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8 hp teccumseh motor rpm vary up and down no mather throttle hi med or low cab has been clean

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Check for a missing damper spring on the throttle rods between the throttle butterfly and governor lever

Posted on Dec 18, 2016

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Cab fan doesn't work? 1998 Buick Labsaber


Cab fan , Heater / A/C blower motor . Is proper terminology . Doesn't work any speed , high , med. low etc... Test electrical circuit . Heater Blower Motor Troubleshooting

Jun 11, 2016 | Buick Cars & Trucks

1 Answer

Correct code P0504?


What Colorado do you have ? 2 wheel or 4 wheel drive ? Sport ,sport LS 3.5L , Z71, Z71 LS. etc. what size engine ? an does it have electronic throttle control ? I have factory service info an it is not showing that code .
DTC P0506

Circuit Description

The throttle actuator control (TAC) motor is controlled by the powertrain control module (PCM). The DC motor located in the throttle body drives the throttle plate. In order to decrease idle speed, the PCM commands the throttle closed reducing air flow into the engine and the idle speed decreases. In order to increase idle speed, the PCM commands the throttle plate open allowing more air to pass the throttle plate. If the actual idle RPM does not match the desired idle RPM within a calibrated time, this DTC sets.

DTC Descriptor

This diagnostic procedure supports the following DTC:
DTC P0506 Idle Speed Low
DTC P0507

Circuit Description

The throttle actuator control (TAC) motor is controlled by the powertrain control module (PCM). The DC motor located in the throttle body drives the throttle plate. In order to decrease idle speed, the PCM commands the throttle closed reducing air flow into the engine and the idle speed decreases. In order to increase idle speed, the PCM commands the throttle plate open allowing more air to pass the throttle plate. If the actual idle RPM does not match the desired idle RPM within a calibrated time, this DTC sets.

DTC Descriptor

This diagnostic procedure supports the following DTC:
DTC P0507 Idle Speed High
Cleaning the throttle body mite take care of it !
Cleaning Cleaning An Electronic Throttle Body Safely

Jan 31, 2015 | 2005 Chevrolet Colorado

2 Answers

1999 ford taurus rpm go up and down


Scan for trouble codes at local auto parts store. Possible Idle Air Control motor or throttle position sensor, or a big vacuum leak. Idle Air Control Valve Replacement

Jan 11, 2015 | 1999 Ford Taurus

2 Answers

Motor surges at 3000 RPM


Hi,
Mass airflow sensor, idle air control valve, throttle position sensor could be @ fault. Is the Check Engine Light on?

Td

Mar 14, 2014 | 2001 Ford Ranger Regular Cab

1 Answer

Rpm problems with no check engine light on


If the RPM is high check for a vacuum leak. Examine all vacuum hoses for cracking or disconnections. If no problem is found, spray carburetor cleaner on the intake manifold and any other gasketed areas on the top of the engine. If, when spraying, the engine RPM fluctuates, then suspect a gasket leak where the spray is entering the engine. Also check throttle body for sticking. Clean it with carburetor cleaner.

Low RPM could indicate a clogged fuel filter, low gas, dirty or bad fuel injectors. If engine idle is low because it is running poorly (e.g., a misfire), check engine for misfire. Misfires can be caused by bad spark plugs, bad spark plug wires, bad fuel injectors, a bad coil pack, low compression in a cylinder, etc. Check the obvious cheapest things first.

If RPM is varying up and down, check Idle Air Control Valve (IACV) for sticking or obstructions. You may need professional help at this point.

Feb 05, 2014 | 1996 Ford Mustang

1 Answer

Sticky high acceleration 1995 LE V6 camry I have a 1995 LE V6 camry with the 3.0 litre engine. Car starts and idles normally but after driving any distance idle rpm sticks up between 2000-3000 when you...


The spring that returns the throttle is getting weak. Best thing to do is clean the throttle inside and out. Clean the throttle plate front and back and as for as you reach inside, use an old tooth brush and brake clean. Once clean lube the spring area. This should help. But if it still sticks , I would be looking at the throttle cable.

Aug 14, 2011 | 1995 Toyota Camry

1 Answer

1991 Toyota extra cab v6 manual tranny. starts


sounds like you have to adjust your idle, fuel injected or carburated?

Aug 10, 2009 | 1991 Toyota Pickup

1 Answer

RPM to low (700rpm) mitsubishi outlander 2.4L 2005


Your throttle body likely needs cleaning.

Take the intake hose off and using throttle body cleaner or brake cleaner, spray a rag and use our fingers to clean the gunk off the throttle plate and the contacting area of the inside of the throttle body.

Jun 02, 2009 | 2005 Mitsubishi Outlander

1 Answer

1998 Ford Ranger super cab heater fan problem


Check the resistor block. It is located under the hood on the passenger side firewall under the fan motor. It has two small screws holding it in place with a wiring plug attached. Clean out corrosion to restore good electrical connections. If cleaning does not restore operation a new resistor block will be required. Weatherproof the outside of the wiring plug to prevent further corrosion and reassemble.

Dec 21, 2008 | 1998 Ford Ranger SuperCab

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