Big Snow here in NE, now rough idle?
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Big Snow here in NE, now rough idle?
I've noticed for a few months that my truck doesn't like the rain or snow. It tends to idle very sporadically in park and especially when at a stop light. It also hesitates in rpms up to about 45mph. From what I've gathered on here, it could be the TPS or a bad/wet cap and rotor. The cap and rotor were new when I swapped engines in the fall, but could them being wet just be my problem?
I also hooked up my TPS to a volt meter last night and got some unusual readings. I took the sensor off to do it and was getting a reading of 5.10 to 3.5 to 0.01 and kind of all over the place. I read different threads about how to test the TPS and followed them pretty accurately.
What do you guys say? Thanks.
I also hooked up my TPS to a volt meter last night and got some unusual readings. I took the sensor off to do it and was getting a reading of 5.10 to 3.5 to 0.01 and kind of all over the place. I read different threads about how to test the TPS and followed them pretty accurately.
What do you guys say? Thanks.
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You need to test the TPS with an ohmmeter, it is a potentiometer, it increases and decreases resistance to give the computer the proper throttle reading. Hook up your multimeter to it and then turn the TPS, the resistance should increase evenly. If it has a bump or if there are any jumps to an open circuit it is bad and needs to be replaced.
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Replaced the sensor and I thought while I was in there I would put on my new 52mm throttle body. I drove her pretty nicely the whole way home from the shop but noticed that when I came to a stop it started sputtering and had a real loud hiss-like sound from the hood. This is what was happening before I replaced the sensor, so I don't think that's it? I reset the PCM for the new TB as I was told and then reloaded the 91 tune from my SCT. Any more suggestions?
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Didn't get a chance to read the fuel pressure, but I did notice that every once in awhile while driving, when I came to a stop it felt like I had the foot on the accelerator and the brake. So I put her into neutral and it was idling at like 2k. I shut it off and started it back up and it was fine. Happened to me twice in like 30 miles.