chokes only after 80mph - United Bimmer Community

**zvigenizvigeni** · 01-25-2012, 02:12 AM

hello guys im having a problem on my bmw e36 325is 94(automatic).i bought this car about 2 months ago and i just noticed a problem that when i drive on high way car chokes .after 80mph when i push the gas car chokes and accelerates very slow (in 5th gear).if its an uphill the problem is getting even worse .also techomiter is kinda going back and forth for a little bit.the problem occurs only after 80 mph ,it feels like im running out of gas or something like that .also i feel like car wants to go but something forces it to not to.i took it to a body shop had it checked by obd1 and they replaced 2 ignition coils and all 6 spark plugs .i putted a new air filter on it but car is having a same problem again .can anyone please help me what to do pls.i think its a fuel filter or the pump .help plsssssssssssss

DEATH2000 · 01-25-2012, 01:13 PM

Welcome to United Bimmer.

Let's start with the front. How is the air filter? Is the MAF sensor dirty/clogged? How is te throttle body? Is it dirty? Does it open and close easily?

**zvigenizvigeni** · 01-25-2012, 02:39 PM

air filter is a brand new.i have never checked maf sensors.throtile body is good.it openes and closes with no problem .the problem happens only after 80mph .it wont go any faster if i wont floor the gas pedal(that way it downshifts gains some speed and then goes fine).Also no check engine light is on. No codes. My mechanic checked it with the computer and sad that car has no problems but that is not true. After 80 car would start acting wierd like running out of gas and if i press gas pedal more the problem is getting even worse and if i floor it the no problem it starts to downshift and gains up to 90 mph with np.

Big Evil · 01-26-2012, 10:23 AM

Replace the fuel filter (its easy and cheap enough). If that doesn't do it, get the fuel pressure AND volume checked.

**zvigenizvigeni** · 01-31-2012, 01:27 AM

Quote:

Originally Posted by Big Evil

Replace the fuel filter (its easy and cheap enough). If that doesn't do it, get the fuel pressure AND volume checked.

i replaced the fuel filter and i saw little improvement. today also i tried to accelerate fast and car started choking (same thing what it used to do above 80mph).and it would not go more faster.then i relised the gas pedal about 80% and it started gaining speed.mileage is about 160000.my mechanic can not find the problem .can anyone halp me plz.

DEATH2000 · 01-31-2012, 04:44 AM

Fuel pump okay? What about injectors? Does it only do it at WOT?

Big Evil · 02-01-2012, 10:18 AM

So did you get the fuel pressure AND volume tested?

**zvigenizvigeni** · 02-08-2012, 11:14 PM

Quote:

Originally Posted by DEATH2000

Fuel pump okay? What about injectors? Does it only do it at WOT?

hi,i pologize for not responding for so long.still got the same problem beside a very high consumption of fuel.ussually car chekes from 3 to 3.5/4 rpm and wont gain the speed no matter how hard i push the gas .we checked the fuel pressure and it was good.idk what to do.i took a look on injectors but not a problem .

**zvigenizvigeni** · 02-08-2012, 11:15 PM

idk about the pump

can it also be a problem ?why did the consumption increased?

11mpg

DEATH2000 · 02-09-2012, 02:31 AM

Have you tried the Throttle Position Sensor (TPS) or Crankshaft Position Sensor (CPS)? A bad sensor could be causing the issue.

**zvigenizvigeni** · 02-09-2012, 10:28 PM

Idk that much about the cars man. Im thinking to take it to another mechnlc but i dont wanna do it because they lie a lot and steal your money. I have not see any honest mechanics in la. Any advices pla

DEATH2000 · 02-10-2012, 12:36 AM

In my signature is the link to the Bentley Service Manual. It is I e of the most comprehensive guides for the E36 available. Take a read through it and it will help explain more about the TPS,CPS and other mechanical areas. This way you will learn a fair bit about your vehicle and if you need to take it to a mechanic then you will be more informed and less likely to get fleeced.

**zvigenizvigeni** · 02-13-2012, 09:52 PM

hey guys .finally got my car fixed .problem came up to be a cranckshaft position sensor .i found a good mechanic in hollywood(which is very hard) and he fixed my car in like 1 hr . thank you everyone for your help.hope this post will help others

**zvigenizvigeni** · 02-13-2012, 09:53 PM

Quote:

Originally Posted by DEATH2000

Have you tried the Throttle Position Sensor (TPS) or Crankshaft Position Sensor (CPS)? A bad sensor could be causing the issue.

you were right

cranckshaft position sensor

DEATH2000 · 02-14-2012, 02:00 AM

Quote:

Originally Posted by zvigenizvigeni

hey guys .finally got my car fixed .problem came up to be a cranckshaft position sensor .i found a good mechanic in hollywood(which is very hard) and he fixed my car in like 1 hr . thank you everyone for your help.hope this post will help others

Excellent. Glad to hear it worked out okay for you!