Kylebg94
OBS Enthusiast
Alright so earlier I replaced the tps sensor that was physically broken. The back housing had broken off. And after unplugging the battery when it reved really high. To reset everything. It ran perfectly smooth. And tonight, as I was going to fire it up. The service engine light pops back up. And it started back reving really high again. It continued consistently until say 6 minutes of idling. Then it calmed down, and r a few minutes. It started back up. Then I turned it off, Crunk back up. And it started surging up and down( the idle) again. So I went and checked the connections. I wiggled them, nothing changed. So I took everything back off and plugged it back up. Made sure it was all tight. Then it started right back. So I switched the old tps back in. While it was running to see if it changed the idling issue. And it did calm the idle down. And it ran normal for awhile. But then it started back a few minutes later. So I took it for a short drive. And it's shifting oddly again. Basically the truck is holding onto the gears way to long now. Literally it will stay in 1, 2nd gear and not shift as long as I'm accelerating. It is shifting hard when it does shift into gear and between gears. While idling in park, I gave it gas. To to see how the revs are. I noticed that when I rev it, it's a delay in the response time. It even seemed hesitant to wanna rev high sometimes.
My truck is acting quite similar to this guys example of a bad distributor.
I will be taking it in the shop on Tuesday. Because without a scan tool. I would just be throwing my best guess at something that might not even be the problem. Which leads me to wasting unnecessary money.
My truck is acting quite similar to this guys example of a bad distributor.
I will be taking it in the shop on Tuesday. Because without a scan tool. I would just be throwing my best guess at something that might not even be the problem. Which leads me to wasting unnecessary money.
So I replaced the map sensor and tps sensor. For awhile the truck ran fine. Shifted fine ect. After driving it again on the way to work. The service engine light came back. And at the lower gears of 1 to 2 and 2 to 3. It shifted hard again. The idle is running rough again as well. The problem keeps coming and going. I don't know what else to say about it. But clearly the other two issues weren't it. If I turn it off and start back up. It will stop and it won't do it for awhile.Makes sense, given the variability of your symptoms. Replace both with OEM equivalents once you confirm they are in fact bad and it's not a poor electrical connection or something else triggering those codes...Once you have new sensors in place, your harsh shifting symptoms should go away....The MAF influences the PCM's management of transmission internal line pressure so if it's over reporting or under reporting air flow, the AFM will also be off and consequently, the line pressure curve will also be out of phase. The TPS data stream is also used by the PCM to control the transmission, including playing a part in line rise response by the EPC to throttle input...same deal, if the TPS is reporting inaccurately to the PCM, well - garbage in, garbage out.
Let us know what happens once you have done the repairs.