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5-Series (E12,E28, E34, E39, E60) Chat relating to the BMW 5-Series of all generations. Specific models include: BMW 518, BMW 520, BMW 520i, BMW 530i, BMW 528i, BMW 530i, BMW 518i, BMW 524d, BMW 525i, BMW 525e, BMW 528e, BMW 540i, BMW 535i, BMW 520d, BMW 525td, BMW 525d, BMW 530d, BMW 525i/xi, BMW 530i/xi. (BMW 5-Series Forum)

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Old 07-14-2009, 02:02 PM   #1 (permalink)
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Check Engine!?!?!?!?!?!?!?!

ok so i have a 1993 525i auto with 184,xxx miles and the check engine light comes off and on!


the only thing that i noticed on the car is that when the light is on and i turn the car on it jumps to 1,000 rpm and wen it starts to idle it idles in the 400-500 rpm range. it does that for a while till i put it in drive. also when its idling like that, it sounds like the car is going to just turn off...

wen the light is off the car turns on and runs perfect. idk whats wrong with the car!! i changed the oil evry 3500miles so i know its not anything bout the oil

maybe a messed up sensor or what?
if n e one has an idea on what might be causing this problem HELP!!!

Thanx!
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Old 07-14-2009, 02:34 PM   #2 (permalink)
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Could be a problem with your ICV (idle control valve). Sometimes they get dirty and the car idles oddly. What you're talking about also sounds like a possible vacuum leak.
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Old 07-14-2009, 02:37 PM   #3 (permalink)
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I would check the ICV first, that seems to be a common problem with e34s, I had a simular problem with my 91 525i, I never got it fixed though because it didn't bother me too much, it was kinda like a light massage at red lights haha.
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Old 07-15-2009, 11:15 PM   #4 (permalink)
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Could be a problem with your ICV (idle control valve). Sometimes they get dirty and the car idles oddly. What you're talking about also sounds like a possible vacuum leak.
and where is the ICV?

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Old 07-15-2009, 11:16 PM   #5 (permalink)
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I would check the ICV first, that seems to be a common problem with e34s, I had a simular problem with my 91 525i, I never got it fixed though because it didn't bother me too much, it was kinda like a light massage at red lights haha.


where is the ICV at?
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Old 07-15-2009, 11:28 PM   #6 (permalink)
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Have you looked at realoem.com ? The location of ICV varies from one car to another; some don't even have one.
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Old 07-15-2009, 11:40 PM   #7 (permalink)
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Have you looked at realoem.com ? The location of ICV varies from one car to another; some don't even have one.
i have now but i cannot find n e thing bout the ICV ?
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Old 07-16-2009, 12:19 AM   #8 (permalink)
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Have you looked for an idle (throttle body) by pass?
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Old 07-16-2009, 02:19 AM   #9 (permalink)
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Have you looked for an idle (throttle body) by pass?
nothing.. well to what i saw.. i clicked on evry single option they have there and i didnt see any thing of what u said

wat category u think its in?
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Old 07-17-2009, 07:54 AM   #10 (permalink)
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The ICV in your car is almost hidden under the intake manifold and is not an easy job to pull it out. I have never tried it but whenever I read people stories they mention scrapes, loss of skin, etc. Some even take the intake manifold off to do it.
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Old 07-17-2009, 05:31 PM   #11 (permalink)
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The ICV in your car is almost hidden under the intake manifold and is not an easy job to pull it out. I have never tried it but whenever I read people stories they mention scrapes, loss of skin, etc. Some even take the intake manifold off to do it.


dam....


this will b a challenge...
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