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bimmerfan02
04-13-2005, 10:23 PM
The symptoms.
Engine will take either 1 second to shut off or 15 seconds.
The door locks will work sometimes and won't work other times.
I can tell when the engine will take 15 seconds to shut off. The doors have not unlocked. But as soon as I turn the ignition off, the doors unlock. (Except for drivers' rear)
So I suspect an ignition switch.
How do I test it?
Is it rebuildable?

I also have a hard plastic vacuum hose coming out of side of the fuel pump, after the 3-way connector, going through the firewall to... nothing.
I can see see where it connects to and I can't beleive that it is supposed to be this way.

Any help would be appreciated.
Pierre BMW CCA
1969 2002 (Herb)
1974 2002tii (Henry)
1974 2002 (Sam)
1986 325e (Betsy)
1991 318is (Ross)
1981 MB 300D (Ben)
1992 Chevy Astro (Regis)
Camarillo, CA
<img src="http://65.28.100.14/imageHosting/images/pachamaa/my2002s/Poster1.jpg">

C.D.iesel
04-14-2005, 07:52 AM
EARLY STAGE OF MOTOR OIL entering the vacuum system and it will ruin the vac switch mounted at the steering /ignition lock . Remove the lower dash panel, disconnect the speedo cable from behind, carefully fush out the instrument cluster, unscrew the hard oil pressure hose to it's gauge, do not gouge the dash padding with the light reostat while doing all this. NOW you can remove the two vac hoses to the key vacuum switch and inspect for the presence of oil dripping out of the hoses, and if oil is there - replace the vacuum switch and the rubber hoses, and start cleaning back to the source of the oil - the motor.
The oil isually comes from a leaking Vacuum Pump Diaphram at the front of the motor. Oil will be present also in the brake booster hose and all the other vacuum hoses in the motor room. Any rubber hose with the oil in it must be replaced, and the hard plactic hoses flushed clean with a degreasing spray cleaner like Brakekleen. Where ever oil got to, those vacuum swirches need to be replaced also. The diesel motor oil eats them inside. Of course replacing the vacuum pump diaphram is another job to do. Oil doesn't make it to the doors, so they are not a worry. They will resume operation when all the other stuff is addressed.

installing a small see through inline gas filter at the brake booster T fitting will give you future early warning of the presence of oil , and prevent oil traveling further into all the branches of hoses just at that booster hose T supply fitting. This was a M-B Service Bulletin ages ago.

bimmerfan02
04-14-2005, 11:30 PM
There is no evidence of oil AT ALL. It's all dry.
I replaced all my 3-way and 4-way rubber connectors.
The problem persists.

I also suspect the transmission vacuum modulator. The shifts are fairly harsh and when attaching a vacuum pump, it won't hold vacuum. But again, I don't know if it's supoosed to.

Pierre BMW CCA
1969 2002 (Herb)
1974 2002tii (Henry)
1974 2002 (Sam)
1986 325e (Betsy)
1991 318is (Ross)
1981 MB 300D (Ben)
1992 Chevy Astro (Regis)
Camarillo, CA
<img src="http://65.28.100.14/imageHosting/images/pachamaa/my2002s/Poster1.jpg">

C.D.iesel
04-15-2005, 07:42 PM
another common LOW VACUUM source problem is the main vac source hose coming off of the booster vacuum pipe (fitting is near the top of the drivers side shock top)pull off the vacuum hose leading to your 3 &4-way hoses - poke a tiny pin inside the hose tap so you'd be pushing the pin into the heavy booster plastic hose. That tiny vacuum source orifice can become clogged with dirt. That is your main vacuum source for all the vacuum consumers: ignition/switch off, door locks, climate control, trans vac modulator, EGR. After running a pin into the orifice, attach a vacuum gauge and test the reading - this willbe your main vac reading direct from the pump at the front of the motor.

Are your brakes ok ? , normal softish brake pedal?, or is the pedal unusualy hard and it take a higher pedal effort to stop the car?

Pierre
05-05-2005, 01:06 AM
Brakes feel fine.
Here is another interesting symptom.
When I unlock the car in the morning, the driver's door unlocks, but the other 3 stay locked. The doors would stay locked throughout the commute to work. But when I shut the car down, (turn the ignition switch off) and while it's slowly idling down, the door locks will perk up and unlock.

C.D.iesel
05-05-2005, 05:31 AM


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