majack82
Newbie
I recently bought an early 1988 Chevy C1500 back in the spring and have been trying to figure out how to solve DTC 13. The SES light comes on every time I drive the truck, however I have discovered that if I really dog on it hard the light will go out. That tells me that the sensor isn't reaching 600F for some reason. I started off with replacing the O2 from the get go as it was original-looking, and being almost 37 years old and 220,000 miles it certainly won't hurt to spend the $18 on one. That did not resolve the problem, so next thing I tried was replacing the blown out donut gasket thinking it couldn't hold enough residual heat to warm the sensor, but that didn't solve it either. Why would it not be getting hot enough? Perhaps a resistance issue with the sensor itself? Maybe it's just a bad one? It's a Bosch brand sensor and I purchased it off of Amazon. I've yet to check any voltages, but since the light will go out once the sensor gets hot I've about convinced myself it's not a voltage issue. 13 has been the only code so far.
1988 Scottsdale, 350/700R4. Bought it for $800. Was parked up about a year because the water pump had gone out. It's pretty much a one-owner truck; I bought it from the original purchaser's daughter. It runs pretty good! We are going to fix it up for my son for his first truck. I live in Arkansas so no rust.
1988 Scottsdale, 350/700R4. Bought it for $800. Was parked up about a year because the water pump had gone out. It's pretty much a one-owner truck; I bought it from the original purchaser's daughter. It runs pretty good! We are going to fix it up for my son for his first truck. I live in Arkansas so no rust.
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