I need your help, engine shutting off when I stop.

Jsanders · Post by **Jsanders** » Jul 11, 2011 1:21 AM

So I've been working on my e28 quite a bit over this last year trying to make it a reliable daily driver, and I'm almost there.

The car is a '83 533i with a 745/k27 turbo system. It now starts, idles, and drives fine, but when I come to a complete stop at a stop sign, half the time it will die. I don't lose power to anything inside of the car, the engine just shuts off.

Within the last year I have replace the following:

Distributor cap and rotor
Spark plug wires
Coil
Speed sensor
Reference sensor
Fuel filter

I have tried using two different ECU's, nothing changed. I also replaced the Main Relay. All the fuses have been inspected and connections are clean.

Tomorrow I'm going to try cleaning ground point G103 towards the rear of the head. If that doesnt work, what should I try next?

CoyoteStarfish · Post by **CoyoteStarfish** » Jul 11, 2011 1:35 AM

Hmm. Auto or standard? My thoughts are vacuum or torque converter.

pldlnr · Post by **pldlnr** » Jul 11, 2011 2:04 AM

Take a look at the idle control valve. Make sure it is working. Also, it never hurts to give it a good cleaning.

wkohler · Post by **wkohler** » Jul 11, 2011 2:09 AM

Check the throttle position sensor adjustment.

Boiwonder · Post by **Boiwonder** » Jul 11, 2011 3:33 AM

Idle air control.
You might have a fat vacuum leak around that area.
have had that before but on an e34

Jsanders · Post by **Jsanders** » Jul 11, 2011 12:53 PM

It has a manual transmission.

I forgot to mention that every time it dies, it will immediately start right back up, no hesitation or anything.

I'll go ahead and give the ICV a good cleaning, check the throttle position sensor, look for vacuum leaks, and check the Idle Air Control valve tonight.

Snakeyestx · Post by **Snakeyestx** » Jul 11, 2011 2:17 PM

You have inadvertently discovered the predecessor to the stop-start system?

Jsanders · Post by **Jsanders** » Jul 11, 2011 10:44 PM

Patent Pending

On a more serious note, I'm in the process of cleaning the ICV. A few hoses were destroyed when I removed it, so I'm ordering all of the hoses from the dealer in the a.m. I have a feeling this might do the trick, but even if it doesn't I'll be happy knowing everything down there is in good shape.

usefulidiot · Post by **usefulidiot** » Jul 12, 2011 9:31 AM

my M5 does the exact same thing, but if i blip the throttle real quick while coming to a stop it won't stall. New to me car-havent gotten around to the ICV yet.

Jsanders · Post by **Jsanders** » Jul 12, 2011 2:09 PM

I'll keep you updated. Parts should be here by Friday.

ahab · Post by **ahab** » Jul 12, 2011 2:11 PM

It might be worth throwing a meter on the speed and reference sensors to ensure they're within spec too.

Pino Yeats · Post by **Pino Yeats** » Jul 12, 2011 2:38 PM

Jsanders wrote:So I've been working on my e28 quite a bit over this last year trying to make it a reliable daily driver, and I'm almost there.

The car is a '83 533i with a 745/k27 turbo system. It now starts, idles, and drives fine, but when I come to a complete stop at a stop sign, half the time it will die. I don't lose power to anything inside of the car, the engine just shuts off.

Within the last year I have replace the following:

Distributor cap and rotor
Spark plug wires
Coil
Speed sensor
Reference sensor
Fuel filter

I have tried using two different ECU's, nothing changed. I also replaced the Main Relay. All the fuses have been inspected and connections are clean.

Tomorrow I'm going to try cleaning ground point G103 towards the rear of the head. If that doesnt work, what should I try next?

* * * * *
Hi, this is my first posting up here, great site. Wish more of you lot were on this side on the pond...

So with regard to the above posting, I experienced the same problem and all was sorted with a new Fuel Pump Relay.

I know the original posting was years ago but hey!!! hope this helps

Yo!

Jsanders · Post by **Jsanders** » Jul 12, 2011 6:32 PM

Actually, the original post is from 2 days ago.

I already tried switching the fuel pump relay with another with no resolve. Thanks for the info though, maybe it will help somebody else in the future.

Jsanders · Post by **Jsanders** » Jul 12, 2011 8:38 PM

I tested the icv with a battery and it's dead. Is there a good place to get these new?

NoM54me · Post by **NoM54me** » Jul 12, 2011 10:57 PM

Autohausaz, $185 for a VDO...Pelican Parts is $220 for the same. Sometimes these can be used from Volvo 240/740 with Bosch ignition.

Jsanders · Post by **Jsanders** » Jul 13, 2011 12:44 AM

Why do you say sometimes?

NoM54me · Post by **NoM54me** » Jul 13, 2011 1:10 AM

Sometimes the electrical connectors look different. But the ICV from my Volvo 240 plugged right in to my 533...seemed to work great, too.

pldlnr · Post by **pldlnr** » Jul 13, 2011 1:46 AM

Jsanders wrote:I tested the icv with a battery and it's dead. Is there a good place to get these new?

These don't really fail that often. I think it would be fine to get a good used ICV. Put up a wanted ad for a known good unit.

Jsanders · Post by **Jsanders** » Jul 13, 2011 10:27 AM

pldlnr wrote:
Jsanders wrote:I tested the icv with a battery and it's dead. Is there a good place to get these new?
These don't really fail that often. I think it would be fine to get a good used ICV. Put up a wanted ad for a known good unit.

I already found one, just waiting on the guys paypal info.

pldlnr · Post by **pldlnr** » Jul 13, 2011 11:13 AM

Jsanders · Post by **Jsanders** » Jul 18, 2011 9:08 PM

Just installed the new ICV and my "refreshed" AFM, so far it hasn't cut out on me. It also seems to be starting a bit rougher than before, and running cooler.

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I need your help, engine shutting off when I stop.

I need your help, engine shutting off when I stop.

Re: I need your help, engine shutting off when I stop.