Quote:
Originally Posted by 67malibu
I answered most of the questions in the original post. I measured CTS voltage and got values within 10% of specs (the one I replaced last year gave resistance reading way out of spec - yes I test parts when possible before replacing.) The TBI is not stock, it is the 670cfm Holley aftermarket. I put that one on about 10 years ago due to the stock one being worn out (220K miles.) The new TBI had operated flawlessly for a good 8 years before this issue began. There computer communicates fine and is clear of codes. This is an '88, no air temperature sensor. When I get time I will do what I was going to and run some new wires around.
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cannot comment on cold resistance no temp, on normal engine temp this should read 170-200 ohms. in the hot weather should be closer to 170 ohms.
when the sensor resistance is higher than spec, the engine will be fed more fuel. the injector open time will be longer.
you could also have EGR issues . EGR opening too much and or not closing properly. this would lower engine temp and cause rich conditions.