Question about 1997 Chevrolet Suburban

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Will not start unless throttle is floored ; then runs erratically ;stubles when engine is gunned;idles faster than normal

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  • Chevrolet Master
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You will need a live data scanner for this, but if your coolant sensor for the computer (some vehicles have one for the computer, and one for the gauge) is bad, and reading full cold, it will dump too much fuel. and by throttling it, you bypass that mode.

Posted on Mar 22, 2011

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Posted on Jan 02, 2017

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2003 Kia Sedona what is the RPM supposed to idle aton cold start an in warm weather


Idle speed depends on a number of factors; for instance it may idle faster when the air conditioner is on. Instead of a fixed idle speed, as in the old cars, the engine computer sets the speed to whatever is needed to run any accessories and maintain smooth operation, but generally not more than that. That's under normal circumstances. There are several failure modes that cause erratic idle speed; usually the engine will also run roughly.

Jul 09, 2017 | Kia Cars & Trucks

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99 eclipse 2.0 N/A erratic idle, low idle , sometimes doesn't even idle when started it just dies unless you give it fuel. Have replaced throttle position sensor 6 times. What else can cause it?


If check engine light is on get the codes. The best that can be done is a guess without them my best guess would be idle air control motor (IAC).

Jul 04, 2016 | Cars & Trucks

1 Answer

97Honda accord idling high. Computer said bad map sensor so I replaced it and still idled high and still says map sensor bad also is locked in park.


You should clean the throttle body and Idle Air control (IAC) solenoid using spray type throttle cleaner. Here's how:

1. Remove the air snorkel which runs from the air filter box to the intake manifold.
2. Have a partner to hold the throttle to the floor (engine OFF).
3. Spray the cleaner into the throttle opening and use a cloth and/or small soft bristle brush to clean the throttle plate and the entire opening.
4. Remove the IAC solenoid (be careful not to lose the rubber O-ring which goes around it - this is a seal and the engine will run terribly without it) and clean its tip with the throttle cleaner.
5. Clean the bore that the IAC fits in to as well.
6. Have your partner to release the throttle.
7. Replace the IAC, air snorkel and any hoses or wires removed during this process.
8. Start engine
**NOTE** the engine will take longer than normal to start because of the "floor" condition caused by the throttle cleaner. Once the engine starts, rev it a few times to burn off the excess fuel/throttle cleaner.


The LOCKED IN PARK PROBLEM
This is due to a faulty or disconnected shift lock solenoid.
It is located behind the left side of the dash near the center console.

Jul 29, 2014 | Cars & Trucks

1 Answer

BMW Z3 3.0 year 2000 erratic tickover problems


You can in most cases repair this by cleaning the engine throttle valve and the idle speed control valve using a product called CRC Spray Throttle valve cleaner. Spray the cleaner into the air intake of the engine with the hose removed from the throttle body, the engine will try to stall so hold up the idle speed manually. Once you have used up about 1/2 can of the cleaner stall the engine out while spraying and turn the key off, disconnect the negative battery cable for 5 minutes and then reconnect and drive the car for a about 25 miles of varied driving modes. If this doesn't cure the problem you may need the fuel injectors professionally cleaned by the dealer service dept.

May 05, 2017 | Cars & Trucks

2 Answers

I have 1999Chevy suburban with 6.5 turbo diesel motor.it idles up and down and when driving the gas pedal is real touchy Wat is the problem and were do i locate the problem


Check the help links related to this problem.Click the link below to go through its troubleshooting procedure :-----Idles rough and quits when gas pedal is pressed less? http://technoanswers.blogspot.in/2012/01/1999-ford-f-150-idles-rough-and-quits.html---------
Car won't start without hitting the gas pedal? http://schematicsdiagram.blogspot.com/2011/12/car-wont-start-without-hitting-gas.html
-------Complete loss of brake pedal then all gets normal? http://repairhelpcenter.blogspot.com/2012/01/complete-loss-of-brake-pedal-then-all.html
------Car dies when gas pedal is pressed? http://schematicsdiagram.blogspot.com/2011/12/car-dies-when-gas-pedal-is-pressed.html
--------Pushing on the gas pedal, but the car slows down? Gas pedal to the floor and the car slows down?

http://technoanswers.blogspot.in/2012/02/pushing-on-gas-pedal-but-car-slows-down.html

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After replacing brake rotors and pads, brake pedal remains on floor? http://technoanswers.blogspot.in/2012/02/after-replacing-brake-rotors-and-pads.html

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accelerator pedal sensor? http://technoanswers.blogspot.in/2012/02/2009-chevy-impala-accelerator-pedal.html

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For rough idle issues and problem troubleshooting,go through the help links provided below :----- van idles rough?

http://howtobyme.blogspot.in/2012/01/2004-ford-freestar-van-idles-rough.html

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will not idle when cold?

http://technoanswers.blogspot.in/2012/02/ford-explorer-40-will-not-idle-when.html

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runs lean and idles rough?

http://technoanswers.blogspot.in/2012/02/ford-runs-lean-and-idles-rough.html

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Engine stumbles coming off idle when warm?

http://repairhelpcenter.blogspot.com/2012/01/engine-stumbles-coming-off-idle-when.html

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Erratic idle on car?

http://schematicsdiagram.blogspot.com/2011/12/erratic-idle-on-car.html

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Low idle when cold out side?

http://repairhelpcenter.blogspot.com/2011/12/low-idle-when-cold-out-side.html

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Idle Air Control (IAC) Valve Replacing?

http://schematicsdiagram.blogspot.com/2011/12/gmc-idle-air-control-iac-valve.html

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Engine quits at idle?

http://repairhelpcenter.blogspot.com/2011/10/engine-quits-at-idle.html

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Car overheats and Air blows hot at idle?

http://howtobyme.blogspot.com/2011/11/car-overheats-and-air-blows-hot-at-idle.html

------
While stop engine idles like cylinder missing?

http://schematicsdiagram.blogspot.com/2012/01/while-stop-engine-idles-like-cylinder.html

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This will help.

Thanks.

Mar 01, 2012 | 1999 GMC Suburban

1 Answer

Engine idles normally, but "burps"


Clogged fuel filters will cause this. Other things also. I would start here, a $10.00 fix Also is this burp threw the throttle body.

Aug 17, 2011 | 1987 Jeep Cherokee

1 Answer

Idle problem


check the airflow meter it may be stuck and make sure the electrical connection to it is not loose and also check the hose leading to it are not loose or cracked they tend to crack at the bottom where you cannot see it unless you remove it and check

May 21, 2009 | 1999 BMW 318 ti

2 Answers

1997 ford ranger idol problems


MIGHT be the tps
The TPS is sensitive to heat, moisture and vibration leading to the failure of some units. The sensor is a sealed unit and cannot be repaired only replaced. A TPS may fail gradually leading to a number of symptoms which can include one or more of the following: -
  • Poor idle control: The TPS is used by the ECU to determine if the throttle is closed and the car should be using the Idle Air Control Valve exclusively for idle control. A fault TPS sensor can confuse the ECU causing the idle to be erratic or "hunting".
  • High Idle Speed: The TPS may report faulty values causing the engine idle speed to be increased above normal. This is normally found in conjunction with a slow engine return to idle speed symptom.
  • Slow engine return to idle: A failing TPS can report the minimum throttle position values incorrectly which can stop the engine entering idle mode when the throttle is closed. Normally when the throttle is closed the engine fuel injectors will be deactivated until a defined engine RPM speed is reached and the engine brought smoothly to idle speed. When failing a TPS will not report the throttle closed and fueling will continue causing the engine to return to idle very slowly.
  • Engine Hesitation on Throttle Application: The TPS is also used by the ECU to determine if the driver has applied the throttle quicker than the Manifold Air Pressure sensor can read. The fueling is adjusted acordingly to cope with the sudden increase in air volume, however a faulty sensor can cause the ECU to ignore this data and the engine will "hesitate" when applying the throttle. In extreme cases with the engine at idle, a sudden application of full throttle can stall the engine.
  • Engine Misfire: A fault TPS can report values outside the deined acceptable range causing the ECU to incorrectly fuel the engine. This is noticable as a slight misfire and can trigger the misfire detection software and/or Malfunction Indicator Lamp (MIL) light on the dashboard. Extreme cases can cause excessing misfires resulting in one or more cylinders being shut down to prevent engine and catalytic converter damage.
[edit] Manual recalibration In all cases a manual recalibration of the TPS may resolve the issues at least on a temporary basis. To recalibrate the TPS: -
  1. With the engine off, insert the key and turn the ignition to position 2 (On) without starting the engine.
  2. For MEMS-equipped cars (S1), quickly press and release the accelerator pedal several times (at least 5, but to be sure 8 or 9) using as much of the throttle travel as practicable. This will trigger the ECU into the closed-throttle reference learn algorithm, which has it looking for the lowest measured static throttle position (the closed position). The throttle position calibration is a fixed definition from this point.
  3. Turn the ignition off, remove the key and wait for the ECU to power down (about 30-40s).
  4. Start car as normal.

Feb 26, 2009 | 1996 Ford Explorer

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