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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E36 (1991 - 1999)

E36 (1991 - 1999)
The E36 chassis 3-Series BMW was a huge hit among driving enthusiasts from the first moment the car hit the pavement. The E36 won numerous awards over the years it was produced and is still a favorite of many BMW enthusiasts to this day! -- View the E36 Wiki

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  #1  
Old 12-09-2012, 10:25 AM
chase62002 chase62002 is offline
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Angry E36 very slow acceleration need help

E36 sometimes the acceleration Is very slow almost not moving slow. But after about 3500 rpm the car takes off. And ideals on what to check first. Car idles fine. Starts right up. Thanks.
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  #2  
Old 12-09-2012, 01:16 PM
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Mein Auto: '96 328is Cosmos
Fuel?
Plugs?
Fuel filter?
Air filter?
missing?
codes?
engine?
transmission?
year?



Your post seems a little light on details.
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  #3  
Old 12-09-2012, 02:06 PM
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Is it a 318... Because that's just how it is.
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98 328i hellrot (sold)
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  #4  
Old 12-09-2012, 02:55 PM
chase62002 chase62002 is offline
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Mein Auto: 1985 325e
1997 328i 2.8 new fuel filter auto transmission with new fluid and filter, sometimes the car runs ok but not very often.
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  #5  
Old 12-09-2012, 02:57 PM
chase62002 chase62002 is offline
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Mein Auto: 1985 325e
1997 328 I new fuel filter new trans filter with fluid. Auto trans no codes. Car idles good. Just slo slow take off.
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  #6  
Old 12-09-2012, 03:09 PM
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TheFinanceGuy TheFinanceGuy is offline
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Auto? Yikes ....

Start by replacing the plugs, and inspecting the coil boots. Replace air filter if you haven't.

This could be a VANOs issue, are hearing any rattling in the engine bay?
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  #7  
Old 12-09-2012, 03:12 PM
chase62002 chase62002 is offline
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No noise from the vanos. The engine does not miss at all when I disconnect the maf the engine revs up great.
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  #8  
Old 12-09-2012, 03:52 PM
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TheFinanceGuy TheFinanceGuy is offline
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Have you tried cleaning the MAF?

If that makes a difference when unplugged.
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  #9  
Old 12-09-2012, 03:54 PM
chase62002 chase62002 is offline
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Yes I cleaned the maf did not make a difference. Bought a new one off eBay but when I plugged it up the transmission warning light can on and the car shifts hard when driving.
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  #10  
Old 12-10-2012, 09:19 PM
bmw-mania bmw-mania is offline
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Run Diagnostics for codes


search for TCM
Transmission Control Module

EDIT:
Stomp Test does indeed apply ONLY to obd1
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Last edited by bmw-mania; 12-10-2012 at 10:00 PM.
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  #11  
Old 12-10-2012, 09:36 PM
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Originally Posted by bmw-mania View Post
Stomp test

search for TCM
Transmission Control Module
What good will the stomp test do the OP with a '97 328? I was of the understanding that was only for OBD I cars Yes I know perfectly well, just not trying to start a fight.
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  #12  
Old 12-10-2012, 09:57 PM
bmw-mania bmw-mania is offline
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multitasking.. dammit
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  #13  
Old 12-11-2012, 05:46 AM
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he bought a maf from ebay. didnt someone from here do the same thing and their car ran like poo?

(unless he happened to get an oem one )
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  #14  
Old 12-11-2012, 06:54 AM
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Quote:
Originally Posted by chase62002 View Post
No noise from the vanos. The engine does not miss at all when I disconnect the maf the engine revs up great.
Here's a pretty significant clue. Yes you say you cleaned it. try cleaning it again. Th
ere's something wrong with it.

Quote:
Originally Posted by Dino1394 View Post
he bought a maf from ebay. didnt someone from here do the same thing and their car ran like poo?

(unless he happened to get an oem one )
Is the one you bought OEM? Was it new? Used?

Do you know anyone else with an E36 that you can swap MAF's with to test?
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  #15  
Old 12-11-2012, 02:01 PM
chase62002 chase62002 is offline
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Ten four could it be the vanos unit. Does it advance the timing at a set rpm?
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  #16  
Old 12-11-2012, 02:25 PM
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wait how many issues are you experiencing?


yes at around 3/3.5k rpms youll feel a sudden burst of power = vanos seals

but then you mention the car doesnt misfire when you unplug the maf
but before that you said it idles fine?

im a little confused now
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  #17  
Old 12-11-2012, 03:28 PM
bmw-mania bmw-mania is offline
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...


If it were the vanos.. it would be making a significant amount of noise..

Clean, Clean, Clean the MAF.. remove screens on MAF, use spray FIRST, (and LIGHTLY with q-tip if necessary) clean the element.
Clean Throttle body
Clean Throttle position sensor
Check for vacuum leaks
Check the hoses that are plumbed into the boot on intake

Disconnect, clean, lube, and reconnect all associated electrical connections.
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Originally Posted by cj.surr View Post
I don't have to read the username on these posts to know who wrote it.

Bmw-Mania, Ladies and Gentlemen.

Last edited by bmw-mania; 12-11-2012 at 03:30 PM.
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  #18  
Old 12-11-2012, 05:51 PM
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Quote:
Originally Posted by bmw-mania View Post
...
Clean, Clean, Clean the MAF.. remove screens on MAF, use spray FIRST, (and LIGHTLY with q-tip if necessary) clean the element.
Clean Throttle body
Clean Throttle position sensor
Check for vacuum leaks
Check the hoses that are plumbed into the boot on intake

Disconnect, clean, lube, and reconnect all associated electrical connections.

Why don't you put that in your sig? Then you could just put "Read below".
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  #19  
Old 12-11-2012, 05:56 PM
granlund granlund is online now
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Quote:
Originally Posted by Dino1394 View Post
wait how many issues are you experiencing?


yes at around 3/3.5k rpms youll feel a sudden burst of power = vanos seals

...
+1 on this and it will not set a CEL.

Unplug the VANOS solenoid and drive the car. If there is no difference, you need to replace the VANOS seals.
http://www.beisansystems.com/procedu..._procedure.htm
or
http://www.drvanos.com/index.php?opt...&id=1&Itemid=2
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  #20  
Old 12-11-2012, 06:38 PM
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Quote:
Originally Posted by granlund View Post
+1 on this and it will not set a CEL.

Unplug the VANOS solenoid and drive the car. If there is no difference, you need to replace the VANOS seals.
http://www.beisansystems.com/procedu..._procedure.htm
or
http://www.drvanos.com/index.php?opt...&id=1&Itemid=2
is that safe? i wanna try it just for the heck of to see what my car will do lol
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  #21  
Old 12-11-2012, 06:44 PM
bmw-mania bmw-mania is offline
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Quote:
Originally Posted by hornhospital View Post
Why don't you put that in your sig? Then you could just put "Read below".


You made me laugh.
+1 and 3 gold stars for you. :thumbs

Quote:
Originally Posted by granlund View Post
+1 on this and it will not set a CEL.

Unplug the VANOS solenoid and drive the car. If there is no difference, you need to replace the VANOS seals.
http://www.beisansystems.com/procedu..._procedure.htm
or
http://www.drvanos.com/index.php?opt...&id=1&Itemid=2


Interesting..
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I don't have to read the username on these posts to know who wrote it.

Bmw-Mania, Ladies and Gentlemen.
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  #22  
Old 12-11-2012, 07:09 PM
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do you have a dvom?? if so, check the voltage @ the maf @ idle. iirc it should be at about 0.8v @ idle.



df
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  #23  
Old 12-11-2012, 11:22 PM
granlund granlund is online now
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Quote:
Originally Posted by Dino1394 View Post
is that safe? i wanna try it just for the heck of to see what my car will do lol
Yes, I recently diagnosed a friend's car that way.

The electrical wire goes from the solenoid on the front edge of the motor (near the oil filter housing) to a connector underneath the intake manifold. It might be a little bit difficult to reach the connector, but you should see it.

If there is no electrical signal to the solenoid, it will not apply oil pressure to the VANOS piston to advance the cam. However, if the VANOS piston seals are bad (which is very common on older cars), the oil pressure will also not advance the cam and you will experience poor performance.

This is an easy way of diagnosing the VANOS with no cost in parts, nor any measurements.
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  #24  
Old 12-12-2012, 03:16 AM
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Quote:
Originally Posted by granlund View Post
Yes, I recently diagnosed a friend's car that way.

The electrical wire goes from the solenoid on the front edge of the motor (near the oil filter housing) to a connector underneath the intake manifold. It might be a little bit difficult to reach the connector, but you should see it.

If there is no electrical signal to the solenoid, it will not apply oil pressure to the VANOS piston to advance the cam. However, if the VANOS piston seals are bad (which is very common on older cars), the oil pressure will also not advance the cam and you will experience poor performance.

This is an easy way of diagnosing the VANOS with no cost in parts, nor any measurements.
Just tried it. Good easy to test the vanos.

Now i know why my moms car stalls during cold weather warm ups

Sent from my SPH-D710 using Bimmer App
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