aparker

Did you ever get this issue resolved I am having the same issue; however my lights go completely dark when I turn on the headlights. Thanks!

Help! After immediately changing my battery, my dash lights no longer worked. When the head lights are turned on (not auto), the dash lights go completely dark; however, when the head lights are in auto the lights are very dim. I am thinking this is some kind of relay. Anyway, someone please englighted me. I have a 1999 GS 300.

Looks like Seafoam fixed my hesitation problem. No hesitation in 1.5 weeks. Thanks to everyone that made suggestions and especially to Menappi for his Seafoam suggestion. He saved me a ton of money and aggravation. Thanks. Have you had any hesitation since??? Lexus diagnosed mine with clogged catalytic converters; howver, that didn't fix the problem. So they replaced the wires and the coil packs. This solved the problem. So if you still have the problem this might be a place to look. The symptoms you described were identical to mine, but they are gone now. FINALLY!

Well, I got so sick of the problem and broke down and took my gs to the dealership for a diagnostics. I should have the source monday. I'll keep everyone posted. After $150 of diagnostics at the lexus dealership, they came up with a clogged catalytic converter. The car was sent to an exhaust specialist and they did temperature readings of the inlet and outlet of the catalytic converter and found that one was clogged. Now, here is the bad news...really bad news, the converters are part of the entire exhaust manifold so in order to replace the converters one would need to replace the whole assembly and an assembly from Lexus is $900 and installation and other parts total up to $1400. On the other hand, you can cut out these converters and weld one in its place. If you took this route, depending on who you went to, would cost roughly $600. There you go. I'll let everyone know if this works. Sorry to hear about the $ you're having to spend, but I guess it will be worth it if it fixes the problem. It's cheaper than trading cars!!!! I'm not a mechanic, but it seems like you would have constant performance problems instead of intermittent it the CC was clogged. Update on my SeaFoam try. I'm now on my third day without SeaFoam in my tank and the hesitation problem has not occurred once and performance is better. The jury is still out, but so far so good. I'll let you know the results in a couple of days. Where do you get seafoam and do you just add it to the tank? I want to try it before I go and spend money on new converters.

Well, I got so sick of the problem and broke down and took my gs to the dealership for a diagnostics. I should have the source monday. I'll keep everyone posted. After $150 of diagnostics at the lexus dealership, they came up with a clogged catalytic converter. The car was sent to an exhaust specialist and they did temperature readings of the inlet and outlet of the catalytic converter and found that one was clogged. Now, here is the bad news...really bad news, the converters are part of the entire exhaust manifold so in order to replace the converters one would need to replace the whole assembly and an assembly from Lexus is $900 and installation and other parts total up to $1400. On the other hand, you can cut out these converters and weld one in its place. If you took this route, depending on who you went to, would cost roughly $600. There you go. I'll let everyone know if this works.

Well, I got so sick of the problem and broke down and took my gs to the dealership for a diagnostics. I should have the source monday. I'll keep everyone posted.

I took it out a blew it out. Should I try to clean it with a liquid? If cleaning does not work, I'll replace it. Thanks for your help. I have heard you can dip it in rubbing alcohal then let it dry. But to be honest its a pretty cheap part so its probably worth it to just get a new one. Might help with MPG as well as performance. I think they sell refurbish ones, if you buy a refurb just make sure it comes with a warranty. J Have you ever reset the ECU ? TPS ? How do you do that?

I've been told that 99 GS300 has a lifetime fuel filter located in the gas tank located under the back seat. I think I'll replace it anyway and try your Seafoam idea. Thanks for your suggestions. Ok, please do I am in desperate help! Please do and feel free to email me at ashtonparker@hotmail.com. If I have any luck i'll let you know as well. OK. I know how aggravated you must be. I know I am. I'm getting close to the point of getting rid of the car if I can't find the problem soon. I am the same way; I am about there myself. Do you think I should try and change plugs, wires, and clean injecters or do you think that is a dead end? My car only has 75k miles. I am just fed up! These cars are supposed to last. Let me know if you have any luck with the fuel filter. Thanks.

I've been told that 99 GS300 has a lifetime fuel filter located in the gas tank located under the back seat. I think I'll replace it anyway and try your Seafoam idea. Thanks for your suggestions. Ok, please do I am in desperate help! Please do and feel free to email me at ashtonparker@hotmail.com. If I have any luck i'll let you know as well.

I have a 99 GS 300 also, and I am having the same exact problem. Have you had any luck solving this problem? If so can you provide some insight. Your help would be greatly appreciated.