Does Icv Affect Takeoff? - BMW Forum - BimmerWerkz.com
3-Series (E36) Chat relating to the BMW 3-Series from 1992-1999. Autodoodad Specific models include: BMW 316i, BMW 318i, BMW 318iS/ti, BMW 320, BMW 323, BMW 320, BMW 324, BMW 325, BMW 328.

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#1 (permalink) Old 07-01-2005, 09:37 AM
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Ok I KNOW my ICV is dirty, Im having idling problems

but It seems on some days, like my "takeoff" from a start is kinda well laggy, I know mines an auto, but still it seems a little laggy, sometimes tho, not all the time

So I was wondering, couldnt the ICV affect takeoff and stuff, cause im barely idling over .5g's?


and sometimes Ill let my foot of the gas to like go up a turn, and it just like feels like a dippage in the rpm like holds me back

any ideas, I figure the second problem may be o2 sensor or mass air flow sensor?
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#2 (permalink) Old 07-01-2005, 11:26 AM
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Idle control valve should not change the way the engine throttles. The throttle has MUCH more influence on how much power the engine makes. However, if you idle is extremely low, it could lead to a long reaction time.

Why not replace the ICV, and then troubleshoot?

Greg

97 328iS, Manual, Stock
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#3 (permalink) Old 07-01-2005, 12:22 PM
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Yeah thats what I meant, it takes a long reaction time
but I have a 93 325is, and Have no idea where the icv is, i'd like to get one of those bentley manuals
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#4 (permalink) Old 07-01-2005, 12:38 PM
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#5 (permalink) Old 07-01-2005, 01:15 PM
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I thought the ICV was like bigger
plus that says idle regulating valve LOL!


amnyone is that picture right, cause if so then it should be easy to clean?
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#6 (permalink) Old 07-01-2005, 03:04 PM
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If your throttle response is not good, you should test the Throttle Position Sensor (TPS). Bentley manual explains clearly how to test TPS.

Good Luck
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#7 (permalink) Old 07-02-2005, 07:47 PM
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Quote:
Originally posted by BMW-ATI@Jul 1 2005, 01:15 PM
I thought the ICV was like bigger
plus that says idle regulating valve LOL!


amnyone is that picture right, cause if so then it should be easy to clean?
[snapback]358887[/snapback]

YES, that is a correct valve. in real life, however it looks a little bigger than that and it is located right under your intake manifold. just take a flashlight, stand directly in front of the engine and try to see it under the manifold. there are few hoses that may block the view so just move them carefully and you will see it. from your side, you will see a connected electric plug in it.. there is a also a rubber wrap around it that holds it in place...

i have similar syptoms to yours and i have cleaned it but it didn't change anything..

now i tend to think that my coil plugs need to be replaced or something like that...

ask me if you need more info on how to remove that valve...
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#8 (permalink) Old 07-03-2005, 01:55 AM
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i was goin 2 clean it on my car, nd i figured it was this!

[attachmentid=22744]

but i never got round to takin the whole manifold off, i will sometime soon though!
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<img src='http://www.geocities.com/thereisnothinglikeabmw/mycar1.jpg' border='0' alt='user posted image' />
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#9 (permalink) Old 07-03-2005, 02:05 AM
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that thing looks like something else... i think it is fuel filter on that pic. basically, it is T shaped, there are two hoses going in it and electric connector. it is smaller than fuel filter.
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#10 (permalink) Old 07-03-2005, 07:02 AM
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do u (or any1) maybe have a pic of it then? i got told tht that was probably it, but yea i dnt really want to take the wrong thing off.

thnx

<img src='http://www.geocities.com/thereisnothinglikeabmw/mycar1.jpg' border='0' alt='user posted image' />
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#11 (permalink) Old 07-03-2005, 01:55 PM
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no, i don't have a picture... but it is directly under the intake manifold.. kind of close to the engine block but not very very close...


just take a flashlight, stand in front of the engine and try to look right under the manifold... and yeah take the airways off such as air mass meter and that another thing that attaches to the throttle... also the airway that goes from radiator to the intake manifold can be removed very easily...

it will still be not easy to reach, disconnect and remove icv but it will help..
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#12 (permalink) Old 07-03-2005, 03:02 PM
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first off that link is only showing maf to intake manifold parts,, second the pic that war put up is of the fuel filter.. secondly if the ICV is that bad it could affect the performance but i really dont think its gonna, it will affect idle though, are you sure its just not you? LOL i mean it can be due to the heat, cars dont perform as good in the heat as they do in cooler temps,

oh btw here is a pic of an ICV http://www.bimmerwerkz.com/forum/index.php...e=post&id=18156

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#13 (permalink) Old 07-03-2005, 03:06 PM
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is it that T shaped thingy?
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#14 (permalink) Old 07-03-2005, 03:07 PM
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yes that was mine when i did my engine swap

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#15 (permalink) Old 07-03-2005, 05:15 PM
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aight ill try it out,
if thats not the case, then i dont know, maybe it is the heat
or maybe my cat converter is clogged
cause it seems my car takes off quite well when it's cooler outside?
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