schematics and diagrams: erratic idle

Showing posts with label erratic idle. Show all posts

Saturday, March 3, 2012

Erratic Idle?

Erratic idle noticed when engine idling.

Many clients come to our garage with problem of Erratic Idle:

This Erratic idle possibles are similar for car models listed below :-----
honda erratic idle

accord erratic idle
civic erratic idle
mustang erratic idle
bmw erratic idle
mercedes erratic idle
escort erratic idle

And many other car models too.

The possibilities to inspect ion this case is as follows :----

1 Inspect M.A.P. Sensor.
A Faulty M.A.P. Sensor can cause idle issues.

2 Inspect EGR Valve.
Improperly Functioning or Faulty EGR Valve can cause erratic idle.

3 Inspect Fuel Injector .
Dirty or Worn Fuel Injectors can cause idle problems.

4 Inspect Idle Air Control Valve.
Damaged, Loose, or Faulty Idle Air Control Valve can cause idle issues.

5 Inspect Idle Speed Actuator.
Damaged, Loose, or Faulty Idle Speed Actuator has to be checked.

6 Inspect Throttle Position Sensor.
Faulty or Incorrectly Connected Throttle Position Sensor is one possibility for erratic idle.

7 Inspect Fuel Filter.
A Clogged or Dirty Fuel Filter causes erratic idle.

8 Inspect PCV Valve.
If PVC valve is Plugged or Damaged erratic idle will be noticed.

9 Inspect Carburetor on vehicle model with carb.
A Worn, Faulty or Damaged Carburetor can also cause erratic idle.

10 Inspect Valve.
A Burned, Worn, or Sticking Exhaust Valves are causes of major erratic idle.

12 Inspect Timing Set.
Slipped Timing Chain or Worn TimingGear(s) are issues of Erratic idle.

13 Inspect Fuel Pump.
A Faulty Fuel Pump can cause erratic idle.

14 Inspect Camshaft.
Erratic idle due to Camshaft Lobes Worn.

15 Inspect Ignition Point Set.
If Burned, Worn or Incorrectly Set Ignition Points.The idle problems will be noticed.

This details will help.
Thanks.

See below latest idle related solved problems :----

Bad miss at idle?

http://technoanswers.blogspot.com/2012/01/bad-miss-at-idle.html

No heat, blower blows only cold?

http://technoanswers.blogspot.in/2012/02/no-heatblower-blows-only-cold.html

Cylinder 6 Misfire?

http://howtobyme.blogspot.com/2011/12/cylinder-6-misfire.html

While stop engine idles like cylinder missing?

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

Idle flair is noticed on car? Rough idle? car will not idle? Erratic idle speed?

http://technoanswers.blogspot.in/2012/02/idle-flair-is-noticed-on-car-rough-idle.html

High rpm in neutral? Inconsistant high RPM in neutral?

http://technoanswers.blogspot.in/2012/02/high-rpm-in-neutral-inconsistant-high.html

Friday, December 9, 2011

Engine Misfire codes on Chevrolet Malibu?

Engine misfiring codes are shown,due to many possibilities. Faulty spark plugs,problem with O2 sensors,coil pack worn out.Also many more possibilities are there.If you notice engine running rich with misfire issue then first try cleaning MAF sensor.

Engine is running rich--may be the cause of the misfire code as well. Couple things to try. First, clean the MAF sensor by spraying with electrical parts cleaner. Also, try adding some injector cleaner to the tank.

This basic details will help.Thanks.

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If you need dis-assembly or replacement instructions for any other auto/car part, or you want to ask question related to your car/truck jeep problem then please leave the comment with your details, so I can provide you the required instructions and solutions.

For more solved car problems,see the list below :--------

How to troubleshoot Engine Misfires?

http://schematicsdiagram.blogspot.com/2011/06/how-to-troubleshoot-engine-misfires.html

Cylinder 6 Misfire?

http://howtobyme.blogspot.com/2011/12/cylinder-6-misfire.html

Where are TPS and IAC Located on Ford Escort?

http://schematicsdiagram.blogspot.com/2011/12/where-is-tps-and-iac-located-on-ford.html

Car Engine Stalls While Driving?

http://schematicsdiagram.blogspot.com/2011/12/car-engine-stalls-while-driving.html

Testing mass air flow sensor?

http://schematicsdiagram.blogspot.com/2011/12/testing-mass-air-flow-sensor.html

Where is MAF sensor located on 2000 Ford Expedition?

http://schematicsdiagram.blogspot.com/2011/12/where-is-maf-sensor-located-on-2000.html

Car won't start without hitting the gas pedal?

http://schematicsdiagram.blogspot.com/2011/12/car-wont-start-without-hitting-gas.html

Chevy s-10 blazer 4.3l Spark Plug Firing Order?

http://howtobyme.blogspot.com/2011/12/chevy-s-10-blazer-43l-spark-plug-firing.html

Car cranks, has spark but will not start?

http://howtobyme.blogspot.com/2011/12/car-crankshas-spark-but-will-not-start.html

Where is Radio Fuse located on 2007 Dodge charger?

http://schematicsdiagram.blogspot.com/2011/12/where-is-radio-fuse-located-on-2007.html

Trunk button Not Working on Buick car?

http://schematicsdiagram.blogspot.com/2011/12/trunk-button-not-working-on-buick-car.html

Location of Freeze Plug on 1998 Ford Expedition?

http://schematicsdiagram.blogspot.com/2011/12/location-of-freeze-plug-on-1998-ford.htmlFord Keyless Remote Fob Reprogramming?

http://schematicsdiagram.blogspot.com/2011/12/ford-keyless-remote-fob-reprogramming.html

1995 Oldsmobile Eighty Eight has bad O2 Sensor?

http://schematicsdiagram.blogspot.com/2011/12/1995-oldsmobile-eighty-eight-has-bad-o2.html

Dual Exhaust on 1996 Chevrolet camaro z28?

http://schematicsdiagram.blogspot.com/2011/12/dual-exhaust-on-1996-chevrolet-camaro.html

How to adjust rpm on 2009 dodge charger SRT8?

http://schematicsdiagram.blogspot.com/2011/12/how-to-adjust-rpm-on-2009-dodge-charger.html

Car takes time to Crank and start?

http://howtobyme.blogspot.com/2011/12/car-takes-time-to-crank-and-start.html

Car jerks while going uphill and Check engine light is ON?

http://schematicsdiagram.blogspot.com/2011/12/car-jerks-while-going-uphill-and-check.html

Car turns over, but only starts, if starter is jumped?

http://schematicsdiagram.blogspot.com/2011/12/car-turns-overbut-only-startsif-starter.html

Service Engine Soon light stays on?

http://schematicsdiagram.blogspot.com/2011/12/service-engine-soon-light-stays-on.html

Gasoline around gas cap?

http://schematicsdiagram.blogspot.com/2011/12/gasoline-around-gas-cap.html

Car will not run after resetting inertia switch on Mercury Mystique?

http://schematicsdiagram.blogspot.com/2011/12/car-will-not-run-after-resetting.html

VAN emits whitish bluish smoke and bad fuel smell from exhaust

http://schematicsdiagram.blogspot.com/2011/12/van-emits-whitish-bluish-smoke-and-bad.html

Car cigarette lighter fuse blows out?

http://schematicsdiagram.blogspot.com/2011/12/car-cigarette-lighter-fuse-blows-out.html

CD MECH ERROR?

http://schematicsdiagram.blogspot.com/2011/12/cd-mech-error.html

Car will not go into 4WD high or 4WD low?

http://schematicsdiagram.blogspot.com/2011/12/car-will-not-go-into-4wd-high-or-4wd.html

Truck is hard to start and Emits smoke while starting?

http://schematicsdiagram.blogspot.com/2011/12/truck-is-hard-to-start-and-emits-smoke.html

Engine cuts out at 3000 RPM?

http://schematicsdiagram.blogspot.com/2011/12/engine-cuts-out-at-3000-rpm.html

Car turns over but will not start, only makes clicking sound?

http://schematicsdiagram.blogspot.com/2011/12/car-turns-over-but-will-not-startonly.html

Catalytic Converter glowing hot?

http://schematicsdiagram.blogspot.com/2011/12/catalytic-converter-glowing-hot.html

After getting car washed, check engine light is ON and key less entry not working, tried reprogramming. Also car shows fuel pressure?

http://schematicsdiagram.blogspot.com/2011/12/after-getting-car-washedcheck-engine.html

Fuel gauge jumps from empty to full?

http://schematicsdiagram.blogspot.com/2011/12/fuel-gauge-jumps-from-empty-to-full.html

Why airbag light flashes 7 times?

http://schematicsdiagram.blogspot.com/2011/12/why-airbag-light-flashes-7-times.html

Passenger side Folding Mirror is not operating?

http://schematicsdiagram.blogspot.com/2011/12/passenger-side-folding-mirror-is-not.html

Very low air output on Chevrolet Trailblazer?

http://howtobyme.blogspot.com/2011/12/very-low-air-output-on-chevrolet.html

After replacing battery, ignition not working?

http://howtobyme.blogspot.com/2011/12/after-replacing-batteryignition-not.html

Where is Fuse box located on 2002 Honda Accord?

http://howtobyme.blogspot.com/2011/12/where-is-fuse-box-located-on-2002-honda.html

How to reset Radio code after car battery is died?

http://howtobyme.blogspot.com/2011/12/how-to-reset-radio-code-after-car.html

Car still runs Rough after tune up?

http://howtobyme.blogspot.com/2011/12/car-still-runs-rough-after-tune-up.html

Car cranks, has spark but will not start?

http://howtobyme.blogspot.com/2011/12/car-crankshas-spark-but-will-not-start.html

Chevy s-10 blazer 4.3l Spark Plug Firing Order?

http://howtobyme.blogspot.com/2011/12/chevy-s-10-blazer-43l-spark-plug-firing.html

2008 Ford Ranger Shifter Knob Removal?

http://schematicsdiagram.blogspot.com/2011/12/2008-ford-ranger-shifter-knob-removal.html

Erratic idle on car?

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

Car dies when gas pedal is pressed?

http://schematicsdiagram.blogspot.com/2011/12/car-dies-when-gas-pedal-is-pressed.html

MAF, IAT, MAP and Coolant Level Sensor problem all together on Mazda MPV?

http://schematicsdiagram.blogspot.com/2011/12/maf-iat-map-and-coolant-level-sensor.html

Car Surging?

http://schematicsdiagram.blogspot.com/2011/12/car-surging.html

How to replace a distributor on Chevrolet Camaro?

http://schematicsdiagram.blogspot.com/2011/12/how-to-replace-distributor-on-chevrolet.html

Cadillac Seville Digital Dash Display not working?

http://schematicsdiagram.blogspot.com/2011/12/cadillac-seville-digital-dash-display.html

Can car radio code block Passkey anti theft system ?

http://schematicsdiagram.blogspot.com/2011/12/can-car-radio-code-block-passkey-anti.html

Rear oil seal leaking?

http://schematicsdiagram.blogspot.com/2011/12/rear-oil-seal-leaking.html

Car water leak around the Starter area and Bell Housing?

http://schematicsdiagram.blogspot.com/2011/12/car-water-leak-around-starter-area-and.html

Front tires leaning IN?

http://schematicsdiagram.blogspot.com/2011/12/front-tires-leaning-in.html

Where is Vent fan located on Chevrolet Impala?

http://schematicsdiagram.blogspot.com/2011/12/where-is-vent-fan-located-on-chevrolet.html

Where is Vent fan located on Chevrolet Impala?

It is under the passenger side of the dash. You can not see it until you remove the plastic cover under the passenger side of the dashboard.If that fan is not working,then first see if there is dust got collected there and causing the fan not to run.If the area is cleaned then test the fan wiring's and fan motor.If it checked out faulty,then fan motor assembly has to be replaced.

This basic details will help.Thanks.

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See below the list of more solved car problems:----