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Yes, after we turn of the engine. Temp reading has been done by the touch. Touch lower pipe on the muffler then touch the cat. Cat is much hotter. You also feel the heat coming of the Cat when wife is getting out of truck when I drop her at work. Is this a symptom of anything?
Engine is running ok but i have been burning crazy gasoline. In fact that is why I was under truck. I was fixing leaks from exhaust manifold all the way through. Changed the 02 sensors. Tested most of the related sensors except for cooling temp sensor and one other. Checked air intake, Mass Air Flow and Throttle Pressure Sensors. TPS had to be adjusted and we did that. I was going to buy a pressure gauge today so that I can test the fuel pressure next. Fuel return worked ok when we tested it last weekend also.
I am getting 5mpg and I dont know why. Its killing my budget.
In the last 3 months, i have new plugs, air filter, oil filter. Did some work on an oil leak and muffler when the gas mileage just shot up. Been trying to chase it down ever since. Im just going through the codes and suggested remedies.The 25 code has been persistent. Seems the 24 and 31 have not re-lit since fixing a leak in the pipe near the manifold.
I have not done injection work yet because it seems unlikely given how the car is running.
Yes. Lean Fuel.