eph320mw Posted April 1, 2004 Share Posted April 1, 2004 My 93 GS 300 hesitates until it is fully warm. It is dangerous to merge into traffic. This does not happen during the first start up of the day...only after it has stopped and partially cooled down. One Lexus mechanic said that the "Air Flow Meter" might be the problem...so I bought a used AFM and had the same problem. Thanks for the input. Quote Link to comment Share on other sites More sharing options...
bbsal Posted April 2, 2004 Share Posted April 2, 2004 i had a problem just like that with my es300 and it was just in need of a good tune up.also tyr a good fuel cleaning.if it still does it then it must be a sensor somewere faulting out.first try the tune up and fuel and see if it works. Quote Link to comment Share on other sites More sharing options...
TurboGS300 Posted April 3, 2004 Share Posted April 3, 2004 My 93 GS 300 hesitates until it is fully warm. It is dangerous to merge into traffic. This does not happen during the first start up of the day...only after it has stopped and partially cooled down. One Lexus mechanic said that the "Air Flow Meter" might be the problem...so I bought a used AFM and had the same problem. Thanks for the input. It's tune up time! Repalce cap and rotor, plugs and wires. Should help a lot! Next, change the fuel filter, and use 91 octanne like the manual calls for. As bbsal pointed out drop in some fuel injector flush or take it to a shop for a flush. Replace and flush trans fluid. new filter. clean throttle bodies and do a water flush. Car will run like new :P Also check for loose or leaking vacuum lines as well. Check 02 sensors as well, they should have been replaced at 60 thousand miles. If not , repalce them. Quote Link to comment Share on other sites More sharing options...
eph320mw Posted April 3, 2004 Author Share Posted April 3, 2004 Thanks for the advice. I will change the cap, rotor, plugs and wires and do the other maint. procedures you both mention. I do and always have used 91 octane. I have cleaned the injectors. Thank you for taking the time to respond. Quote Link to comment Share on other sites More sharing options...
BRAKATK Posted April 9, 2004 Share Posted April 9, 2004 After the tune up, might want to reset the ECU as well. Quote Link to comment Share on other sites More sharing options...
eph320mw Posted April 9, 2004 Author Share Posted April 9, 2004 Thank you, I will also reset the ECU after the tune up. You all are awesome! Quote Link to comment Share on other sites More sharing options...
eph320mw Posted April 18, 2004 Author Share Posted April 18, 2004 I did the complete tune up and the problem was solved. Thanks for all the advice. Quote Link to comment Share on other sites More sharing options...
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