Slight vibration at idle
06-30-15, 05:56 PM
#1
Pit Crew
Thread Starter
Slight vibration at idle
Has anyone experienced slight vibration at idle with the ac on ranging from 780-825rpm n causes shaking. Don't remember it ever doing it before. Also once I off the ac it goes away. Also the car started dropping rpm a little when slowing down.
06-30-15, 07:06 PM
#2
My car vibrates alot when i have the A/C on too but I started noticing that this year. it doesnt vibrate when off too. Not sure if its normal this car does have alot of vibrating problems... Well the car should drop RPM's when slowing down as long as you're not under 700-600 you should be fine....
07-01-15, 07:22 AM
#4
If it's an 06 GS 300 it's probably carbon buildup. And either the end of your car or a $6300 repair bill for new piston rings. And eventually you'll still have the same problem.
07-01-15, 11:50 AM
#5
Pit Crew
Thread Starter
It's a 07 gs350 all maintenance has been performed at the dealer so shouldn't be carbon build up cuz it was performed on Lexus recommendation. It drives perfectly fine it's just when the car is coming to a stop it hesitates a little because of the way the car downshifts and it doesn't have no ticking either. So that's what got me confused.
07-01-15, 07:27 PM
#6
It's a 07 gs350 all maintenance has been performed at the dealer so shouldn't be carbon build up cuz it was performed on Lexus recommendation. It drives perfectly fine it's just when the car is coming to a stop it hesitates a little because of the way the car downshifts and it doesn't have no ticking either. So that's what got me confused.
- Have u flushed the tranny? I haven't flushed mines and its been having rough shifts up and down... but its only gears 1-3.... Also could be solenoids anybody know? Does resetting ECU ( removing negative battery) work?
07-01-15, 07:50 PM
#7
If it vibrates when a/c only that means the compressor is putting to much load on the engine. A lot of times because of dirt buildup between the radiator and condenser, easy fix, spray it out with a garden hose and some good pressure. Hit the front of the condenser first, cleaning the fins real good. Then the front side of the radiator as best you can. For best results blow out the fins with compressed air to finish
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07-01-15, 08:43 PM
#8
If it vibrates when a/c only that means the compressor is putting to much load on the engine. A lot of times because of dirt buildup between the radiator and condenser, easy fix, spray it out with a garden hose and some good pressure. Hit the front of the condenser first, cleaning the fins real good. Then the front side of the radiator as best you can. For best results blow out the fins with compressed air to finish
07-01-15, 08:54 PM
#9
The condenser is right behind the grill/front bumper and the radiator is right behind that, there's about a half inch gap between the two that should be cleaned once in a while. Just don't have the engine running and you shouldn't have any problems
Be sure not to bend any of the fins on the condenser or radiator, as we are trying to increase airflow through the two, and flattening these fins will do exactly the opposite and could cause poor a/c performance and even overheating, good luck.
Be sure not to bend any of the fins on the condenser or radiator, as we are trying to increase airflow through the two, and flattening these fins will do exactly the opposite and could cause poor a/c performance and even overheating, good luck.
Last edited by sprtn131; 07-01-15 at 09:04 PM. Reason: forgot to mention...
05-27-21, 08:11 AM
#11
Maintenance but no resolving.
This just be how the car behaves after age? I have done mass airflow cleaning throttlebody Cleaning had the transmission flushed replace serpentine belt idler pulley and tensioner pulley all of this at 100k it fixed little bit of the vibrations but not fully whenever I come to stops I still get these vibrations and I’m just trying to pinpoint what it is and get the part replaced whenever I can but like I said the pulleys and belts did help a little bit.
05-27-21, 08:39 AM
#12
This just be how the car behaves after age? I have done mass airflow cleaning throttlebody Cleaning had the transmission flushed replace serpentine belt idler pulley and tensioner pulley all of this at 100k it fixed little bit of the vibrations but not fully whenever I come to stops I still get these vibrations and I’m just trying to pinpoint what it is and get the part replaced whenever I can but like I said the pulleys and belts did help a little bit.
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GS - 1st Gen (1993-1997)
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