Question about Volkswagen Jetta
2002 Jetta 2.0L, dealer replaced coolant flange and both inner CV boots. No mil light on prior. 150 miles post repairs I get P0722 & P0730. Car has 189,000. Revs higher than normal to shift from first to second, revs high 5k but will not go higher then second. Found air pump hose that comes out of air cleaner box disconnected. Reconnected, cleared codes, no change.
Check wiring at coolant sensor and at connectors to transmission for moisture.
Posted on Feb 03, 2015
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Posted on Jan 02, 2017
In 2001 the "Check Engine" light might give information about what's going on with the transmission. You may want to have it checked by a shop before the transmission decides to die. It might be a simple fix.
Posted on Feb 19, 2010
Your issue is a bad "speed sensor". Your speedometer is controlled by a sensor in your transmission, and when it quits working your speedometer will not work, it can cause very irregular shift patterns and slipping. Replacing your speed sensor should resolve your issues.
I hope this helps you, and I wish you luck on your repair.
Posted on May 16, 2009
the idle air control valve is responsible for engine idle.
this is a common failure on ford's. but I don't think yours is bad because it does idle high befor it dies.
you stated you had codes p0171 and p0174 these are lean codes for bank one and two, you said you found a vacuum leak and repaired it, the vacuum leak was mostly likely the cause of the lean codes, however the pcm has calibrated the fueling stategy for this lean mixture, what you need to do is erase the KAM "keep alive memory" this is done by unhooking the negative battery cable for 60 seconds, this is the only way to erase the KAM the $6000.00 machine I use wont even do it.
once the KAM is clean the computer will go into a relearn state and all operating values will be adjusted for the vehicles current condition, during this relearn session the vehicle may have some driveability issues (low or high idle, stalling, poor fuel economy) the relearn should complete within 10 minutes of idling and then 10 minutes of driving.
good luck and keep me updated
Posted on Jun 14, 2009
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