Uh oh..

[Gatorboy]

12 means nothing, you have to read the code that comes after that

 

[94K1500KBAR]

Sorry misread it lol it is 15. Engine Coolant temperature (ECT) sensor too high?

 

[Gatorboy]

Replace it lol should be on top of the intake manifold. Could just be coincidence that it went at the same time

 

[supertrucker1978]

If the coolant sensor goes bad it will run like crap. I just replaced mine, its a pretty cheap and easy fix.

 

[ChrisAU]

Top of the intake manifold, not throttle body.

 

[94K1500KBAR]

On the throttle body? Of a 1994 4.3l ? And it's possible it went bad I'm sure. But what's the chances? Lol

 

[Gatorboy]

The intake manifold I meant. Sorry I'm shopping with my girlfriend I can't think right now lol

 

[supertrucker1978]

Its at the very front of the engine on the intake. Mine is literally behind the A/C compressor on my 305. And the chances are pretty good. I was putting new wheel cylinders in, took my truck for a test drive and about 3 blocks away mine went just out of the blue. Had a hell of a time getting the truck home.

 

[94K1500KBAR]

Replaced. Still ready code 15?

 

[supertrucker1978]

Is it running better?