The truck has been acting up a lot recently, getting worse last week. She's idling rough, the transmission is slamming into 2nd pretty damn hard and when cruising between 40 -55 mph the rpms bounce. I got to hook up a computer with GM software to her yesterday and poke around a little bit.
Cylinders 3&4 are missing but only at idle, when driving or holding the rpm above 1k the computer showed no misses. Narrowed down the misses to the injectors since the plugs aren't that old and when I pulled them they were fine, the cap and rotor are in good shape and the plug wires are a month old. With the transmission slamming its not consistent, sometimes it hits hard and jerks the truck other times it shifts completely normal, it has the code P1870 so I'll have to fix that.
I don't know why the rpms bounce, when I set the cruise control or keep the mph steady anywhere between 40-55 the rpm bounce by 200-400. At 60 and above she does fine, it might be a transmission issue but I have no clue. The rpms were bouncing a little bit before (and before the transmission started slamming) but it has gotten worse.
She's getting parked this weekend as I don't want to make any of the issues worse and getting her tag swapped over to Ms.Ferguson on Monday.
Cylinders 3&4 are missing but only at idle, when driving or holding the rpm above 1k the computer showed no misses. Narrowed down the misses to the injectors since the plugs aren't that old and when I pulled them they were fine, the cap and rotor are in good shape and the plug wires are a month old. With the transmission slamming its not consistent, sometimes it hits hard and jerks the truck other times it shifts completely normal, it has the code P1870 so I'll have to fix that.
I don't know why the rpms bounce, when I set the cruise control or keep the mph steady anywhere between 40-55 the rpm bounce by 200-400. At 60 and above she does fine, it might be a transmission issue but I have no clue. The rpms were bouncing a little bit before (and before the transmission started slamming) but it has gotten worse.
She's getting parked this weekend as I don't want to make any of the issues worse and getting her tag swapped over to Ms.Ferguson on Monday.