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RX-7 2nd Gen Specific (1986-92) RX-7 1986-92 Discussion including performance modifications and technical support sections.

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Old 03-25-2011, 03:01 PM   #1
infernosg
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Originally Posted by josh18_2k View Post
all my fc's have had a decent amount of lash. it could just be the transmission. put it in gear (car off), and twist the driveshaft by hand to see
The more I read, the more this comes up. Some people say adjusting the TPS helps, but I'm fairly certain mine reads within acceptable limits. I'm going to get the car in the air later today to check things out - specifically the driveshaft and halfshafts.

What has me shitting bricks right now is the metallic "thunk" I'm getting during these on/off throttle inputs. Experience tells me the differential backlash is off, but I was ASSURED by a transmission/differential shop it was okay. My only other theory is that this noise is always around and that it isn't until after installing semi-solid mounts that it becomes audible.
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Old 03-26-2011, 06:17 AM   #2
Pete_89T2
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Originally Posted by infernosg View Post
The more I read, the more this comes up. Some people say adjusting the TPS helps, but I'm fairly certain mine reads within acceptable limits. I'm going to get the car in the air later today to check things out - specifically the driveshaft and halfshafts.
Who's telling you that adjusting the TPS (throttle position sensor) helps with drivetrain lash? Bad advice - adjusting the TPS has absolutely nothing to do with drivetrain lash.
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