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Ford e150 inline six. idle speed changes every few seconds. Year 1989 4.9 liter fuel injected 1) Replace fuel pump 2) Replaced fuel filter 3) Timing is correct

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  • paule641 Sep 08, 2010

    Hi! Sorry I could not wait for advice. Tested the EGR valve, This valve was the problem.
    It was sticking under load. It should close when in idle. Under load it's open. This valve was not closing all the way. Idle speed was eratic. This little gem cost's about $375.00 for my ford van.
    After replacement, idle speed was stable. Note: This problem was solve by me! I have studied
    auto engines in the past. This was a long drawn out process. I studied on it for a week before I found the solution. I am currently a Tv service technician. Modern TV, LCD, Plasma, DLP. Well good luck out there...



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Posted on Jan 02, 2017

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SOURCE: fuel injection idling to high

Try this: Remove the rubber pipe that goes to the throttle plate at the end of the intake manifold. Open the throttle flap valve and inspect the interior for excessive carbon buildup (black gunk around the flapper and the outer circular bore)...If it is dirty, get some carb cleaner & spray the daylights out of it until it is clean clean clean. Reattach the tube and start the engine, it will smoke quite a bit until all of the cleaner in the intake is digested by the engine. This should improve the idle. What may be happening is the black gunk may not be letting the throttle valve to close fully, and WILL keep the idle up.

Posted on Sep 19, 2008

  • 298 Answers

SOURCE: Carburator idleing problem

make sure the choke is not sticking half closed.

Posted on Oct 02, 2008

  • 6 Answers

SOURCE: 1989 Bronco starts but dies after a couple of seconds

try checking the thermostat control senser. it caused my bronco to start for a second and then die. after a while it would finally start and run for a while then die driving down the road. i changed the thermostat control senser and it fixed all problems of dieing

Posted on May 10, 2009

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SOURCE: camshaft timing mark crankshaft timing mark

Belt covers need to be on. Timing mark on crankshaft (while on compression stroke) should line up with TDC mark on cover. then Camshaft mark, needs to line up by looking through access hole of cover, and align mark on cam sprocket with pointer on inside of belt cover.

Posted on Oct 22, 2009

  • 389 Answers

SOURCE: i have a 1989 jeep cherokee 4x4 with a 4.0 inline ...

could be low on fluid or could be the tps(throttle position sensor)

Posted on Jun 12, 2010

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2 Answers

A 460 engine that acts like its not getting enough fuel. Will start but runs as if only on half the cylinders missing badly or such.

Check your running fuel pump pressure. If (as I suspect) it's too low, first try changing your fuel filter. After changing the filter, recheck the running fuel pump pressure. If still low, check you fuel pump pressure regulator. If OK, you may need a new fuel pump.

Also probably would be a good idea to replace you air filter.

Good luck!

Jan 09, 2011 | 1990 Ford F250

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I have a 94 Jeep Cherrokee Sport with a 4 liter inline 6. With fuel injection and manuel 5 speed. It starts and runs good at idle, but when you press on gas it spitts and spudders. Then eventally spudders...

Have you replaced the crank sensor? There isn't really any way to test it, however it isn't expensive and it is fairly easy to replace. Good luck.

Sep 25, 2010 | 1994 Jeep Cherokee

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Engine dies when first try to crank it up..idling rough.

Step 1. Change your fuel filters. You should have one at the throttle body on top of the engine, and one inline near the gas tank under the car. There is the possibility that you only have one filter though, so if you look hard and only find one, don't panic.

Step 2. Check to make sure that you fuel pump is working correctly by removing the line coming from the throttle body to see if gas comes out easily. If it is slow to come out or not much comes out, you need to replace your fuel pump.

Step 3. Check your spark system. Plugs, wires, distributor.

Doing a general tune up including a new timing belt, some fuel injector cleaner, new battery and always getting the same type and quality of gas every time will help overall

Nov 11, 2009 | 1989 Ford F 150

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need to check fuel pressure when this happens. May be a fuel pump. Could be many things

Jul 17, 2009 | 1989 Ford Econoline

2 Answers

1993 Explorer replaced six fuel pumps in 6 months

Did you change your fuel filter ? if you have a bad fuel pump and install a new one whit out changing the fuel filter.
tad can cause the new fuel pump to go bad.
always replace the fuel pump strainer and fuel filter on the same time you change the fuel pump.

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replace fuel pump /fuel filter/screen/keep enough gas in tank at least 1/2 tank of gas at all times and change gas filter at 10,000 miles

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1996 tarus

There is a pump pre-filter screen, and an inline filter. Are you replacing them both? If not you MUST! Also you should service your fuel filter once a year OR MORE! For your vehicle the fuel system is a return-type system. Your pump supplies a specific volume of fuel to the injectors at a high pressure. All of that fuel is not injected into the engine, and the remainder is returned to the tank by the return line. This cycle repeats at such a rate that each tank full of fuel is passed through the filter about ten times before that tank is consumed. Fuel quality and cleanliness is vital to the health of the pump, but there is another important consideration that FEW people know... That fuel pump gets really HOT! The only thing that cools it is the fuel in the tank. If you routinely run your car at 1/4 tank or below, your pump is always above the fuel level in the tank, and it gets NO COOLING! Hot pumps have a short life! Keep your fuel level above 1/2 a tank and the fuel pump life will double, or even triple! (In your case it might last 5 times longer)

Oct 26, 2008 | 1996 Ford Taurus

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