Quote:
|
Originally Posted by Whoaru99
the speedometer stopped working (went to 0 MPH). The speedometer stop working is the first time that has happened.
It stayed this way all the rest of the way home ~15 miles, and had that same doggy feeling and I believe the transmission was not going into lockup. The exhaust also had a different smell to it, sorta sulfury, but not real bad. I suppose that is from this limp home mode? BTW, the car has only 41k miles on it.
Could not retrieve any codes when I tried, the SES light wouldn't flash with the A & B pins jumpered.
Will run through the Service Manual diagnostic procedure tomorrow. Looks pretty simple to ascertain whether on not it's the ECM. Sounds pretty likely though...
I suppose an ECM costs a small fortune?
|
The speedometer not reading is not an effect of the ECM going bad. The transmission will not lock up the torque converter if there is no signal from the VSS. And since your speedo wasn't working, you had no signal from the VSS.
The sulphur smell is from the cat converter, probably running a bit rich with the goings on you have.
If the ECM is bad you usually won't get the SES to flash any codes.
You can get an ECM on E bay sometimes. Here's one (only found one)
http://cgi.ebay.com/ebaymotors/90-92...spagenameZWDVW
You need a "730" ECM. 730 are the last 3 digits of the GM service number. It is also known as a "speed density" ECM.