Loss acceleration

Asked by Nov 08, 2016 at 09:31 PM about the 1992 BMW 3 Series 325i

Question type: Maintenance & Repair

I drive a 1992 BMW. Yes this car is 24 years old,
but it seemed like it had a strong engine and a
good tranny. I have updated all of the regular
maintenance like tires, spark plugs shocks struts
Wheels and fixed issues like power steering. It
seemed to have a gas leak at the very top of the
engine, only leaking when I filled it and topped off
but stopping the leak after about 6 ounces of gas
leak. So this led me to only filling the engine three
quarters to avoid having to repair the leak right
now. I let the gas get down to 30 miles left
according to electronic function on the car. I was
in stop-and-go traffic and then the check engine
light came on. Immediately the car lost
acceleration but started softly bucking forward. I
was flooring it but could not hear or feel any
acceleration, it still would move very slowly, less
than 5 miles per hour, bucking the entire time.
Since this occurrence, i have kept the tank as full
as possible but the same thing has happened
about 3 more times. It is rather unpredictable, and
although i cannot hear or feel any acceleration- it
smells like burning rubber/something when i floor
the pedal. Mechanics have told me that they can
only help me at the moment the problem is
happening and while the check engine light is on,
so I am frustrated and scared to be out on the road
but do not have a means of buying a new car.

Other possible related information:

1: The check engine light and the occurrence is
directly related. The problem only happens the
moment the check engine light comes on and as
soon as the check engine light goes off the
problem stops.

2. The engine sometimes while in park revs up to
1000 rpms. But in a rhythmic bouncing.

3. This problem never occured until that first time i
got too low on gas.

4. If i ever get it going, possibly from a downhill
start, acceleration starts working.

My possible hypotheses (based completely on
google education):

1. Super clogged fuel injectors in this old ass car
2. Fuel pump issues, possible cause of the leak too
3. Tranny problem in 1st?

Please give your opinion on what the problem
would be, and what i can do to patch up the issue
and confidently get to and from work daily.

2 Answers

40,115

Have the engine codes read to know what the problem is.

The problem is transient and whenever i can get to a mechanic, i am told that they can only assess the problem while the light is on. Therefore, my question is: based on the symptoms i describe in the original post, is there and problem that a guru would diagnose my car with.

Your Answer

Add photo

Related Questions

  • Accelerator 2 answers

    Wondered if anyone's had this exp. with their car. When I accelerate quickly, it feels as if though something is rolling back. I took it to a non-BMW shop and he wanted to charge me $90 just to look...

    1996 BMW 3 Series 328i Convertble

    -

    Maintenance & Repair

  • engine misses during acceleration 2 answers

    The engine starts well and runs smoothly for a while then starts missing. If I turn the engine off and restart it may or may not miss. I replaced the plugs. Not them.

    1987 BMW 3 Series 325i Convertible

    -

    Maintenance & Repair

  • lag in acceleration 3 answers

    2007 BMW 3 Series 335i

    -

    Maintenance & Repair

  • Sluggish acceleration 1992 BMW 325IS 4 answers

    When I accelerate fast but not flooring it, It picks up speed in incurments. What could this be? I'm thinking it's a clogged Cat but not sure. Can anyone help me & tell me what this could be?

    1992 BMW 3 Series 325i

    -

    Maintenance & Repair

  • Bmw 3 series 55 plate loss of power 4 answers

    I was driving on the motorway before and my car started to lose power as i put my foot down and the light with a circle and a triangle with an explanation mark in the middle of it started flashing...

    2005 BMW 3 Series 320i

    -

    General

Search BMW 3 Series Questions

UK Questions

Are you a UK consumer? CarGurus now has a discussion forum in the UK.

BMW 3 Series Experts

#1 Tom Demyan
Tom Demyan
Reputation 4,140
#2 Robert Charlson
Robert Charlson
Reputation 1,410
#3 Matt Mankinen
Matt Mankinen
Reputation 1,130
View All

Related Models For Sale

Used BMW 5 Series
664 Great Deals out of 15,900 listings starting at $1,999
Used BMW M3
77 Great Deals out of 2,091 listings starting at $4,795
Used Mercedes-Benz C-Class
829 Great Deals out of 31,300 listings starting at $2,200
Used Ford Mustang
583 Great Deals out of 41,215 listings starting at $1,699
Used BMW 7 Series
152 Great Deals out of 5,596 listings starting at $1,600
Used Honda Accord
1,084 Great Deals out of 76,808 listings starting at $1,395
Used Chevrolet Camaro
475 Great Deals out of 39,921 listings starting at $3,499

Used Cars For Sale

2017 BMW 3 Series For Sale
8,500 listings starting at $31,096
2016 BMW 3 Series For Sale
153 Great Deals out of 5,790 listings starting at $21,902
2015 BMW 3 Series For Sale
32 Great Deals out of 923 listings starting at $13,999
2014 BMW 3 Series For Sale
188 Great Deals out of 3,093 listings starting at $13,799
2013 BMW 3 Series For Sale
366 Great Deals out of 5,514 listings starting at $11,950