2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

Bad throttle response on of our 7?

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Old Oct 17, 2004 | 01:11 AM
  #1  
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Bad throttle response on of our 7?

i've never actually seen a tread of this sort but i would like to know peoples opinions.

in my rx7, whenever i have to shift up to my next gear. i always get what i belive is a throttle lag. i can always see this as the rpm jump an extra 300-450 rpm then come rolling down as decelation continues. when i let go of the clutch. car the clutch grabs it and drops the rpms down to it's speed / rpm range.

for example if im at 2k and i let go of the gas then press the clutch. the rpm will jump go to 2300-2400 rpms till i engage the clutch. now my feet work quick so as soon as i release the gas i press the clutch. i give it at about only about a 1/2 sec before i release the clutch. that's with normal diving when im not trying to shift fast. i only get this when im under 4k rpms

is it normal to see this slow throttle response from the lower rpm range?
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Old Oct 17, 2004 | 01:25 AM
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mine doesnt do it...anyone else?
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Old Oct 17, 2004 | 01:32 AM
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From: OC
dashpot adjustment?
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Old Oct 17, 2004 | 01:38 AM
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From: Mission,KS
Mine doesnt do that either. Never heard of a problem w/ fc's like that.
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Old Oct 17, 2004 | 01:57 AM
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Mine did that until I adjusted the dashpot.
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Old Oct 17, 2004 | 02:24 AM
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From: sf
yes

Yup, my 87 manual does that too. If I'm at 2,000 rpm and I clutch in, it jumps to 2,100-2,200 rpm, then when I let it grab again it drops.
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Old Oct 17, 2004 | 02:26 AM
  #7  
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From: Rutgers
lack of torque?....
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Old Oct 17, 2004 | 12:23 PM
  #8  
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From: SoCal
Could also be the TPS, if it has a spike in exactly a certain region it will do this. Make sure you check it with an analog ohm meter to see if there are spikes... it's something you should check anyway.

When mine finally went out it would constantly try to rev the car up to ~3k if the clutch was in, but not while it was out, it would have no effect when it was out.

--Gary
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Old Oct 17, 2004 | 01:36 PM
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From: calgary alberta
I dont believe that its a dashpot adjustment issue, im bettin on the tps.
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Old Oct 17, 2004 | 02:18 PM
  #10  
WAYNE88N/A's Avatar
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From: Coldspring TX
Read your sensors out at the ECU to make sure everything's working right, including the TPS (also hit the AFM & boost sensor).

Don't push the clutch before you take your foot of the gas, too
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Old Oct 17, 2004 | 02:27 PM
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From: Victoria, BC
Why you shiftin at 2 grand **** man open that baby up...its probably just pissed at you for not shiftin in the proper power band.
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Old Oct 17, 2004 | 02:47 PM
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From: Lampasas, TX
Mine does that while cold. It's possible that its either a bad dashpot (which I need to replace), vaccume leak, or as stated above your TPS.
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