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| what are the main variables in getting a nice clean and consistent idle? | |
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| Tweet Topic Started: Tue Jun 23, 2009 6:52 pm (748 Views) | |
| newowner | Tue Jun 23, 2009 6:52 pm Post #1 |
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Part of things
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my idle in my 2.5-16v is a little wobbly. it does not make it stall or is high or is dramatic enough to signal a serious problem. I understand the older the engine gets the more unstable the idle gets but why and what can be done to smooth it out a little???
Edited by newowner, Tue Jun 23, 2009 7:09 pm.
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| Enthusiast | Tue Jun 23, 2009 9:05 pm Post #2 |
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Could be many things you'll need to be more specific there areloads of threads on this. eg My problem was cold start valve which caused variable idle but only when cold |
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| rhysmangatmotorsport | Tue Jun 23, 2009 9:30 pm Post #3 |
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Mangatmotorsport
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could be a 3 thing change, cold start valve, idle valve, throttle sensor switch..... |
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| newowner | Tue Jun 23, 2009 9:41 pm Post #4 |
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there is not much to be specific about. it is not erratic and is not different at cold or hot. i think one of those three things has already been replaced - idle air valve i think (on the RHS of the engine midway along on the top side looking from the front?) where are the other things and how do they cause problems? |
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| viffer | Tue Jun 23, 2009 10:21 pm Post #5 |
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V4 Power
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Start with the basics, plugs, leads, dizzy cap and rotor arm and then get it tuned, then see what the idle is like. HTH |
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| RobertE | Tue Jun 23, 2009 10:48 pm Post #6 |
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Serial victim...
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Checking the throttle plate for accurate clearance can help a lot. It's pinned up in the engine section. |
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| rhysmangatmotorsport | Tue Jun 23, 2009 11:10 pm Post #7 |
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Mangatmotorsport
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Unstable idle can be the engine mounts as well, if these are gone it could cause the car to run with a shake. grab the engine and rock it when cold, if there is a lot of movement and noise, possible there gone... |
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| alfagtv | Wed Jun 24, 2009 4:24 pm Post #8 |
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slight idle misfires were a bugbear of mine. Car ran fine otherwise but I'm fussy. in the dark always noticed arcing to the cylinder head no matter what plugs and leads I used...I just lived with it! Finally fixed with some merc leads....for now! |
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| olliecampbell | Thu Jun 25, 2009 4:10 pm Post #9 |
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Part of things
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Mine ran a little shakily for about 3 weeks after I brought it back into use. Previously it was sat unused for 6 months. Maybe some injector cleaner and a couple of tanks of Optimax? |
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| newowner | Fri Aug 7, 2009 10:22 pm Post #10 |
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right i have changed the plugs, dizzy cap, rotor arm and leads and still getting an uneven idle which sometimes stalls espeacilly when the revs divebomb like when putting the clutch down quickly have checked out this throttle plate clearance and it sounds pretty tricky.....is there any easy way i can find out if this is a problem?? still need to check the throttle switch....is this the micro switch which the throttle cable touches at idle?? it deffinitely clicks shut when throttle released |
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9:18 AM Jul 11