Question about 1992 Lexus Sc 300

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Will not start when warm

My 92 lexus sc300 will start and run fine when cold but after it is at running temp. when i shut it off it WILL start but only run for 2 to 5 seconds then shut off. Once the motor is cooled off the car will start and operate fine. i have replaced throtle pos. sensor, fuel pump, and mass air flow sensor. also it dose not show a check engine lite. If you have any ideas please send me an email at clericj@gmail.com. Thanks.



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Check the coolant temp sensor for the computer side.will cause simular problems.

Posted on Jun 17, 2009

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I changed the 02 Sensors on my 03 Mitsubishi Galant do I need to reset anything on my car? It turns on fine but idles low when put in gear and shuts off.


Its a hot start issue.

Can be related to low fuel pressure or problem with crank sensor.


Also it can be weak battery or starter.


But possibilities are to be inspected to confirm what exactly it is.------


To troubleshoot and confirm the issue,i suggest you refer few solved help links with similar types of problem like yours:------


Click the link below:------


1991 Toyota Trecel: Engine Starts fine but dies when gets Warm?

http://whatisbyme.blogspot.in/2012/05/1991-toyota-trecel-engine-starts-fine.html

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1994 Toyota Pickup: Starts fine but dies in few seconds?


http://howtobyme.blogspot.in/2012/05/1994-toyota-pickup-starts-fine-but-dies.html

------------

1995 Lexus LS400: Running Hot?

http://whatisbyme.blogspot.in/2012/05/1995-lexus-ls400-running-hot.html

------------

2002 Toyota Camry: Puff of Blue or White Smoke while Starting?

http://whatisbyme.blogspot.in/2012/05/2002-toyota-camry-puff-of-blue-or-white.html

------------

Multiple problems on car: Car runs hot, A/C blows hot and car starts surging?

http://schematicsdiagram.blogspot.in/2012/04/multiple-problems-on-car-car-runs-hotac.html

--------------

Delay starting on Toyota Prius?


http://schematicsdiagram.blogspot.in/2012/02/delay-starting-on-toyota-prius.html

-----------

Honda car will not start intermittently?

http://technoanswers.blogspot.in/2012/02/honda-car-will-not-start-intermittently.html

--------------

Vehicle Starts, Runs and Loses Power

http://whoisbyme.blogspot.in/2012/07/vehicle-startsruns-and-loses-power.html

--------------

Intermittent starting issues on Volvo 760?

http://schematicsdiagram.blogspot.in/2012/02/intermittent-starting-issues-on-volvo.html

-----------

Car starts and cuts off immediately?

http://repairhelpcenter.blogspot.com/2012/01/car-starts-and-cuts-off-immediately.html

-----------

Car won't start when cold?

http://schematicsdiagram.blogspot.com/2011/12/car-wont-start-when-cold.html

===========

These details will help.

Thanks.

Nov 28, 2012 | 2003 Mitsubishi Galant

3 Answers

Lexus SC300 95 Several tries before starting.


Have the charging system checked out. The battery,alternator,and starter.Also if all of this checks out you may have a battery draw(something draining the battery). If you use your car every day it will never show up.

Jul 26, 2009 | 1994 Lexus GS 300

2 Answers

1995 Lexus SC300 looses power as temp increases.


could be clogged cats or may even be bad crank sensor.

Jul 06, 2009 | 1992 Lexus Sc 300

1 Answer

1992 Lexus SC300 Air Condtioner blowing cool/warm


the system is low on charge, it has a leak, repair the leak and recharge

Jun 17, 2009 | 1992 Lexus Sc 400

2 Answers

The fan motors keeps running after car is shut off. Also sometimes fans start when car is started cold.


If the fans didn't run any further the engine continues to warm and possible seizure will occur. This is also the reason you will probably go through batteries in the long run. Hopefully this helps the issue you are having.

May 25, 2009 | 2003 Mazda MPV

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