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My car idles rough and lacks power - Ford Cars & Trucks

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  • Contributor
  • 18 Answers

Check your timing and your carb

Posted on Oct 31, 2012

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Posted on Jan 02, 2017

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SOURCE: rough idling lack of power

Try replacing the fuel filter.
Check for a vaccum leak

Posted on Apr 10, 2009

ghost4548
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P1520 Generator FR Terminal Malfunction Harness and connector
This is the definition of P1520

Posted on Jul 04, 2009

stevenhurc
  • 450 Answers

SOURCE: 2000 Daewoo Lanos intermittently idles rough

check throttle body and pcv hoses and ports for blockage possible carbon build up and sticky iac valve

Posted on Jul 20, 2009

beduncan
  • 73 Answers

SOURCE: running rough

If your car is running rough and it's fuel injected (which yours is). Follow the air intake (black plastic box - housing the air filter that has tubing that goes to the motor) until it reaches the Throttle body (rounded metal air intake at the end of the plastic tube - has one large flap inside). You will want to remove the hose clamp and thoroughly clean the throttle body and the AIC (air idle control valve - small canister attached to the throttle body). Use off-the-shelf cleaner from any automotive store. This takes about 30mins to 1hr depending on your skill level. This will result in a cleaner smother idle and smoother performance. This is a common issue in today's cars. I have to do this once a yr to keep my modified car running happy.

Take a look at the later parts of this article for pictures to give you an idea:

http://forums.nicoclub.com/zerothread/319146

Good Luck

Posted on Aug 07, 2009

  • 4 Answers

SOURCE: rough idle when cold and hot

have you replaced coil pack? Check EGR passage through upper mainfold and make sure clean. also make sure EGR valve not stuck part way open. Also check crank and cam sensors along with MAF.

Posted on Oct 19, 2009

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1 Answer

Rough idle when cold


Idle air control sensor or either mass air flow could be bad or going out.

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The car dies at stop and idles rough at low rpm


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A rough engine idle can come from a variety of causes. During the winter months, cars may have a harder time starting and will shake when first turned on. This form of rough idle can easily be mistaken for other problems. Engine idle problems can also be attributed to malfunctioning components, such as spark plugs. Holes in the air intake valve can also cause a rough engine idle because of excessive amounts of air being drawn in.
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Hi. I have a 99 camaro 3.8l and I'm having some


Sounds like a fuel problem,You did the coils,plug wires and sparkplugs, that should of taken care of the misfire,You may have a EGR that stay open and doesnt close properly and it doesnt set a code why the ECM compensate for the false air.Now this causes rough idle,and smooth cruise with no misfire until you get to stop or idle speed.The map sensor this can also fail when warm especially if the vacuum it is suppose to get is not met. And a failing MAP causes a lack of power. A TPS failing causes a stumble and lack of power but no misfire.cansmo_184.gif

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1 Answer

2000 Daewoo Lanos intermittently idles rough


check throttle body and pcv hoses and ports for blockage possible carbon build up and sticky iac valve

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2 Answers

Lack of power and rough idle


Is your "check engine" or "service engine soon" light on? Lacking power is usually an emission system problem, for instance possibly a bad EGR valve or mass air flow senser. O2 sensers are common to fault but normally doesn't cause power loss usually causes alittle rough idle. Could even be a pluged catalic converter to. have the truck plugged into a scanner, that will tell you the trouble codes and fault info.

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1 Answer

Rough idling lack of power


Try replacing the fuel filter.
Check for a vaccum leak

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