acceleration problem, new to forum - 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.

Reply
 
LinkBack Thread Tools Display Modes
#1 (permalink) Old 05-16-2008, 01:45 PM
n00b
 
Join Date: May 2008
Location: Salt Lake City, UT
Posts: 12
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
95bmw325i is on a distinguished road
(Thread Starter)
Unhappy acceleration problem, new to forum

I'm relief to have found you all, I've been doing lots of tread reading here and found some one with very much the same problem am having, but no post of solution

here is the scoop ( be ready will be long, sorry): my '95 325i hesitates underload or full throttle (when gas pedal is depress smooth it doesn't hesitates) all of this happens in 1st and 2nd gear mostly but will be safe to say it happens under 2500 rpms at full throttle only, after 2500 it runs great, idles very smooth although idles at 600 rpms! (or at least it seems to me). Parts replaced/changed: fuel filter, air filter, air intake thermostat, plugs
bosh +4 , MAF (but went back to old one because after replacing w/ new MAF, problem was NOT solve). After trying all of these, gave in and took car to stealership!!! BIG HUGE MISTAKE!!!! they took my $$$ and diagnose nothing, here is what they said: " car has severed hesitation under low RPM, check plugs and all 6 were loose ( I doubt it, plugs were changed 1 week prior to this fraud, and I've done all work mentioned above by me), read fault codes and had MAF fault code, adviced to replace MAF, owner declined. Conclusion problem could be clogged exhaust or poor fuel deliver" it is a bunch of crap to get this from the supposed trained tech> I know there are many things that can cause this problem, I've guessing them myself. Anyways, if there are any out there that has has the same problem an found a solution please shade some light to my nightmare. Thanks all .
95bmw325i is offline  
Sponsored Links
Advertisement
 
#2 (permalink) Old 05-16-2008, 02:18 PM
OMFG another one!?
 
witeshark's Avatar
 
Join Date: Aug 2004
Location: Miami FL
Posts: 14,700
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
witeshark is just really nice witeshark is just really nice witeshark is just really nice witeshark is just really nice witeshark is just really nice
How many miles? One thing you might have a look at is the exhaust oxygen sensor.

BMW

Sig by zeaq
witeshark is offline  
#3 (permalink) Old 05-16-2008, 02:47 PM
Im Bluffin With My Muffin
 
AlpineSixAndSeven's Avatar
 
Join Date: Nov 2006
Location: Palo Alto, CA
Posts: 5,992
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold
Send a message via AIM to AlpineSixAndSeven
you said bosh +4's? i had an issue with those in my 86 325es... swapped them for normal plat.s and it ran alot better.... just a thought...

1991 Ford Taurs SHO 5 Speed White on Tan
1996 Chevy Lumina LTZ Rep 3.4L
1992 318i Coupe parts car
1992 325i Ls1 swap with a T56 6 speed 12.2 quarter mile
1976 Mercedes Benz 300D with a Ford 5.0L Fuel Injected soon to be Modded
I am Captain Obvious
AlpineSixAndSeven is offline  
#4 (permalink) Old 05-16-2008, 03:56 PM
n00b
 
Join Date: May 2008
Location: Salt Lake City, UT
Posts: 12
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
95bmw325i is on a distinguished road
(Thread Starter)
thanks guys, It has 142,000 miles, and I did replaced the O2 sensor one week ago I replaced all parts mentioned. I read some more and for some it was a combination of plugs coils/boot... am just confused. I'll go back to OEM plugs but I have always use bosh plat +2 or +4 and didn't have this problem. The car has been w/ me since 2001. I forgot to mention I have a Dinan cold air intake, Dinan throttle body and Dinan Comp. Chip. Can the MAF connector be replace? should I replace first the throttle body position sensor? what would you replace 1st? thanks
95bmw325i is offline  
#5 (permalink) Old 05-16-2008, 04:34 PM
my car is red
 
94BMW325i's Avatar
 
Join Date: Dec 2004
Location: Newark, Delaware
Posts: 5,747
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
94BMW325i has much to be proud of 94BMW325i has much to be proud of 94BMW325i has much to be proud of 94BMW325i has much to be proud of 94BMW325i has much to be proud of 94BMW325i has much to be proud of 94BMW325i has much to be proud of 94BMW325i has much to be proud of 94BMW325i has much to be proud of 94BMW325i has much to be proud of
Send a message via AIM to 94BMW325i Send a message via Yahoo to 94BMW325i
Try the maf, and also check for any vacuum leaks.



member and partial creator of pimpin the auto club
94BMW325i is offline  
#6 (permalink) Old 05-16-2008, 04:35 PM
Im Bluffin With My Muffin
 
AlpineSixAndSeven's Avatar
 
Join Date: Nov 2006
Location: Palo Alto, CA
Posts: 5,992
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold
Send a message via AIM to AlpineSixAndSeven
why would you wanna replace the MAF connector?

1991 Ford Taurs SHO 5 Speed White on Tan
1996 Chevy Lumina LTZ Rep 3.4L
1992 318i Coupe parts car
1992 325i Ls1 swap with a T56 6 speed 12.2 quarter mile
1976 Mercedes Benz 300D with a Ford 5.0L Fuel Injected soon to be Modded
I am Captain Obvious
AlpineSixAndSeven is offline  
#7 (permalink) Old 05-16-2008, 10:31 PM
n00b
 
Join Date: May 2008
Location: Salt Lake City, UT
Posts: 12
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
95bmw325i is on a distinguished road
(Thread Starter)
I have replaced the MAF with a NEW one, (though I've returned the thing 'cause it kept doing it) I think I'm going to go back to regular plugs, clean the coil/boot put it together and test drive. Any ideas guys? thanks for your help.
95bmw325i is offline  
#8 (permalink) Old 05-20-2008, 11:39 AM
n00b
 
Join Date: May 2008
Location: Salt Lake City, UT
Posts: 12
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
95bmw325i is on a distinguished road
(Thread Starter)
update on this issue... the haunted car is not doing it so much anymore.... last weekend replaced headlights with angel eyes, so i disconnected the battery (once again for the 30th time), changed gear & trans fluid, put everything back together and for a couple of days behave the same... and then.... the hesitation can be felt just in the mornings when car is cold, after warm up is not doing it anymore, but I feel the car a bit sluggish, could it be new 75w90 gear oil? oh I almost forgot to mention that I sprayed like crzy inside the throttle body with cleaner, it was really, really dirty....ANY OPINIONS.

Different Issue, my RPMs are on the 600s & I think should be in the 750s, right? do you think ICV needs cleaning?????? please comment, I DO appreciate your experiences. Thanks.
95bmw325i is offline  
#9 (permalink) Old 05-21-2008, 09:13 AM
n00b
 
Join Date: May 2008
Posts: 4
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
bimmwak is on a distinguished road
I just fixed this same problem in my car. It turned out to be the coils being bad. Took out the coils, which appeared not to have been changed in the 150,000 miles, and put in a set of Bavarian auto coils. Started up right away, idled perfect, and pulled strong to redline without the slightest hiccup. It may be worth looking in to. Coils ran about $300 plus shipping if memory serves me correct, but it comes with 6 coils and along with better quality boots . Good luck!
bimmwak is offline  
#10 (permalink) Old 05-21-2008, 11:34 AM
n00b
 
Join Date: May 2008
Location: Salt Lake City, UT
Posts: 12
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
95bmw325i is on a distinguished road
(Thread Starter)
Thanks Bimmwak, I'll try that. The saga continues.....
95bmw325i is offline  
#11 (permalink) Old 05-21-2008, 03:30 PM
Im Bluffin With My Muffin
 
AlpineSixAndSeven's Avatar
 
Join Date: Nov 2006
Location: Palo Alto, CA
Posts: 5,992
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold
Send a message via AIM to AlpineSixAndSeven
.... soak the ICV in carb/brake parts(stronger) cleaner and make sure is in clean in and out then do the coils.... alot less $$$

1991 Ford Taurs SHO 5 Speed White on Tan
1996 Chevy Lumina LTZ Rep 3.4L
1992 318i Coupe parts car
1992 325i Ls1 swap with a T56 6 speed 12.2 quarter mile
1976 Mercedes Benz 300D with a Ford 5.0L Fuel Injected soon to be Modded
I am Captain Obvious
AlpineSixAndSeven is offline  
#12 (permalink) Old 05-22-2008, 02:21 PM
n00b
 
Join Date: May 2008
Location: Salt Lake City, UT
Posts: 12
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
95bmw325i is on a distinguished road
(Thread Starter)
Thanks Alpine, I super cleaned the ICV last night, (thanks to you guys and the info provided it wasn't painful at all) but still the hesitation occurs and its getting worse :-(
I bought a multimeter and I'll be getting today the bentley manual to start testing all of those sensors... when removed the throttle body I found some oil in the intake, is it normal??!!!!! rpm improved just a bit, but still less than 750's. thanks guys.
95bmw325i is offline  
#13 (permalink) Old 05-27-2008, 03:13 AM
5th Gear Member
 
darkhorse737's Avatar
 
Join Date: May 2008
Location: San Francisco, CA
Posts: 1,494
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
darkhorse737 is on a distinguished road
u use a DINAN chip... you sure you gas is of the correct octane rating? cars with those chips do not run correctly unless u use 92 octane or better.

first sensor/switch i would check is the Throttle switch. and then the fuel pressure. In fact, go for a diagnostic scan... it will save u lotsa troubles figuring where to start from
darkhorse737 is offline  
#14 (permalink) Old 05-29-2008, 02:51 PM
n00b
 
Join Date: May 2008
Location: Salt Lake City, UT
Posts: 12
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
95bmw325i is on a distinguished road
(Thread Starter)
thanks guys....well I replaced the ICV (problem still around) I've tested the Throttle pos. sensor it cleared, the MAF connector cleared test as well, am going crazy testing.....any ideas for low idle rpm's????
95bmw325i is offline  
#15 (permalink) Old 05-30-2008, 01:10 AM
5th Gear Member
 
darkhorse737's Avatar
 
Join Date: May 2008
Location: San Francisco, CA
Posts: 1,494
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
darkhorse737 is on a distinguished road
IDLE SPEED is electronically controlled by your DME. there are no provisions for adjustment...

the 750rpm you are shooting for doesnt have to be 750 on the dot. manufacturer specs say +/- 50 rpm. If ur location is at sea level, then 750 is the nominal value.... SLC is a higher altitude, expect lower idle RPM.

then, u also need to be aware that the the injection brain takes into consideration density of air(via AFM), altitude(via altitude compensator),and corellates that to the readings it gets from ur 02 sensor... and then moves ur rpm up or down accordingly.

There is a procedure to set rpm and u can find that in the Pelican tech pages... but HEY!... if it ain't broke, don't fix it ;-)

Last edited by darkhorse737; 05-30-2008 at 01:24 AM. Reason: addendum
darkhorse737 is offline  
Sponsored Links
Advertisement
 
Reply

  BMW Forum - BimmerWerkz.com > BMW Model Specific Forums > 3-Series (E36)


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
User Tag List

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
Heya, anyone else with this forum problem? 4evrwyntr Bimmerwerkz.com Site Help 6 09-15-2005 10:40 PM
New On The Forum, With A Gearbox Problem Arjan e28 535i 3-Series (E36) 4 02-13-2005 04:25 AM
solved the acceleration problem jaykool169 3-Series (E21, E30) 0 06-12-2004 10:15 PM
Acceleration problem for 328i ??? mstar 3-Series (E36) 10 05-19-2004 11:27 PM
we need a alchoholics forum,all around party forum bimmerfan620 Bimmerwerkz.com Site Help 2 01-25-2004 09:09 PM

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome