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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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SOURCE: Rough Idle 2000 ford Taurus OHV

This could be a bad a/c compressor or compressor pulley bearing.Try removing the serpentine belt and turning the compressor by itself.The bearing should turn very easily,and the compressor itself should turn.If it is vety hard to turn,it is bad.

Posted on Sep 25, 2008

  • 1 Answer

SOURCE: Very High Idle speed

no prob not and i had the exact same problem and bought the part from advance auto it was like $80 and it's a diy thing i'm an 18 year old female and could do it my self just need the part and 6 star screw's right there on the right side when you open the hood

Posted on Mar 17, 2010

  • 30 Answers

SOURCE: 1995 Eagle Talon Will not start

check the mass air flow sensor, if this is bad then the ecu wont get a signal and it wont send the right amount of fuel to the cylinders causing a no start condition

Posted on Mar 19, 2010

  • 252 Answers

SOURCE: 1998 subaru rs impreza 2.5


Usually a vacuum leak will make the idle bog down rather than speed up, even if the ECU is compensating. It will be rough, but as you say, it's fine through the revs.

This leads me to think the PCV (postive crankcase valve) is not connected or is leaking. This raises the idle, although the ECU will suspect the IAC to be the problem. Check the PCV valve first.

Check the MAF sensor for dirt too.

Another point to make is the throttle body might be clogged/dirty. Get the intake manifold off again and clean it with petrol/carb cleaner and a toothbrush, check the condition of the rubber seals, if they are gunked up, the air speed will increase, causing a high idle. Check the exhaust manifolds for any build up/rust.

Finally, when were the O2 sensors last changed? If recently, are they the right way around? If not recently, try those, but make this the last resort as they can cost a lot.

I hope I have covered every eventuality as I can see how annoying this is for you. As you already mentioned, reset the ECu after each attempt.

Good luck, fire any questions back if you need.

Posted on Jul 18, 2010

  • 2272 Answers


Both the error codes mentioned are related to your problem.

Get both the things checked.

If checked faulty replace the faulty part

Code 25..... Idle Air Control (IAC) motor circuits. A shorted condition is detected in one or more of the IAC motor circuits.

So first check the IAC .

The Idle Air Control Valve motor is bolted onto the throttle body . Its tan or black in color, and takes two screw to take out. Check the IAC valve motor (OK means idle speed fluctuates or motor sound can be heard). If no, check the idle air control motor circuit. If yes, check the throttle body minimum air flow.

Poor connection at PCM or IAC motor. Inspect harness connectors for backed out terminals, improper mating, broken locks, improperly formed or damaged terminals, and poor terminal to wire connection.
Damaged harness. Inspect the wiring harness for damage.
Restricted air intake system. Check for a possible collapsed air intake duct, restricted air filter element, or foreign objects blocking the air intake system.
Throttle body. Check for objects blocking the IAC passage or throttle bore, excessive deposits in the IAC passage and on the IAC spindle, and excessive deposits in the throttle bore and on the throttle plate. Check for a sticking throttle plate. Also inspect the IAC passage for deposits or objects which will not allow the IAC spindle to fully extend. If all checked ok then replace the IAC.
You can unplug the IAC or even remove it from the throttle body and plug up the whole and see if the problem goes away. In most cases the IAc needs to be replaced.

Code 11..... Intermittent loss of crankshaft and/or camshaft position sensor signals to PCM, complete loss of crankshaft position sensor signal to PCM, or timing belt skipped one or more teeth.

The crank positioning sensor is located on the oppisite side of the block as the timing belt.

The camshaft sensor You should remove the top timing belt cover and see it.

Check under the INTAKE cam gear. The plugs for it should be right around there as well. There's a black rectangular one and a grey triangle one.. I believe the grey one is the cam sensor.

Thanks. Keep updated for any more query. You can rate this solution and show your appreciation.

Posted on Sep 25, 2010

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Cleaned throttle body on chevy 03 1500. Now has high idle about 1200 rpm and surges up and down?


Check the following in order:

IAC valve wiring, connectors and vacuum hoses.
Look for vacuum hoses that are not connected in general.
EGR valve wiring, connectors and vacuum hoses.
PCV system.
Wiring to the two sensors in the air intake.
Check position of the air intake for leaks. Tighten its screws.
Check wiring in general.
Do a code scanning if you have not found anything so far, check wiring of ECM and O2 sensors.

If the car idles up and down there may be an air leak from air intake or IAC, EGR, there may be a vaccuum leak or PCV system may be malfunctioning. Those are the things to check first and with more attention.



Sep 19, 2011 | 2003 Chevrolet Silverado 1500

1 Answer

'93 chevy S-10 Blazer 4wd (automatic) high idle & I have already replaced the idle air control/throttle positioning sensor & have checked for vaccuum leaks. (none of the above have fixed the...

dont know if this will help but have you replaced the coolant sensor (by the thermostat ) and the pigtail that connects it to the wiring also the map sensor may be part of the problem my 92 s10 did some what of the same thing and I replaced the temp sensor and that didnt fix it untill I put a new pigtail that connects to the wireing my son had a blazer that also did that I think ( its been a while ago ) and we replaced the map sensor and that fixed it

Sep 17, 2011 | 1993 Chevrolet S-10 Blazer

1 Answer


This code indicates a large leak in the EVAP system ( Vaccuum Leak ) you will have to locate a broken vaccuum line or check EVAP canister for a leak or crack. You can also take it to a garage that has a smoke machine and what they do is hook the machine up to your EVAP system it blows white smoke in and it will come out at the point where it is broken or leaking.It might be worth the money to have this done because it can be a nightmare to find a vaccuum leak and this way it only takes about 10 seconds and they usually don't charge much for this test.

May 02, 2011 | 1998 Chevrolet Camaro

1 Answer

2000 focus rough/surging idle tried sensors vaccuum leak ?

(Idle Air Control) IAC Motor is bad or dirty. Clean or replace should fix your problem

Mar 15, 2011 | 2000 Ford Focus

1 Answer

With my foot on the brake and in drive I rev the gas but when I take my foot off the car idle drops and then it stalls

Check under the hood for a vaccuum leak. This could be a bad vaccuum hose. If no vaccuum leak then this actually sounds like your IAC is bad (idle air control motor) and needs replaced.

Nov 18, 2010 | 2000 Jeep Grand Cherokee

1 Answer

My toyota hilux surf 1992 auto, 3L 4x4, keeps cutting out when i put it in reverse and drive. sometimes it will go for a couple of minutes then just cut out randomlly. whats wrong with it and how do i fix...

Sounds like the idle is too low. This could be due to a bad vaccuum line or a faulty IAC if this car has fuel injection. IAC = Idle Air Control motor. Check for loose or broken vaccuum lines first. If no vacuum are bad and you can keep the car running by keeping your foot on the gas a little and dies when you let the gas pedal up then I would think the IAC is bad. A poor idle can also be the result of a long overdue tune up.

Nov 16, 2010 | Toyota 4Runner Cars & Trucks

2 Answers

I have a 2002 ford taurus. check engine light is on. Auto Zone did a scan today and the error code was p1507 can you please tell me what i need to do to fix this problem.

possible problems

Vaccuum leak
failed IAC valve
open or short
air inlet plugged

P1507 means "Idle Air Control Underspeed Error". It can be most commonly caused by a vacuum leak, a damaged Idle Air Control (IAC) assembly or a stuck IAC valve that needs cleaning. Essentially, your engine isn't idling at high enough according to your computer's programming parameters. Many times this shows up in colder weather as you try and start your vehicle. It will usually die unless you put your foot on the gas pedal and raise the RPM's. I have also read where a clogged air filter might be the problem. I would try cleaning your IAC valve first.

Oct 14, 2010 | 2002 Ford Taurus

1 Answer

What exactly is the iac valve? It sounds like there are rocks inside the supercharger. I just wonder if fixing the coupling would make the car stop missing and loping? Could it be the iac valve causing the...

The Idle Air Control valve is what monitors your idle air/fuel mixture. It is is not functioning at normal parameters, then the car will not idle properly. It sounds like your supercharger my have a faulty bearing and may need to be repaired. Your idle issues may be linked to the IAC but it could also be your throttle control sensor. Another problem is the throttle plate shaft will wear on the housing and cause a vaccuum leak causing the air/fuel mixture to be lean. Do you have any trouble codes? If so, have these codes read and it will narrow down the problem.
Hope this helps.

Jun 19, 2010 | 1998 Pontiac Grand Prix

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