Car sluggish, have theories, need help to diagnose
#32
Thanks Bro. Let me know when you have something.
Och, I put in the fuel filter. Like I anticipated, no change. Same thing. I still have no pull. Going to start cleaning the entire air intake track. Hopefully that does something. Are you still willing to try the maf again. Let me know.
Och, I put in the fuel filter. Like I anticipated, no change. Same thing. I still have no pull. Going to start cleaning the entire air intake track. Hopefully that does something. Are you still willing to try the maf again. Let me know.
#33
Lexus Champion
iTrader: (3)
Thanks Bro. Let me know when you have something.
Och, I put in the fuel filter. Like I anticipated, no change. Same thing. I still have no pull. Going to start cleaning the entire air intake track. Hopefully that does something. Are you still willing to try the maf again. Let me know.
Och, I put in the fuel filter. Like I anticipated, no change. Same thing. I still have no pull. Going to start cleaning the entire air intake track. Hopefully that does something. Are you still willing to try the maf again. Let me know.
#34
Advanced
iTrader: (7)
https://www.clublexus.com/forums/gs-...eleration.html
same thing as you, o2 sensors cats, maf sensor clean or replace, ecu reset, and TB clean then drive and let everything come together and the ecu will see everything is ok.
same thing as you, o2 sensors cats, maf sensor clean or replace, ecu reset, and TB clean then drive and let everything come together and the ecu will see everything is ok.
#35
Lead Lap
iTrader: (2)
T'was not plugged cats
Well let me rephrase that .... it may not be plugged/partial plugged cats.
I got my spanky new OEM MAF Sensor ($142 shipped) and WIX (dry) Air filters in the car and VOILA ! No more hesitation issues. The car seems to be back on par and I am NOT scared to pull into traffic anymore !
I've got a funeral to attend in Philly on Thursday so I'll note the mileage I'm getting with the new MAF Sensor (I was getting an abysmal 18 HIGHWAY before I changed it).
Cliff Notes: Installed OEM MAF Sensor acceleration throughout the RPM range restored.
I got my spanky new OEM MAF Sensor ($142 shipped) and WIX (dry) Air filters in the car and VOILA ! No more hesitation issues. The car seems to be back on par and I am NOT scared to pull into traffic anymore !
I've got a funeral to attend in Philly on Thursday so I'll note the mileage I'm getting with the new MAF Sensor (I was getting an abysmal 18 HIGHWAY before I changed it).
Cliff Notes: Installed OEM MAF Sensor acceleration throughout the RPM range restored.
#37
Well let me rephrase that .... it may not be plugged/partial plugged cats.
I got my spanky new OEM MAF Sensor ($142 shipped) and WIX (dry) Air filters in the car and VOILA ! No more hesitation issues. The car seems to be back on par and I am NOT scared to pull into traffic anymore !
I've got a funeral to attend in Philly on Thursday so I'll note the mileage I'm getting with the new MAF Sensor (I was getting an abysmal 18 HIGHWAY before I changed it).
Cliff Notes: Installed OEM MAF Sensor acceleration throughout the RPM range restored.
I got my spanky new OEM MAF Sensor ($142 shipped) and WIX (dry) Air filters in the car and VOILA ! No more hesitation issues. The car seems to be back on par and I am NOT scared to pull into traffic anymore !
I've got a funeral to attend in Philly on Thursday so I'll note the mileage I'm getting with the new MAF Sensor (I was getting an abysmal 18 HIGHWAY before I changed it).
Cliff Notes: Installed OEM MAF Sensor acceleration throughout the RPM range restored.
#38
So, I have done a bunch of stuff to the car so far.
I changed the fuel filter. I am no sure that these ever need to be replaced. Either way, for 15 minutes of work, and $15 to Och, it was worth a shot. (Och, I still owe you $5 so remind me when I see you). So there was no difference in performance.
Took out my plugs to check them, they look brand new. And they pretty much are.
Ordered the PCV valve, can't wait to get it.
Took off my intake, TB looked clean, MAF looked clean. Cleaned both anyway. No difference at all. Still same crap.
All together though, the performance seems to be better a little. It doesn't backfire as much, and I kind of have quarter throttle acceleration now. Still cannot floor it though.
Thanks all again, I will keep you posted.
I changed the fuel filter. I am no sure that these ever need to be replaced. Either way, for 15 minutes of work, and $15 to Och, it was worth a shot. (Och, I still owe you $5 so remind me when I see you). So there was no difference in performance.
Took out my plugs to check them, they look brand new. And they pretty much are.
Ordered the PCV valve, can't wait to get it.
Took off my intake, TB looked clean, MAF looked clean. Cleaned both anyway. No difference at all. Still same crap.
All together though, the performance seems to be better a little. It doesn't backfire as much, and I kind of have quarter throttle acceleration now. Still cannot floor it though.
Thanks all again, I will keep you posted.
#41
Instructor
This is stupid, but are you sure it's premium gas? A friend of mine's girl friend put 87 octane in the tank and had the same problem. P.S. The sulfer smell is the an additive in the gas that your particular company uses, if you don't like the smell, use a better brand of gas...
#43
This is stupid, but are you sure it's premium gas? A friend of mine's girl friend put 87 octane in the tank and had the same problem. P.S. The sulfer smell is the an additive in the gas that your particular company uses, if you don't like the smell, use a better brand of gas...
#44
Lexus Champion
iTrader: (10)
Have you tested the coil pack? The cat can't be clogged that bad. Maybe you can swap'm when your buddy comes over. It shouldn't take much time to swap...just remember who owns which
edit: you should get CEL if one of the coilpacks go bad...but worth a try though.
edit: you should get CEL if one of the coilpacks go bad...but worth a try though.
Last edited by sam430; 04-29-09 at 10:32 AM.