Messages

1

Engine + Driveline / Engine Coughs sputters, jerks, hiccups.. whatever you want to call it

« on: January 19, 2013, 09:58:25 PM »

Thanks so much for the reply, as far as the speed sensor goes, i re-soldered my whole dashboard cluster and it fixed my fidgety speedo and I thought that i fixed the problem. However i got the speed sensor code a couple weeks later. When you say pop in a new cluster board you mean the "si board" right?

As far as timing goes its nothing more than a visual check for consistency. since you cant properly check it like an old carbuerated vehicle, i put the timing light on each cylinder and at idle it is normal without any breaks when it stutters, and when the light is pointed down at the harmonic balancer (i think that's the name, where the crank pos. is) you can see the affects of the altered timing produced by the DME to adjust the timing curve, and it produces the same results on all 4 wires. However this is the wires not actual plugs but i feel my problem is beyond plugs. but you never know.

Back to the "si" board if you will, if that would be the problem would it have to be exactly for my car im assuming? or did some of the e36's use the same board?

Also am i wrong in thinking that the speedometer to DME and the rear Diff to the cluster would be separate codes? or did that come with more advanced computers I've heard of speed sensor 1 and 2 and im not sure if there are more than one code that would be given.

For the Coil driver issue what would be more symptoms and solution to the problem, a new ECU? Thanks again for your reply

2

Engine + Driveline / Engine Coughs sputters, jerks, hiccups.. whatever you want to call it

« on: January 17, 2013, 03:44:47 PM »

So my long struggle with this beemer has finally come to M42 club... a couple of new parts that I've put too much money into and i need help. I've Redone vacuum lines and got rid of the mess under the intake, brand spanking new idle control valve, new throttle position, new crank position. New fuel pump and pressure regulator (no new relay). ANYWAY my problem is that if you stop it to the floor it will cough snap and sputter and never really pick up, it's hard to even ease into it and it wants to die and even when you can get the rpm's up, there's not enough power like it should have.
I plugged a timing light in to make sure that i was getting even consistent signal from each cylinder, and when you point it down at the main crank you can see that the timing seems to be advancing correctly and all that crap. when it sputters i can tell that its not an ignition issue. Vacuum lines are all brand new and tidy and there is plenty of fuel in the fuel rail, my thought is, is it getting too much fuel? and if so how the hell do i fix it? one thing i know is that when i unplug the MAF it goes to a 1000 rpm map setting, but when you ease into the throttle it does the same thing... don't know what this means really but there you go. Also the only code I get is a speed sensor (1234) and its the wheel speed sensor on the differential at least i am pretty sure. but please help me I'm beginning to get really frustrated after everything I've done, and i have owned it while it worked properly it was a craigslist deal that I drove about 120 miles back home... NEED IDEAS

3

Engine management / Engine Management Options?

« on: December 14, 2012, 07:49:31 PM »

I'm new to the tuning and engine management systems but i have been working on my 318is for about a year and a half and i have been wondering about getting into tuning it... So far my main problem is ignorance and my noob status, so I would like it if someone could spell out everything I need to do in order to get a nice and reliable(minimally invasive) set up in my car. I've done some research on possibly getting started and too many people have individual opinions and info is so far spread across the spectrum that It's hard to find M42 specific information. My other main issue is that i will be using a Macbook Pro laptop... tuning seems to shun these but i would like to know if anyone has any luck regarding similar setups. Thanks in advance.