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PCV is blocked

Smoking at idle after 30 minutes drive

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  • Cars & Trucks Master
  • 2,359 Answers

PCV and the rubber grommet is under $18.
Just replace it.

Posted on Jan 18, 2014

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Posted on Jan 02, 2017

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SOURCE: replace PCV valve 2001 taurus duratec engline

I dont think it is the PCV but its a good idea to replace the PCV at least once a year either way, and its very cheap, usually $2-$5 at autozone.

Posted on Mar 31, 2009

noranda21
  • 1547 Answers

SOURCE: 1996 geo Car idles a little fast but drives fine.

This is a classic sign of a locked torque converter and/or siezed rear brakes since the age of your car add something called no smoke to your oil it will help it also check you transmission fluid level

Posted on Dec 26, 2010

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What causes car to run hot?


many things cause an engine to run hot . TIMING off thermostat plugged radiator, cooling fan not working etc . go see a good local mechanic

Aug 30, 2017 | 1996 Dodge Intrepid

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Lost power smoke exhaust


If it is a 6 cylinder inline then catalyst is plugging up a easy test would be to remove a oxygen sensor and see if power returns to normal. V-8 models have 2 types of manifolds plastic and metal the metal ones have a plate bolted to the bottom which the gasket splits and sucks in engine oil causing all sorts of drive ability issues the plastic versions more trouble free but PCV ventilation system can cause smoking

Mar 21, 2014 | Jeep Grand Cherokee Cars & Trucks

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Smokey exhaust


Smoking after idling for a few minutes indicates bad valve stem seals. Smoking on acceleration indicates bad bearings and just smoking while driving indicates worn rings or glazed bores. All indicate a motor needing repair or replacement

Sep 29, 2013 | 2007 Ford F

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Blue Smoke .... Faulty PCV ???


does the engine idle smoothly? is the service engine soon light on? the engine is running rich causing the blue smoke.it could be pcv valve but unlikely

May 23, 2012 | 2002 Ford Explorer

1 Answer

Oil change tech says my idle relearn needs fixing on my 2001 Yukon XL...can my husband do this?


{: ) Anytime the powertrain control module (PCM) or the battery is disconnected, the PCM loses power, or the PCM is reprogrammed, the PCMs learned idle position is lost. The engine idle is unstable when the learned idle position is lost. For a 2001 Yukon XL, you can try these steps: Automatic Transmission
  1. Turn OFF the ignition.
  2. Restore the PCM battery feed. ( IF it was disconnected)
  3. Turn OFF the A/C controls.
  4. Set the parking brake and block the drive wheels.
  5. Start the engine.
  6. Ensure that the engine coolant temperature is more than 80°C (176°F).
  7. Shift the transmission into Drive.
  8. Allow the engine to idle for 5 minutes.
  9. Shift the transmission into Park.
  10. Allow the engine to idle for 5 minutes.
  11. Turn OFF the engine for 30 seconds.
Manual Transmission
  1. Turn OFF the ignition.
  2. Restore the PCM battery feed. (IF it was disconnected)
  3. Turn OFF the A/C controls.
  4. Set the parking brake and block the drive wheels.
  5. Place the transmission in Neutral.
  6. Start the engine.
  7. Ensure that the engine coolant temperature is more than 80°C (176°F).
  8. Allow the engine to idle for 5 minutes.
  9. Turn OFF the engine for 30 seconds.
After the procedure, you can do testing and observations. If unsuccessful, you may repeat the steps.
Also, the best time to relearn idle is after a throttle body clean (from carbon deposits)

Jul 13, 2011 | GMC Yukon XL Cars & Trucks

1 Answer

When the car is in drive it idles up to 30 mph i got trouble p 1506


P1506 - Air Idle Control Over Speed Error

Replace the air idle control valve. Also check for vacuum leaks at the pcv valve / hose an any vacuum lines, to look for un-metered air coming in.


Jan 20, 2011 | 2002 Ford Explorer

1 Answer

1996 geo Car idles a little fast but drives fine. After driving it for a couple hours. Turn off car and then back on immediately, it will only drive n reverse .with alot of smoking. Then wait around 30...


This is a classic sign of a locked torque converter and/or siezed rear brakes since the age of your car add something called no smoke to your oil it will help it also check you transmission fluid level

Dec 25, 2010 | 1987 Toyota Camry

1 Answer

Replace PCV valve 2001 taurus duratec engline rough idling when engine is cold. Engine will stop when vehicle is stopped at an intrersection. After driving for 30 plus minutes the car idles fine. Air leak?...


I dont think it is the PCV but its a good idea to replace the PCV at least once a year either way, and its very cheap, usually $2-$5 at autozone.

Mar 25, 2009 | 1999 Ford Taurus

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