, the latest was about 3-4 years back. I have not checked pressures but...


I believe you have a fuel regulator weak or dirty injectors.
Try turning the key to the "on" position ( do not try and start) wait until fuel pump stops running (3-5 seconds or so ), turn the key off and immediatly repeat for 3 cycles. On the 4th key rotation, start the vehicle. Does it seem to start up faster?
If so, the regulator is weak, however, the fuel pump does have a check valve in it to prevent fuel from leaking back into the pump and maintain line pressure.
Try the diagnostic proceedure above first and we can go from there.
Good luck, let me know.
Regards,

Jul 15, 2009 | 1999 GMC Suburban

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