Question about 2004 Volvo XC70
You might find that the throttle sensor which is electronic and part of the accelerator pedal has become unresponsive due to lack of use.i had this problem with a ford maverick which had been sat idle for a few months. And this caused the engine management light to come on and throw into limp mode.my cure was to press the pedal up and down quite hard with the engine switched off.also did this to the clutch pedal.cured the problem but every so often for the first year of regular use it would repeat.so I just pumped the pedal fully up and down whilst engine was off.no more limp modes.
Posted on Dec 07, 2014
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Posted on Jan 02, 2017
Check the actual ohm readings for tps sensor to manufacturer specs. Sounds like the tps sensor is out of range. Sometimes the o2 sensor gives a false reading to the ecm which causes the tps malfunction. Doubt seriously if it electrical short. Bad ground maybe.
Posted on Jul 30, 2009
With both codes pointing at TP sensor, I'd certainly take the time to replace it, as well as make sure connections to it are clean, and good. Chances are, you won't be able to take part back anyway. As far as exhaust goes, if it's leaking in the right places in may cause improper readings at sensors downstream, but if not obvious leak, I wouldn't be concentrating in that area right now.
Posted on Nov 01, 2009
Possible problem with the alternator not putting out enough voltage. I had the same problem with my 2002 XC70, putting in a new alternator fixed it. I used a local mechanic who I found on the car talk web-site. Low Cost Volvo parts can be purchased at FCP Groton.
Posted on Aug 11, 2010
SOURCE: 2003 GMC Sierra 5.3L (has
CODE PO120 - TP SENSOR 1 SIGNAL RANGE PERFORMANCE. CODE P1516 - TAC MODULE THROTTLE ACTUATOR POSITION PERFORMANCE. CODE P2135 - THROTTLE POSITION SENSOR 1 - 2 CORRELATION ERROR. THIS IS A DEALERSHIP FIX YOU HAVE PROBLEMS OR FAULTS IN THE THROTTLE POSITION SENSOR.
Posted on Oct 24, 2010
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