arron1995 Posted September 13, 2022 Share Posted September 13, 2022 as the title says, when im driving a long and it doesnt matter what gear/speed im doing, when i let off the throttle the rpm needle jumps around and its quite annoying, has anyone had this issue and what was the cause, thanks. car is a manual and its been smoke tested and nothing found leak wise. Quote Link to comment Share on other sites More sharing options...
cliffcoggin Posted September 14, 2022 Share Posted September 14, 2022 Does the engine speed also go up and down, or is it just the tachometer reading that changes while the engine speed is constant? Is this the same jalopy you asked about in June and failed to inform us of the outcome? Quote Link to comment Share on other sites More sharing options...
Steve Q Posted September 17, 2022 Share Posted September 17, 2022 I'd recommend a diagnostic check to see if any fault codes flag up. Worth getting the MAF and lambda sensor looked at. Quote Link to comment Share on other sites More sharing options...
arron1995 Posted September 17, 2022 Author Share Posted September 17, 2022 3 hours ago, Steve Q said: I'd recommend a diagnostic check to see if any fault codes flag up. Worth getting the MAF and lambda sensor looked at. absolutely no fault codes mate, i did have a vacuum leak caused by the downpipe which was fixed, maf is fine, lambda sensors havent been looked at though i dont think. Quote Link to comment Share on other sites More sharing options...
arron1995 Posted September 17, 2022 Author Share Posted September 17, 2022 On 9/14/2022 at 9:27 AM, cliffcoggin said: Does the engine speed also go up and down, or is it just the tachometer reading that changes while the engine speed is constant? Is this the same jalopy you asked about in June and failed to inform us of the outcome? sorry mate i thought i had replied, this is a different car, only the rpm needle flickers. Quote Link to comment Share on other sites More sharing options...
Steve Q Posted September 18, 2022 Share Posted September 18, 2022 When you say the needle flickers is it just the needle or is the engine revs definitely off. Quote Link to comment Share on other sites More sharing options...
arron1995 Posted September 18, 2022 Author Share Posted September 18, 2022 12 hours ago, Steve Q said: When you say the needle flickers is it just the needle or is the engine revs definitely off. Literally il let off the throttle or when I blip when I’m driving the rpm needle will flicker, it doesn’t do this if I am stationary and rev, only when driving. It also happens when I am driving downhill without touching the clutch or accelerator. My rocker cover gasket is leaking but dno if that will have any affect on this scenario. Quote Link to comment Share on other sites More sharing options...
Steve Q Posted September 18, 2022 Share Posted September 18, 2022 Could it be clutch related? Quote Link to comment Share on other sites More sharing options...
arron1995 Posted September 18, 2022 Author Share Posted September 18, 2022 23 minutes ago, Steve Q said: Could it be clutch related? i was thinking this but it was mapped recently by r-tech and they said my clutch was spot on. someone mentioned something about a clutch switch to me. Quote Link to comment Share on other sites More sharing options...
Steve Q Posted September 21, 2022 Share Posted September 21, 2022 On 9/18/2022 at 9:02 PM, arron1995 said: i was thinking this but it was mapped recently by r-tech and they said my clutch was spot on. someone mentioned something about a clutch switch to me. Could be the switch. Was it doing it prior to the remap? Quote Link to comment Share on other sites More sharing options...
arron1995 Posted October 24, 2022 Author Share Posted October 24, 2022 On 9/21/2022 at 7:28 AM, Steve Q said: Could be the switch. Was it doing it prior to the remap? sorry for the late reply steve, its done it since i bought it, so prior to the map. Quote Link to comment Share on other sites More sharing options...
Steve Q Posted October 25, 2022 Share Posted October 25, 2022 I'd definitely look at getting the switch looked at. Quote Link to comment Share on other sites More sharing options...
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