Question about Eagle Talon

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Why is my 91 talon idling erratically? I have replaced the idle air control, mass air flow meter, tbhermostat, radiator, clutch, cleaned throttle body, and still idles up and down. The car run s beautifully when it's in gear. I even passed emissions. Please help.

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You may have a vacuum leak somwhere or possible a bad 02 sensor

Posted on Jun 01, 2010

Testimonial: "Thank you! If there's no thermo valve on my thermostat housing, what do I do with the vacuum hose that comes from the top of the throttle body, that is supposed to attach to the thermo valve? "

  • 3 more comments 
  • Susan Price Jun 01, 2010

    Just plug it for now to see if the idle smoothes out.

  • Brandon Berry
    Brandon Berry Jun 01, 2010

    I plugged it with a bolt and nothing noticeable happened. I used a vacuum pump to test the EGR valve and even though the needle slowly dropped after pumping, there was no difference in the way the car ran. Should I replace the EGR? Do I need to buy a certain gasket for this?

  • Susan Price Jun 01, 2010

    then spray water around all areas o fthe intake listening for a vacuum sucking noise. Or use brake cleaner. The idle should change when you find the leak.

  • Brandon Berry
    Brandon Berry Jun 01, 2010

    i'll do this now. thanks again.

  • Brandon Berry
    Brandon Berry Jun 01, 2010

    I did not hear anything noticeable and I used a whole can of brake cleaner.

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Check the ECU. It is located under and behind the radio in the center console. Removing the side trim pieces (carpeted) will give you access to the 10mm bolts (3) that hold it in. Disconnect the three harness connectors and remove the ECU. Remove the (4) screws that hold the unit together. there are three (3) capacitors on the circuit board. the two large ones are known to leak. this will cause erratic behavior (including idling) and will eventually lead to failure of the entire ECU. These capacitors MUST be removed, the board cleaned gently with rubbing alcohol, and new capacitors soldered back in place. Be sure to match the numbers EXACTLY when replacing the caps. Mouser.com is where I found mine.

Posted on Feb 09, 2013

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Intake Manifold leak problem, verify all air hoses for crack or simply replace all them.

Posted on Jun 01, 2010

  • Brandon Berry
    Brandon Berry Jun 01, 2010

    could this be my EGR valve?

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2 Answers

Hi guys,I have the 1994 eagle talon that idles rough.I replaced coil pack,did tune up an sensors.still idle rough


Possible vacuum leak. Check all hoses under hood for cracks/disconnections/leaks. Will be heard by a hiss type noise. You may have to scan computer to monitor sensor operating parameters with a scan tool to isolate this problem

Jul 18, 2015 | Eagle Cars & Trucks

1 Answer

Engen problem and missing


Sir, your question is not very clear, but I will still try to post a solution here. Engine missing could be due to any problem in fuel system, ignition system, engine or ECM as well.

LOW ENGINE IDLE SPEED (Poor idling):
-Throttle body (do the cleaning and idle speed learning)
-A /C signal circuit
-Fuel pump control circuit
-Fuel pump
-Intake system
-P C V valve (clogged or open) and hose

ROUGH IDLING:
-Cylinder Compression
-Ignition system (Igniters, spark plugs, wiring harness)
-Spark plug fouled, gap too wide or too short. (1.00-1.1 mm)
-Fuel injector circuit
-E C M power source circuit
-Fuel pump control circuit
-Fuel pump (required pressure 44 psi - 49 psi)
-Throttle body (cleaning)
-Intake system
-P C V valve and hose
-Air fuel ratio sensor
-Heated oxygen s ens or
-Mass air flow meter
-Idle hunting
-Throttle body
-Intake system
-P C V valve and hose
-Air fuel ratio sensor
-Mass air flow meter

HESITATION/ POOR ACCELERATION:
-Fuel pump control circuit
-Fuel pump
-Spark plug
-Ignition system
-Fuel injector circuit
-E C M power source circuit
-Mass air flow meter
-Throttle body (do cleaning)
-Intake system
-Valve timing
-Cylinder Compression


Jan 18, 2014 | 2008 Toyota Corolla

1 Answer

I have an 03 pontiac gtp supercharged. I have replaced the mass air flow sensor twice but after a while again I get erratic idle problems usually at first start up. this is a pieced together engine. The...


(1) clean the throttle assembly. They are very sensitive to build up also and they are very cheap change out the throttle body sensor. The TBS allows are to by pass both of these will cause erratic ideal. The mass air flow will not cause erratic idle but your car will be very loud and run rough. Failing this (cheap fix) I would suggest to look at the ignition coils.

Dec 24, 2013 | 2003 Pontiac Grand Prix GT

1 Answer

I have a 92 talon, has a rough idle when coasting and has low idle when still. I replaced plugs, wires, cleaned IAC valve, mass air flow sensor is good, cleaned the throttle body, added injector cleaner,...


Yes a vacuum leak could be the problem. Try filling a spray-bottle with tap water and spraying the vacuum lines and connections while the car is running.

Sep 17, 2012 | Cars & Trucks

1 Answer

1996 t bird 4.6l idles up and down


If it idles up and down real high, its the throttle body sensor. If it's a low up and down idle and runs rough it is mass air flow meter. If you unplug the mass airflow meter and it will just low idle (no up & down) then the mass air flow meter is bad.

Feb 11, 2011 | 1996 Ford Thunderbird LX

1 Answer

99 Eclipse 2.4 cid idles erratically and eventually stalls. Unplug the air flow meter and idle quality gets much better and does not stall. Does this mean I have a defective air flow meter? Engine codes...


couple of possible problems

first thing i would check is to make sure air intake hose between Mass air flow sensor and intake doesn't have any cracks holes make sure clamps are tight

secondly check for vacuum leaks carb cleaner works great for this spray around intake gaskets throttle body fuel injectors vacuum lines when spraying u notice change in idle (if idle picks up or stubles) that where your problem is example you spray around intake gasket and idle picks up you have bad intake gasket

third thing is to try and clean the mass air flow sensor they make special cleaner for this (u can use carb cleaner for this but it can leave residue on sensor and damage it so it not recomended)

my best guess for you with all three o codes is you have a vacuum leak somewhere

Nov 13, 2010 | Mitsubishi Eclipse Spyder Cars & Trucks

1 Answer

C220-manual transmission. erratic idling and sometimes idles up and down. Has been serviced and throttle body cleaned but still does this. Happens more often when the engine is warm.


according to your information it's faulty mass air flow sensor, check mass air flow sensor first, when the Idle rough just disconnect the air flow sensor wiring socket if it's better than when it's connected it's faulty air flow sensor, mass air flow sensor have fitted between air cleaner housing and throttle body, you can see wiring connector been connect on it you have to turn it anticlockwise and remove it. when you fix it back do the reverse order, if it's faulty replace air flow sensor. is this information helped you?

Oct 31, 2010 | 1994 Mercedes-Benz C-Class

1 Answer

2001 kia optima hesitates on acceleration gets better when warm, but still does it, has 2.4 engine


3 possible problems your mass are flow meter/senso could be going bad but not bad enough to register a fault, the same for your idle air valve and also your throttle position sensor. all 3 of these are on your throttle body .
with the engine running tap the side of the mass air flow with the back of a screw driver, if the engine sputers mass air flow needs replaced.you can try cleaning it with some mass air flow cleaner if you cant find that at your auto parts store get some electrical parts wash. your idle air valve needs to be cleaned or replaced there hard to get off. your throttle position sensor , you need to know the setting ,if the auto parts store cant give you aprint out of instuctions best to let a kia dealership do it and pay out the ****.

Aug 04, 2010 | 2001 Kia Optima

1 Answer

Runs erratically


The idle air valve (located below the throttle body) provides the control for constant idle speed. In order to set the correct air valve opening to achieve constant idle speed, the fuel injection control unit uses information from the air mass meter, throttle valve switch and the ignition control unit (RPM signal) to regulate the output current to the idle air valve. This means that the idle valve is not affected by air leaks or a jammed throttle valve.

Nov 03, 2008 | 1986 Volvo 740

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