 Runability, Looking for advise... Problem Solved |
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| jagalyn |
 Sep 26 2018, 06:38 PM
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#1
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True Patina  Group: Members Posts: 414 Joined: 31-January 06 From: Scandia, MN Member No.: 5,503 Region Association: None 
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Looking for advise.
I have a 2.0 liter that runs great under power/acceleration but when feathering the pedal at a constant speed tends to buck slightly. Is there someone that can give me some advise as to what would cause this? Thank you. |
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| wndsrfr |
Sep 26 2018, 06:40 PM
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#2
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Senior Member Group: Members Posts: 1,430 Joined: 30-April 09 From: Rescue, Virginia Member No.: 10,318 Region Association: MidAtlantic Region
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Might be the TPS--throttle position sensor board needs to be cleaned...there's a thread about it somewhere here....not hard to do....
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| VaccaRabite |
Sep 26 2018, 06:44 PM
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#3
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En Garde! Group: Admin Posts: 13,456 Joined: 15-December 03 From: Dallastown, PA Member No.: 1,435 Region Association: MidAtlantic Region |
QUOTE(jagalyn @ Sep 26 2018, 08:38 PM)  Looking for advise. I have a 2.0 liter that runs great under power/acceleration but when feathering the pedal at a constant speed tends to buck slightly. Is there someone that can give me some advise as to what would cause this? Thank you. Stock injection or carbs or modern injection? Zach |
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| jagalyn |
Sep 26 2018, 07:39 PM
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#4
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True Patina Group: Members Posts: 414 Joined: 31-January 06 From: Scandia, MN Member No.: 5,503 Region Association: None
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Original injection with new injectors within the last 4 years.
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| ConeDodger |
Sep 26 2018, 07:56 PM
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#5
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Apex killer! Group: Members Posts: 23,606 Joined: 31-December 04 From: Tahoe Area Member No.: 3,380 Region Association: Northern California
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Look at the cfr Racing website. They have a new PCB I think, or was that spoke? The spot the feeler is always at, usually right where you cruise gets gummed up and causes bucking at steady state driving.
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| jagalyn |
Oct 2 2018, 10:39 AM
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#6
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True Patina Group: Members Posts: 414 Joined: 31-January 06 From: Scandia, MN Member No.: 5,503 Region Association: None
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Replaced the Throttle Position Sensor circuit board purchased from 914Rubber today. What a difference. Going from slight bucking at cruise and beginning of acceleration to absolute smooth in all throttle positions.
My old circuit board was original and 45 years old so it has seen better days. If you are having any of these problems I highly recommend doing this simple modification. 45-60 minutes max and super simple with videos to walk you through the process. I love my car!!! Here is my old board... pretty worn!  |
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