Question about 2003 Ford Taurus

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Low rpm at idel

Changed plugs-wirers cleaned entier intake system still low rpm at idel cheaked gas line and pump in tank still low rpm at idel

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Run engine and spray brake clean sparingly at the intake manifold, where it attaches to the head. make sure you let it dry after spraying each cylinder. if the motor starts to stumble, you need an intake gasket. you may also find a cracked vacuum hose

Posted on Jul 14, 2013

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  • Ford Master
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Is the check engine light on ? The computer uses the idle air control valve to regulate idle speed.

Posted on Jul 14, 2013

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Sounds like there is a vacuum leak. I's there a check engine light on? If so is there any lean codes?

Posted on Jul 14, 2013

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Posted on Jan 02, 2017

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SOURCE: Ford F100 Fuel System

how hard was it to pump it by hand?Iwould be suprised if a mechanical fuel pump could be easily pumped by hand as the spring pressure required to hold the arm against the eccentric is considerable If its a cleveland or windsor you cannot pump by hand.I own a 1980 running a cleveland and found that if you put an electric pump as close to the fuel tank as possible and have a good original mechanical pump fuel delivery is no longer a problem.I had to do this as soon as i went to a 600 holley as the original pump was not able to supply sufficient flow.the electric pump doesnt have to be an expensive hi volume type,it only has to help to get fuel to the mechanicl pump

Posted on Oct 09, 2008

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SOURCE: will not start after sudden braking at stop light, engin stalled

do you have spark?

Posted on Nov 30, 2008

SOURCE: missing while idel

It is probably a bad coil, have someone put it on a computer and see what cylinder is missing. The coils go bad all the time on the 5.4's

Posted on Dec 22, 2008

  • 6927 Answers

SOURCE: I have a 1994 2.0 litre 4 cyl GLEI telstar and

need to check throttle position sensor,or mass air flow,,,,u can try a aditive LUCAS fuel treatment,and 2 bottles of heet,with half tank of gas ,if it is the injectors ,and contamination it will clear it up

Posted on Jul 06, 2009

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SOURCE: have ford e-co-van 1 ton 350 series, 460 engine.1989

Ethanol really causes problems in cars that sit around.Thanks for us going green huh?It decomposes non-metal parts in the gas system.If the car sits around for something like 6 weeks the gas does go bad.You have to siphon the tank as much as possible.When filling up,add octane boost first then gas.It still may not work though.I did all that for a scooter and it still didn't work.So if you try it,when you add gas,probably only use 4 or 5 gallons,so you don't waste too much money if it doesn't work,and it is enough to mix the octane boost fairly well.Good luck bro'!That's all i have for now.And gas is gas no matter where you buy it.All those additives the companies claim clean this or that is just sales.Since fuel injection came out,companies are required to add a certain amount of detergent to keep injectors clean anyways.And 93 octane is not better than 87 octane enough to pay 20 cents more per gallon.

Posted on Jul 24, 2010

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1 Answer

93 Nissan TD27 diesel, changed fuel filter (dirty!!!!) engine idels fine but will not rev over 1800 rpm. Is there another filter in the inlet line of fuel pump

you may have a fuel tank strainer some sort of filter which filters the fuel coming out of the tank
not fuel filter more of a strainer type
see with your manufacture

Oct 08, 2017 | Nissan Cars & Trucks

1 Answer

I just replaced my intake gaskets and plenum gaskets,new plugs,cap,rotor,wires,refined the distributor. now I have an engine miss fire at low rpm speeds,what could be happening?

you more than likely have a dirty or bad injector in this situation, you can change your fuel filter and run a can of royal purple maxflow fuel system cleaner to a half a tank of gas if it is not too bad this will probably clear it up, if the low rpm miss is still there you need to bring it into a repair center and have a decarbonization done to the engine this will clean the injectors top end of the motor cataletic convertors and pretty much the intire engine

Aug 29, 2014 | Porsche 911 Cars & Trucks

2 Answers

Hard starting

It can be caused by a bad crankshaft sensor, plugged fuel filter, or clogged tank internal filter, as well as a failing fuel pump. Although the crankshaft sensor may not seem to be related to the fuel group, fuel demand is anticipated by counting the RPM's which is the crankshaft sensors job.
Now "hard to start" issues can be fuel pump pressure problems. But do not forget the "cold start routine" which requires a temperature sensor to set the engine management system for a cold start. It becomes less of a factor when the engine is warm but would not be responsible for low fuel pressure.
A simple test for vacuum leaks is to have the engine running and use a spray bottle of water on vacuum lines, intake gasket seams, EGR pod and the brake booster. A leak will reduce RPM or stall the engine.
For the internal tank filter, sometimes the plastic screen on the fuel pump deteriorates and clogs the pump intake. To test that, blow air into the fuel test port. This will help clear debris inside the tank temporarily, then check fuel pressure without driving the car and stirring the tank up. If pressure improves you know the root cause of your problems.

Jun 27, 2013 | 1997 Lincoln Mark VIII

1 Answer

My 95 7.3 turbo runs and idels good no miss but something is holdeing it back when u push the gas I have changed the fule filter and air

Here is what my Haynes Diesel Engine Repair Manual says for a noticeable lack of power, which is what you are describing.
1. Blocked air intake
2.Incorrectly adjusted timing
3.Blocked or damaged exhaust system
4.Obstruction in fuel filter
5.Blocked fuel tank vacuum vent in fuel cap
6.Insufficient fuel supply from tank to injector pump
7.Obstruction in fuel tank filter
8. Pinched or restricted fuel return line
9. Incorrect or contaminated fuel
10.External compression leaks ( glow plugs or injectors)
11. Obstruction in injector nozzles
12.Low compression
This book has an excellent diagnosis and repair section for your engine. It's Haynes part #10330 and costs about $20. Hope this helps.

May 27, 2011 | Ford F-350 Cars & Trucks

1 Answer

DPFE changed out burning smell

Check the fuel system, the pump and the fuel pressure regulator or Mass Air Flow Sensor. Evaporated emissions are the fumes that your fuel gives off. The pollution control system pulls them back into the intake to burn them off when you are running your engine. There is a vacuum line that is leaking between the fuel tank and the sensor that detects this or your gas cap is loose or leaking. It could also be a bad sensor which detects vacuum pressures from the tank. If everything has been check, then check inside the throttle by pulling off your Air pressure Intake then open the throttle by using screwdriver or any tools than can push in one the fuel control line to open, which is attach on the left side of the throttle. and if you look straight inside, you will see three hole. Then look by the bottom and you will see the two hole cover with black burned Oil. This means your fuel mixer (Throttle) is not pushing out air properly it gets clog , and the only way to get out is when you push the Gas peddle which is the burned gas will come all the way out to the Air Intake and it will circulate to any open area. If I was right about this! Your solution is to buy a Air Intake Cleaner or Carb-Throttle Cleaner. with the engine OFF, spray inside the throttle by using the red straw and point it to clean the two black clog hole. then wait for a about10 minutes or more to dry up cleaner after spraying the inside throttle. When you start the engine, black smoke will come out to the muffler. No worry this is normal to the engine, means the cleaner is burning and working to get out. Without cleaning the throttle body, the engine will soon stall, or stop without any giving warning light, because this means your A.C. Pressure Clutch and Idle Pully barring are NO longer working properly and maybe totally wormed out. You may also change the throttle position sensor. and check all your Gas and Oil Intake Hoses for a leak. hope this will help to solve your problem. P.S. You can also spray the Intake cleaner to your Intake Mass Air Flow Pressure Filter before putting it back to the throttle body.
If you have any more question you can email me at Take care and Good luck.

Feb 14, 2010 | 2001 Mercury Sable

1 Answer

Idel issue after air intake install

Your problem sounds like have air leakage from air induction system. I suggest you to re-check the gasket of Air Intake Manifold you installled or vacuum hoses for possible air leaking.
The easy way to check it, use Throttle Body or Carburator Spray Cleaner. Just spray around intake manifold where gaskets fitted and observe the idle speed, once the idle change or encrease, definetly there is air leak and you have check the gasket or replce it if necessary.
But if doesn't make change, I suggest you to check Idle Air Control Valve, check connector plug, lines and if you have donor unit try to do test part.
I hope you fix your problem and please update me whatever the result if you dont mind. Thanks

Jan 28, 2010 | 1999 Honda Civic

1 Answer

The car hesitates when pushing on gas at 4000 rpms

Hi, i recommend changing the fuel filter and pump. these devices are dirty or clogged with debris. I also would recommend adding a fuel tank and injectors cleaner to the tank once you have replaced the pump and filter. this will scrub the fuel lines and injectors as well. this will increase the fuel economy of the car and it will clean the fuel system thoroughly. you should notice an improvement after you apply these changes to the cars fuel system.

Make sure the wires and plugs are in good condition. if the wires are old or fouled in any way, replace them along with a new set of spark plugs. change the air filter also.

please rate and have a great day:)

May 18, 2009 | 2002 Ford Taurus

1 Answer

No power when accelerating

Once you rule out some kind of ignition problems,; spark plugs and wires, ignition timing, distrib. cap & rotor, the cause may be low fuel pressure from a failing pump or clogged filter. Listen to the pump in the gas tank. If its been getting louder lately, have the pressure tested.

Jun 26, 2008 | 1992 Suzuki Sidekick

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