Four0Sport
Jack from JackOffRoad
- Joined
- August 26, 2004
- Messages
- 3,026
- Reaction score
- 113
- City, State
- West Virginia
- Year, Model & Trim Level
- 1993 2dr
had a day off.. decided to do some things to the 93
- recharged K&N
- degreased valve covers/side of heads
- oil change
- plugs (actually the plugs were 2 days ago)
- cleaned MAF (2 days ago)
rinsed off the degreaser (alt. coil pack, and power dist. box were covered), let it run at idle for 15 mins, shut the vehicle off. changed the oil, let it idle again for 15 mins, shut the vehicle off. get in it to run into town and bout a mile from my house i noticed a miss when im not accelerating. engine shuts off at 2 stop lights. i get what i need in town and take the quickest way home, the interstate. vehicle shifts HARD, misses when not accelerating, CEL comes on, goes out, comes back on later, goes back out.
i immediately came inside and made a jumper wire to read the KOEO quick codes and come up with 111 (system pass) 111 (system pass) 157 (MAF sensor below voltage) 158 (MAF sensor above voltage). a bad maf explains the hard shifting and the miss so i grabbed my maf cleaner, sprayed it down, put everything back together, pulled the negative terminal. i did notice a couple dark spots on the MAF wires, filter oil? not sure.
start the truck, noticeable rough idle, no CEL. slowly accelerate, smooth-ER idle, no CEL. tap the pedal a couple times quickly, CEL comes on. same codes.
Ive been driving my 93 back and forth to work bc my cam sensor/synchro in my 97 is getting replaced on wednesday and now im SOL. Ive never had problems degreasing engines before. could it be as simple as a bad MAF?
Thanks for all the help in the past, hopefully i can get this figured out relatively quick.
- recharged K&N
- degreased valve covers/side of heads
- oil change
- plugs (actually the plugs were 2 days ago)
- cleaned MAF (2 days ago)
rinsed off the degreaser (alt. coil pack, and power dist. box were covered), let it run at idle for 15 mins, shut the vehicle off. changed the oil, let it idle again for 15 mins, shut the vehicle off. get in it to run into town and bout a mile from my house i noticed a miss when im not accelerating. engine shuts off at 2 stop lights. i get what i need in town and take the quickest way home, the interstate. vehicle shifts HARD, misses when not accelerating, CEL comes on, goes out, comes back on later, goes back out.
i immediately came inside and made a jumper wire to read the KOEO quick codes and come up with 111 (system pass) 111 (system pass) 157 (MAF sensor below voltage) 158 (MAF sensor above voltage). a bad maf explains the hard shifting and the miss so i grabbed my maf cleaner, sprayed it down, put everything back together, pulled the negative terminal. i did notice a couple dark spots on the MAF wires, filter oil? not sure.
start the truck, noticeable rough idle, no CEL. slowly accelerate, smooth-ER idle, no CEL. tap the pedal a couple times quickly, CEL comes on. same codes.
Ive been driving my 93 back and forth to work bc my cam sensor/synchro in my 97 is getting replaced on wednesday and now im SOL. Ive never had problems degreasing engines before. could it be as simple as a bad MAF?
Thanks for all the help in the past, hopefully i can get this figured out relatively quick.