3k+ Rev problem on E36, M44 Engine
Hi to all.
Firstly I've run a couple of searches on here and not found anything that I feel can help me.
I bought my first BMW, an E36 Compact 1.8ti, (M44 Engine) a few weeks ago and all went well for the first week.
The problem I have is that the car suffers from a lack of power when you apply the throttle more than 3/4 and won't rev past 3000rpm. It doesn't matter what gear your in and is still a problem in Neutral.
It's not consistantly 3000 rpm. When colder the car will go to around 4k, but after 5-10mins it won't go past 3k. Holding the throttle open at 3k actually causes the car to drop revs down to around 2500. It feels like the car is being limited, it wants to rev higher but just seems to bounce back. If your gentle (1/2 throttle or less) you can coax it up to about 3500 rpm.
I have changed the Mass Air Flow Meter and this morning changed the fuel filter. The car is currently running on the driveway at 2k rpm with some Redex Petrol cleaner in the tank, i'm hoping this will help.
My question is, what should I do next?
Things that may be useful:
BMW 318ti, Compact, M44 Engine.
88,000 miles on the clock.
The car has a full BMW service history. Nothing major has been replaced. Serviced every 10k miles or so.
Everything on the car is standard.
There is a knocking coming from the Exhaust. It sounds like it's coming from the box in the middle. Is this the Cat? It does it under idle when cold, but only above 2000rpm when warm.
I have a feeling the car may have been sat for around 6months prior to purchase. The previous owner signed the logbook to the dealer in april and I bought the car at the start of this month.
The car ran fine for about 150miles before any problems. Admitedly I drove it like a pansy as I didn't feel comfortable in it at first. I did bounce it off the redline pulling onto the motorway after about 10mins of driving though.
Before the problem I did a couple of 30 mile or so trips, nothing Intensive and nothing that pushed the car hard.
The problem has gradually gotten worse. I managed an 80mile trip last week by keeping the car below 3000rpm and keeping off hard throttle. It is now next to undriveable though.
Yesterday it stalled just doing a short loop around the block and the Idle became erratic upon restart.
The idle has now settled at around 750rpm though and doesn't really fluctuate much.
I think thats everything.
So, what do I change next? Or is it off to the BMW Garage? The problem with taking it to a garage is that I don't trust driving it more than a couple of miles.
I don't know much about BMW's, or cars in general but i'm happy having a crack at anything. I used to Service my old Vauxhall without any problems and the BMW doesn't seem much more complex.
Thanks in advance guys and girls.
Last edited by StumpsterDHR; 10-15-2008 at 12:52 PM.