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3-Series (E21, E30) Chat relating to the BMW 3-Series from 1975-1983 and 1984-1991 line. Specific models: BMW 315, BMW 316, BMW 318, BMW 318i, BMW 320/4, BMW 320i, BMW 320/6, BMW 323i, BMW 320i. E30 Family models include: BMW 325e, BMW 325i, BMW 325is, BMW 325ix.

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Old 02-05-2004, 07:43 PM   #1 (permalink)
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I have an 1988 325is. Lately I've been getting a service engine light coming on for a few seconds (20) or so. The car doesnt seem to have as much power as it used to it seems like its hessitating while I accelerate. The idle is steady must of the time and the car wont stall. Any ideas of where should I start looking at?
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Old 02-06-2004, 09:15 PM   #2 (permalink)
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check for cracks in the intake boot, these have been known to cause problems. make sure the oil dipstick is pushed all the way in.
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Old 02-07-2004, 09:58 AM   #3 (permalink)
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I just got my 87 325i and it had similar problems. turned out it was a cracked intake manifold gasket and there was a vacuum leak into the engine. Not sure if this is your problem but if so, then when you open the hood and turn the car on, you will hear the high-pitched sound of air rushing in, and you will also hear the exhaust system pulsating in rhythm with the air leak.
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Old 02-08-2004, 11:57 AM   #4 (permalink)
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Originally posted by PushinTheEnvelope@Feb 7 2004, 12:38 PM
I just got my 87 325i and it had similar problems. turned out it was a cracked intake manifold gasket and there was a vacuum leak into the engine. Not sure if this is your problem but if so, then when you open the hood and turn the car on, you will hear the high-pitched sound of air rushing in, and you will also hear the exhaust system pulsating in rhythm with the air leak.
If this is your case, Bim325is, it should be a fairly easy DIY.
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Old 02-09-2004, 07:24 PM   #5 (permalink)
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I thank you for your help. I'll check those as soon as I get the car to start again. I suspect a fuel delivery problem, perhaps a relay or worst the pump. The relay is my first choice since I cant hear the pump when the ignition switch is in the on position. Before this all happened the pump was making a high pitch noise. thanks
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Old 02-09-2004, 07:25 PM   #6 (permalink)
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By the way...does any one know how to check a relay other than using a jumper wire?
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Old 02-09-2004, 07:41 PM   #7 (permalink)
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