Question about Lexus SC 400
My 1993 Lexus sc 400 will start and run fine the first time out but any time I try to start it after that, it will start and then choke itself off. It happens even if I stop for a quick errand. I can't rev it up. It sounds as if the exhaust is sputtering and then it quits. Usually I can turn it over 3-4 times and it will eventually stay running. There is no common denominator when it happens. Any suggestions?
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Posted on Jan 02, 2017
Check the fuel pressure regulator. generally "failure" position is full open which will richen up the fuel mixture. also check vacuum line to the regulator for cracks and good connection.
Posted on Jun 06, 2009
Start with replacing the fuel filter. The Aveo fuel filter is located passenger-side rear, in front of the
If there is no filter there, then the filter is a non serviceable filter and is integrated with the fuel sending unit. Your going to have to replace the fuel sending unit if the fuel pressure is slow, start with running fuel injector cleaner through the fuel system for the next few fill up's and hope that will clear up the issues your having.
The other thing to is that your IAC (idle air control) valve may be dirty and is stuck close, you can try cleaning it by spraying Throttle body cleaner through the throttle body, paying attention to the IAC passageway. A dirty of faulty EGR valve will also do the same thing.
Start with the simple and inspect to see if you do have a external fuel filter, and inspect the wire leads to the IAC, EGR and clean them with throttle body cleaner. Don't forget to run the fuel injector cleaner through your gas tank.
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Posted on Apr 17, 2010
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