Question about 1999 Toyota Land Cruiser

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Check engine light

Stays on (runs perfect) how do i reset?

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The check engine is a fault indicator, it will stay on until the fault is fixed and a certain number of miles driven to check that the fix was successful, it can' t be reset, you can erase the code with either a OBD 2 scan tool, or in some cases by disconnecting the battery for 1 hour, but if the fault is not fixed the light will come back on in short order. Very seldom do you fell anything different unless the fault is transmission related.

Posted on Sep 26, 2008

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SOURCE: Check engine light/gas cap will not stay tight.

yes the gas cap could cause this,also check evap. purge solenoid and hoses for cracks or kinks,the solenoid is on the inner fender and has 2 hoses, one to the intake and one to the canister, the most common cause of this code is a defective purge solenoid.

Posted on Apr 24, 2009

  • 160 Answers

SOURCE: 1996 subaru twin turbo runs perfectly fine but

It may just be a faulty sensor or valve. The best bet would be to take it to Autozone or another authorized diagnostics center and get it checked out so you know what the computer is telling you, and whether it's a big issue or not. At Autozone it's free. Hope it helps.

Posted on Aug 09, 2009

  • 7106 Answers

SOURCE: check engine and vsac light stay on how can i

have truck scanned some auto stores such as auto zone /advanced auto do it for free trouble codes will have to be dealt with or trouble lights will keep coming on-also when scanned ask to have it reset- other way is disconnect battery for at least a minute will clear all codes but if problem with vehicle will light up again

Posted on Oct 25, 2009

yegarboy
  • 286 Answers

SOURCE: check engine light stays on,but car runs

The light will only go off when the problem sensor or other malfunction is resolved. Auto zone or Advance auto parts will run a free diagnostic and tell you the problem. If the code is old they can remove it and all is well. You can also remove the negitive battery cable for 2 minutes to reset the code cache. hope this helps:)

Posted on Jul 01, 2010

Testimonial: "i had problem with engine light staying on.i submitted problem and had solution within 2 minutes."

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SOURCE: I have a 97 wrangler

Something odd about what you posted. An engine that is running lean shouldn't be using a lot of fuel. Lean is when there isn't enough fuel going into the engine. Two other sensors that regulate fuel flow are the map sensor and throttle position sensor. Temp sensor generally would cause a rich condition but I'd test that too. Be sure to check for vacuum leaks at the manifold and lines as well as fittings... A vacuum leak will give the O2 sensor a lean reading...seeing that, the computer will try to compensate by adding fuel. Clearing codes can change the way it's running but as soon as the computer runs through it's internal diagnostics it will turn the light back on if there is a problem.

Posted on Mar 24, 2011

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