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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E30 (1982 - 1993)

E30 (1982 - 1993)
God's Chariot. The E30 was produced primarily from 1982 through 1991. The cabriolet was the one exception which was produced through 1993.

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  #1  
Old 12-14-2010, 07:48 AM
chase62002 chase62002 is offline
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Location: wv
 
Join Date: Sep 2009
Posts: 52
Mein Auto: 1985 325e
325e cuts out between 1200 rpm and 3500 rpms above that runs fine.

i have replaced everything on this, wanted a good dependable driver.the problem is if you slowly move the throttle from the idle position the engine cuts out like its not getting enough fuel.it acts this way until it gets to the upper rpms and it's clears up. i can use a jumper on the ecu connector for the tps and force the ecu to think that the wot is made it will rev up fine. like i said i have replaced everything. any help.
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  #2  
Old 12-14-2010, 11:01 AM
Pennyw1se Pennyw1se is offline
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Mein Auto: 1988 325e
Hot and/or cold?
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  #3  
Old 12-14-2010, 12:25 PM
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Krumchev2 Krumchev2 is offline
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Location: Easton, Pa
 
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Mein Auto: 91' 318ic
Sounds like a vacuum leak to me. Does your check engine light come on?
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  #4  
Old 12-14-2010, 01:04 PM
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_Ethrty-Andy_ _Ethrty-Andy_ is offline
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Mein Auto: E34 Touring AC Schnitzer
have you replaced the TPS???
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  #5  
Old 12-14-2010, 03:02 PM
chase62002 chase62002 is offline
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Location: wv
 
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Mein Auto: 1985 325e
hot and cold, not a vac leak have replaced intake gasket, valve cover gasket,bypass tube gasket, the engine holds 19 inches of vac at idle steady.have replaced all rubber hoses,intake bellow, replaced the tps,afm,fpr,speed and reference sensor, fueltank, fuel pump and filter,cap rotor plugs wires, icm, icv, timing belt, water pump,injectors,fuel lines.so like i stated i have replaced everytime.now a bit of history about the car.we i recevied the car motor was locked up and had been sitting for 8 years, someone had taken the afm and icv. the car idle good but when you slowly apply the throttle it cut out misses and only picks up on top end. when i jumper the tps connector to make the ecm think it's at wot it run pretty good. also the engine seem to be running leanby looking at the plugs. this is a good problems that i can't figure out.
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  #6  
Old 12-14-2010, 05:32 PM
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Krumchev2 Krumchev2 is offline
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Location: Easton, Pa
 
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Mein Auto: 91' 318ic
Quote:
Originally Posted by chase62002 View Post
hot and cold, not a vac leak have replaced intake gasket, valve cover gasket,bypass tube gasket, the engine holds 19 inches of vac at idle steady.have replaced all rubber hoses,intake bellow, replaced the tps,afm,fpr,speed and reference sensor, fueltank, fuel pump and filter,cap rotor plugs wires, icm, icv, timing belt, water pump,injectors,fuel lines.so like i stated i have replaced everytime.now a bit of history about the car.we i recevied the car motor was locked up and had been sitting for 8 years, someone had taken the afm and icv. the car idle good but when you slowly apply the throttle it cut out misses and only picks up on top end. when i jumper the tps connector to make the ecm think it's at wot it run pretty good. also the engine seem to be running leanby looking at the plugs. this is a good problems that i can't figure out.
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  #7  
Old 12-15-2010, 09:06 AM
Pennyw1se Pennyw1se is offline
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Mein Auto: 1988 325e
Why don't you take it to a shop that can perform a smoke test to officially rule out a vacuum leak? It honestly sounds like a leak.
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  #8  
Old 12-15-2010, 01:18 PM
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Krumchev2 Krumchev2 is offline
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Location: Easton, Pa
 
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Mein Auto: 91' 318ic
Quote:
Originally Posted by Pennyw1se View Post
Why don't you take it to a shop that can perform a smoke test to officially rule out a vacuum leak? It honestly sounds like a leak.
+1 all the symptoms you're describing point to a vacuum leak somewhere
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  #9  
Old 12-15-2010, 02:09 PM
monkeytaco monkeytaco is offline
e30 swapper
Location: Denver Colorado
 
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Mein Auto: e30-318i
Check your o2 sensor. If your CEL is on, do a stomp test. I do agree that it sounds like a vacuum leak though. Backwards icv? lol
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  #10  
Old 12-15-2010, 02:56 PM
chase62002 chase62002 is offline
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Location: wv
 
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Mein Auto: 1985 325e
if a vac leak why would the engine hold good vac on the gauge.and why would the problem not persist when the tps is jumpered out. i have replaced the 02 sensor. on the 1985 e i dont think you can do the stomp test.thanks again keep the ideals comming. i work at night so my replys will be in the evenings.
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  #11  
Old 12-15-2010, 03:01 PM
monkeytaco monkeytaco is offline
e30 swapper
Location: Denver Colorado
 
Join Date: Apr 2010
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Mein Auto: e30-318i
Check for corrosion on all your engine grounds?
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  #12  
Old 12-15-2010, 04:30 PM
chase62002 chase62002 is offline
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Location: wv
 
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Mein Auto: 1985 325e
The grounds are clean, I've replaced the wiring harness.
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