Question about 1999 Lexus LS 400

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1999 lexus ls400 coil packs

Just change 4 coil and still have 4 old was that was misfireing gonna get new ones in next week but I noticed that the car runs good but when I come to a stop idle lower and feels like its about too shut off pls help what else could it be besides chaning all coil pacts did the spark plugs already

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  • Lexus Master
  • 6,098 Answers

Bad wires,IAC sensor,dirty throttle body.Next could be TPS sensor[RPM].

Posted on May 22, 2013

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE:

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Posted on Jan 02, 2017

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  • 4 Answers

SOURCE: 1993 LEXUS ES300 FLOODING AND FUEL VAPOR OUT

Check air intake tempture sensor and engine control tempture sensor both will cause this problem don't rule out MAF but before u do any thing check for codes most lexuse will give u a code which is very helpful

Posted on Feb 15, 2013

farroutideas
  • 78 Answers

SOURCE: 96 lexus es 300 blinking check engine light

Hi there;

#4 Miss-fire. All the things you are saying make a lot of sense. When the light is blinking the cylinder is actualy misfiring, & the smell you are smelling is the fuel that is not burning in the engine burning in the exahst. This can cause a lot of damage to the exausht if it is not repaired..
There is still a couple of things that need to be checked, first he needs to check to see if it is possibly a fuel injector that is sticking. He can do this easily by moving the #4 injector to another cylinder & run the car. When it starts missfiring he will need to see if it is still #4 or if it is the cylinder that he moved the injector to. if it is the new cylinder it is obviously the injector, if it is still #4 he will need to look into the possibility of the EGR valve sticking open or some other issue to do with valve timing or low compression.
I hope this helps
Farrout!

Posted on Mar 17, 2009

  • 66 Answers

SOURCE: 91 lexus ls400 "fuel sensor?"

call your local dealer for the sensor.

Posted on May 05, 2009

BBMIKE1
  • 15 Answers

SOURCE: I have a 92 Lexus LS400 it won't start. It was

try giving it a jump or re-charging the battery too.

Posted on Jul 02, 2009

  • 51 Answers

SOURCE: 1999 lexus es300 how to find cylinder no.3 and 4 ?

the front bank is bank 2, the rear one is bank one. The cylinders go from the timing belt side to the right. So 3 is the middle on the back bank, and four is the middle cylinder on the front bank. They are both in the middle so just replace them.

Posted on Aug 26, 2009

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1 Answer

How do I fix cod po301


Hello Carlos,
It is a common problem with '99 Cady (Random Misfire Detected)
  • Start the car and carefully pull the plugs boot out one by one, and put it right back (a few seconds is enough).
  • Take Notice of of which one is affecting the RPM of the engine ( slowing down and and shaking erratically).
  • With the engine Off.
  • Use the appropriate socket and again one by one take out the spark plugs and check them for oil and heavy residue build up.
  • If there is Oil in anyone of plugs, take the car to mechanic and let him or her do an evaluation or diagnostic.
  • You probably need new coil packs and spark plugs.
  • Change the oil and the air filter too, if they are dirty.
  • Check also the fuel filter.
  • If the code does not go away by itself, have it reset by a mechanic.
Best of Luck,
JP

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1999 lexus es300 how to find cylinder no.3 and 4 ?


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