GS - 2nd Gen (1998-2005) Discussion about the second generation GS300, GS400 and GS430 (1998 - 2005)

2000 lexus gs300 wont run

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Old 04-26-12, 12:35 PM
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jkmfab
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ok, i checked the component, it is unrestricted, and working electronically properly, but have not checked on the car
Old 04-26-12, 01:18 PM
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GS4_Fiend
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Originally Posted by jkmfab
ok, i checked the component, it is unrestricted, and working electronically properly, but have not checked on the car
Lol. SOL then!
Old 04-26-12, 06:17 PM
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cschroder
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flow check the injectors and fuel rail
Old 04-27-12, 07:44 AM
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jkmfab
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ok, injectors check good, i am getting 8 ohms of resistance between the two pins on the vvti solenoid unplugged on the solenoid itself.
Old 04-27-12, 08:17 AM
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cschroder
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send me your email and i will send you a copy of the toyota service manual. i would start with checking your timing belt install. one tooth off and it runs like crap, 2 teeth it backfires any more than that and you have bent valves.
Old 04-29-12, 12:53 AM
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oslouie
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Please update this thread for future reference after you find out what the problem is.
Old 05-02-12, 08:12 AM
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jkmfab
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my email is jkmfab@yahoo.com, we are getting ready to flow check the injectors and fuel rail. i can make the car run by using a power probe and energizing the vvti solenoid. it runs like crap but it does run. got a few codes after running it a while, and found alot of shorted wires. rebuilt whole harness. Still i have millivolts coming out of the pcm to the vvti solenoid, if i plug the solenoid up it goes to 0 v. The solenoid is good and not shorted. I think the millivolts are residual voltage. Everything on the pcm is working properly except that one circuit.
Old 05-02-12, 09:02 AM
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So the problem is the vvt actuator as i suspected.


Originally Posted by jkmfab
my email is jkmfab@yahoo.com, we are getting ready to flow check the injectors and fuel rail. i can make the car run by using a power probe and energizing the vvti solenoid. it runs like crap but it does run. got a few codes after running it a while, and found alot of shorted wires. rebuilt whole harness. Still i have millivolts coming out of the pcm to the vvti solenoid, if i plug the solenoid up it goes to 0 v. The solenoid is good and not shorted. I think the millivolts are residual voltage. Everything on the pcm is working properly except that one circuit.
Old 05-03-12, 02:06 PM
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jkmfab
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its definately not the vvti acutator. still diaging
Old 05-07-12, 04:26 AM
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2jz manual sent
Old 05-07-12, 12:19 PM
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a little bit of an update for yall. We originally had to change the crank sprocket due to it haveing broken teeth. So we didnt think that could be happening again. I did have a wiring problem with the camshaft position sensor circuit. I fixed it and stil crank and die. So i pulled a spark plug. Before we were very lean. Now the plugs are sooted up from richness. So i went back to recheck timing and lo and behold, found one broken tooth on the new crank sprocket. The wiring harness on the #1 coil was getting very hot during cranking and come to figure out that the ecm was firing #1 twice every revolution due to the broken tooth being broken off flush. It thought #1 was up twice. Ordered another pulley gonna try it again in morning
Old 05-09-12, 07:58 AM
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ok got it running great. the new crank sprocket brok one tooth off, the knock sensor wiring harness had a short, and the camshaft position sensor harness had a short. Runs perfect now.
Old 05-09-12, 08:17 AM
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Good to hear you figured it out. How come there were shorts in the harnesses? Were they modified or just getting old??
Old 05-09-12, 09:07 AM
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Originally Posted by jkmfab
ok got it running great. the new crank sprocket brok one tooth off, the knock sensor wiring harness had a short, and the camshaft position sensor harness had a short. Runs perfect now.
Glad you got it fixed. But why didnt you guys scope out the the crank and cam relationship pattern? It would have pin pointed the problem in the beginning
Old 05-09-12, 02:22 PM
  #30  
burny
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Does the poor bastard that owns the car know about all this? Everything is new on it now so he will probably be loving life!
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