Torquemaster Plugs
Lexus Test Driver
Joined: Jun 2001
Posts: 1,580
Likes: 19
From: California
Re: Still have them in the engine...
Originally posted by ChuH
Yes I have a 2001 GS430 and not a GS400.
The TM plugs are in for about 4000 miles. I was going to remove them and put the Iridium plugs back in awhile ago but up till now I am still debating. Because there is a noticible difference in performance with the TM plugs. I can tell that it revs faster (better response) and pulls harder (increase torque). Also there is less hesitation in my opinion.
The problem I have is the minute engine shakes and rough exhaust tones when the engine is cold (most noticible especially early morning). I also notice that the car shake a little when I arrive home at night when air gets cooler. During the day the engine runs fine and barely can tell the shakes. Guam's temperature is between low 70s to low 90s with very high humidity may have something to do with it. The other problem is if I am in park (no load) and rev steadily at 2000 rpm the engine would shake and simultaneously a low popping exhaust sound can be heard (misfiring). If I reset the ECU the shake and sound is even worse therefore I stop resetting the ECU since installing the TM Plugs. Don't need to let the ECU relearn again.
If I were to get the SRT intake & ECU I think the TM plugs would work even better. But right now I sticking with stock intake due to mostly city driving.
Chu...
Yes I have a 2001 GS430 and not a GS400.
The TM plugs are in for about 4000 miles. I was going to remove them and put the Iridium plugs back in awhile ago but up till now I am still debating. Because there is a noticible difference in performance with the TM plugs. I can tell that it revs faster (better response) and pulls harder (increase torque). Also there is less hesitation in my opinion.
The problem I have is the minute engine shakes and rough exhaust tones when the engine is cold (most noticible especially early morning). I also notice that the car shake a little when I arrive home at night when air gets cooler. During the day the engine runs fine and barely can tell the shakes. Guam's temperature is between low 70s to low 90s with very high humidity may have something to do with it. The other problem is if I am in park (no load) and rev steadily at 2000 rpm the engine would shake and simultaneously a low popping exhaust sound can be heard (misfiring). If I reset the ECU the shake and sound is even worse therefore I stop resetting the ECU since installing the TM Plugs. Don't need to let the ECU relearn again.
If I were to get the SRT intake & ECU I think the TM plugs would work even better. But right now I sticking with stock intake due to mostly city driving.
Chu...
Do you still have the rough engine/ shaking? That's exactly the same symptom that my car (GS400) has as you described it. If you have any solutions, please let me know. Thanks.
Instructor
Joined: Mar 2001
Posts: 1,189
Likes: 15
From: Guam
Re: Re: Still have them in the engine...
Originally posted by whitels
Chu...
Do you still have the rough engine/ shaking? That's exactly the same symptom that my car (GS400) has as you described it. If you have any solutions, please let me know. Thanks.
Chu...
Do you still have the rough engine/ shaking? That's exactly the same symptom that my car (GS400) has as you described it. If you have any solutions, please let me know. Thanks.
After installing the Teck Grounding Kit the rough engine idle has almost disappear. If I reset the ECU the rough engine idle would return for a few miles (about 10 miles) then disappear. Before the grounding kit I would get rough idle whenever I am in park position I now don't have this problem. My guess is that more electrical energy is available for the spark firing with the grounding kit.
Chu...
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