Re: 2 quick questions(CHAD)

From: Chad (mcc@negia.net)
Date: Sat Jun 03 2000 - 21:45:34 EDT


Kyle,

Below is a novel I just wrote about what happened when the crankshaft
position sensor went bad.

The Crankshaft Position sensor is located on the the upper left hand
side of the transmission bell housing. (standing in front of truck
facing it) I replaced it because it had melted slightly and was shorting
out randomly. Before this happened, my truck ran great. Then one day it
stalled out while I was leaving my brothers house. He has a very long
driveway. I was going down it about 30mph when my truck just died. I
tried to crank it, but it wouldn't. I waited about five minutes. Tried
again. Truck was running like a champ. I turned out of his driveway and
went about 1/4 of a mile when it died again. Waited about 30 minutes,
but the truck would not start.

I called a friend on my cell phone to come pick me up. Later that
evening... about 5 hours later, I went back and tried it. The truck
fired right up and ran like a champ.
It didn't do that again for about 3 months. Then one day it just died
again. I started the truck right back up and continued on my way. I had
been blaming this problem so far on bad gas.

3 months later it did it again. My truck would not start for about 45
minutes... then it fired right up. On the way home though, it was
running about 400rpms less that it normally did and was trying to stall.
The only way it would stay running was to drop into a lower gear and run
about 3000-3500 rpms. Whenever I stopped, I'd have to keep the gas
pressed down, while working the clutch and brake, or else it would
stall. The next day, the same thing happened. I started looking for a
mechanic... calling friends etc... I drove the truck the next day with
no problems. The next day I couldn't keep it running.

I myself thought I had a bad pcm. I pulled it out and the connections
were corroded. I cleaned them and put dielectrode grease on them. It
seemed to help, or so I thought it did, for the next few days.

I drove it to the mechanic with no problems. I used the DML calculator
to look up the codes I pulled from the computer. One of the codes
was(can't remember number): No signal from crank sensor. So, I told the
mechanic this. He used a multimeter to check the crankshaft position
sensor and found that the voltage had went way up... You could look at
it and tell something was wrong. It was noticeably melted.

The crankshaft position sensor itself cost $40. Labor was only about
$20, but the mechanic was a friends friend and cut me a break.

So, to summarize, the problem was very intermittent at first and caused
the truck to either not run, or run very rough when it did run. Turns
out the sensor was shorted out and was telling the PCM that the
crankshaft was in a different position that it was actually in.

Anyway, that is my very detailed description of the problem and what
happened.

Anymore questions? Let me know.

Chad

Kyle Kozubal wrote:
>
> > I have 68,000 on my '95 Dak Sport CC V6 5sp. I've replaced the
> > crankshaft position sensor.
>
> Chad,
> Just curious, but where is this sensor located and why did you replace it?
> How did the truck run before and after, or what symptoms made you replace
> it? Price? Thanks,
> Kyle
> 93 Dakota 4x4 V6



This archive was generated by hypermail 2b29 : Fri Jun 20 2003 - 11:51:39 EDT