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LR3 Rev stutter and Power loss

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Old Sep 13, 2017 | 02:04 AM
  #11  
heramiah's Avatar
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7th Gear
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Nope not changed any bulbs or anything recently lol.

I will take the advice and check the throttle position sensor tonight.

Crazy thing is - starting the car for 1st time in the morning, i have no rev power. However, if i keep it started for 10-15 minutes allowing the engine to warm and then restart the car - the rev power is back!
 
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Old Sep 14, 2017 | 09:01 AM
  #12  
djkronik57's Avatar
Winching
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From: Boston, MA
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I would check all connections you might have disturbed when you were cleaning things. Hopefully it's just a loose connection somewhere that when it heats up, is good to go.

If not, you might have accidentally damaged one of those parts when cleaning. The MAF is pretty easy to damage.
 
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Old Sep 15, 2017 | 08:37 AM
  #13  
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Originally Posted by heramiah
Nope not changed any bulbs or anything recently lol.

I will take the advice and check the throttle position sensor tonight.

Crazy thing is - starting the car for 1st time in the morning, i have no rev power. However, if i keep it started for 10-15 minutes allowing the engine to warm and then restart the car - the rev power is back!
If a component is heating up, it can change the way it works. For example, heat can either make electronics STOP working right or START working right. Heat can expand metals used in connectors, on circuit boards, or the resistance of the material within the electronics can change enough to cause an effect. That's why I suggested cleaning the connections. Film corrosion can cause an increase in electrical resistance which can throw the computer for a loop or you may find a wire that's chafing, etc. Most likely, the sensor is bad, but it's worth a few minutes to check out the cheap fixes.

However, after doing a search, I've found that the accelerator pedal position sensor is located in the footwell on the pedal. See https://landroverforums.com/forum/lr...driving-56231/

Great PDF's in the post with explanations.

Don't know if this sensor is even the problem; hard to tell without a factory type code reader - expensive. I'm not sure if what you used to pull the codes is accurate (haven't studied your App). If it is accurate, it may be an expensive part to replace. Please post back with the answer you find. It could be any number of things. Good luck.

- TC
 

Last edited by TopCat; Sep 15, 2017 at 09:03 AM. Reason: Added information
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Old Nov 8, 2017 | 04:57 AM
  #14  
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The car is still at the garage . they work very slow here. Still not been able to find the fault. So far he has changed and tested the accelerator pedal, throttle, air filter, oxygen sensor, even changed the oil+filter and more, but the problem remains. drive for a minute and the power goes! fearing he is on the verge of giving up which would give me no choice but to go to the dealer.
 
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