Randomly running rough....

[oomz1975]

Driving around tonight & all of a sudden I could feel the car was't running right.

I would have the throttle pedal right to the floor & it would start bunny hopping or do nothing at all.
There is no problem with the idle, but it almost feels like its misfiring.
Pulled over & held the throttle open until it seemed to fully rev properly again.
Drove it home, but it still felt like it was missing & it wouldn't rev as it should.
This has happened a couple of times over the last few months.
Gonna check the cap & rotor tomorrow during the day with more light.
Plugs & leads are all good.

Anything else I should chack that may be causing this issue???

1990 325i manual

[oomz1975]

Could this be caused by a dodgy afm, if so, any way of checking?

[Grrrmachine]

Mine drove like that with the AFM disconnected so it could be that, but you may also have popped off or cracked one of the intake/vacuum hoses which would probably give the same effect.

[oomz1975]

Mine drove like that with the AFM disconnected so it could be that, but you may also have popped off or cracked one of the intake/vacuum hoses which would probably give the same effect.

I'll check these out & replace where necessary, cheers.

[oomz1975]

Just had a good poke around the engine bay & noticed the rubber boot connecting the afm to the throttle body wasn't fitted correctly, removed it, checked for cracks, splits etc.
Whilst it was off, I cleaned the inside of the throttle body, then attached the rubber boot correctly.

Took the touring for a spin & noticed the throttle response was so much better straight away.
So far so good, will go for another run shortly to check if it's all good.

[GDBN]

Hi,
This C191 plug ....
Would my 86 325i Cab have this (or the same type thing) located near the bulkhead, by the fuse box ?

G

[Brianmoooore]

Hi,
This C191 plug ....
Would my 86 325i Cab have this (or the same type thing) located near the bulkhead, by the fuse box ?

G

Not present at all on pre facelift looms.