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engine surges at idle 2008 HHR SS 5 speed manual

   
Old Jan 30, 2020 | 05:44 PM
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Benn Dover
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Joined: 01-30-2020
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From: Michigan
engine surges at idle 2008 HHR SS 5 speed manual
whether it is hot or cold, clutch pressed or in nutral every time it returns to idle it surges 3-400 rpm. any thoughts Thank you for any response
no upgrades and no dtc codes witch confuses me usually means mechanical, but it runs fine
Last edited by Benn Dover; Jan 30, 2020 at 07:03 PM.
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Old Jan 30, 2020 | 06:08 PM
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Oldblue
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Welcome to the site, some information please.
mileage?
does it have the GMTU upgrade?
how long has this been occurring?
if I leave on a train from Brooklyn, oh never mind that one!
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Old Jan 30, 2020 | 07:03 PM
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Benn Dover
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no upgrades and no codes ,
couple of days
70,000
Last edited by Benn Dover; Jan 30, 2020 at 07:13 PM. Reason: update info
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Old Jan 30, 2020 | 07:25 PM
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Any possibility there’s a loose clamp in the charge pipe?
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Old Jan 30, 2020 | 07:39 PM
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RJ_RS_SS_350
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So it returns to idle, and then a little surge?
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Old Jan 30, 2020 | 07:45 PM
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Benn Dover
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yes if you start it it idles fine, after moving it surges. let the clutch out say in reverse then apply the brakes is when it happens
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Old Jan 30, 2020 | 07:48 PM
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Benn Dover
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anything is possible i haven't checked anything yet looking at possibilities before i wreak havoc
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Old Jan 30, 2020 | 09:33 PM
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Oldblue
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Vacuum leak at the brake booster?
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Old Jan 30, 2020 | 09:52 PM
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RJ_RS_SS_350
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Originally Posted by Benn Dover
whether it is hot or cold, clutch pressed or in nutral every time it returns to idle it surges 3-400 rpm.
Originally Posted by Benn Dover
yes if you start it it idles fine, after moving it surges. let the clutch out say in reverse then apply the brakes is when it happens
These statements seem to conflict. Please try to state the issue again.
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Old Jan 30, 2020 | 10:13 PM
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RJ_RS_SS_350
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It doesn't seem like you're having the issue described in this thread, https://www.chevyhhr.net/forums/ss-s...s-14468/page7/
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