Question about 2002 Toyota Corolla

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My toyota nze 2002 model has a problem with ref adjustment, sometimes when on D mode the ref counter drops below .9 hence the vehicle will vibrate but when on N its ok. what could be the problem?

I changed the fuel sensors because it was not consistent reffing, now the ref is ok on N & P mode 1 ref counting, but on D its vibrating, and going below .9

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  • Toyota Master
  • 3,679 Answers

Revs will drop when put in drive ,does vibrating stop when you take foot of brake a slowly accelerate away? if so vibration could be coming from worn eng/transmission mountings

Posted on Apr 01, 2014

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Posted on Jan 02, 2017

  • 1861 Answers

SOURCE: Rattle/Vibration from front of vehicle when idling at stop

Hi and welcome to FixYa. Please try this:
GO out to the car, and lift up on the hood. Does it raise a bit and rattle? If so;
Open the hood, and look at the perimeter of the front radiator support. You will see 2 small rubber thingys, that look like that they are screwed onto the metal that is holding the radiator. Unscrew them a little, and close the hood. Pull up on the hood and see if the rattle goes away. If not, repeat unscrewing the rubber things until the lift disappears.

A FixYa rating (4 blue diamonds) would be greatly appreciated for my assistance.

Posted on Feb 11, 2009

  • 1 Answer

SOURCE: Toyota Prado 2.7 litres - vibrating in idling when rpm goes 600

Definitely engine mounts.

Posted on Mar 24, 2009

  • 318 Answers

SOURCE: P0420 and P0430

The AF sensors are uupstream and the O2 down stream. The car' s computer tests them and it is saying your cats are bad. If you have a scan tool you could look at the data and see what the sensors are seeing. The Af sensors are the ones that control the fuel ratio in the car while the O2's just watch. AF's would be the one to change but there is no garuatee that the codes won't come back.

Posted on Sep 25, 2009

  • 31 Answers

SOURCE: Vibration problems in 1kz te

Check calibration. Muffler supports from the front till the back, there should be proper clearance. Is your diesel fuel of proper cetane rating for the engine? Check your belt drive system, is there any part that is excessively draining engine power, power steering pump, air con compressor, alternator or generator? Do these preliminary steps and isolate.

Posted on Nov 29, 2009

  • 3640 Answers

SOURCE: how to change a fuel bank sensor #1 code p1135 on

P1135 Air/Fuel Sensor Heater Circuit Response. (Bank 1 Sensor 1) ask any auto parts store what the fix is.

Posted on May 17, 2010

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