I have the 5-speed, date on the door is 06/91 - these days the next year models are already on the lot by that time, so who knows where June was in the production series for the '91. *Well*, I imagine someone knows, but I don't. Anyhoo, I plug the code reader in, it gives me a three-digit code, I replace the whatsit that needs replacing according to the three-digit code, that pesky check-engine light goes off, truck runs a little less stupider than it did when the check engine light was on.

 

Truck passed emissions today - as the saying goes - with flying colors. The usual low numbers I had always come to expect from this truck. Yeah.

The moral to the story? Let me sum up with a cautionary tale I first remember hearing in my yoot:

For want of a nail the shoe was lost.
For want of a shoe the horse was lost.
For want of a horse the rider was lost.
All for the want of a nail.

 

So what did you replace this time to get it to pass?

 

So...what did you replace this time to get it to pass?

 

Coolant temperature sensor. Eventually threw in the towel and found a great little shop where the guy hooked up everything he had to it - I was right within spec on everything, but hello the CTS stayed a nice frosty 87* the whole time. Part of me knew it, too - but I was done throwing parts at it. I paid the man, hit the O'Reillys on the way home, switched it out in the parking lot at work in less than 15 minutes. It was a whole new truck.

Numbers went from four times the standard to less than 1/4 the standard.