- Aug 19, 2014
- 2
- 0
- 1
Hi everyone,
So I just bought an 89 Gt from my mom who no longer Dove him. He sat for I'm not sure how long and was lucky enough to get started and ran at idle maybe once a week. First thing I noticed was a SURGING IDLE, until he warmed up. (Almost like a mis fire).
First thing I did was put new oil/filter and transmission fluid/filter, spark plugs/wires and distributor cap on. After the tune up, he shifts funky (1/2 is quick and smooth, the 2/3 is at like 4000 rpms. And 3/4 is about the same) and continued idle weird. I fidgeted with the throttle position sensor, and spayed some throttle body cleaner in the throttle body and part of the idle air control valve to clean some gunk ( sprayed and cleaned where i can reach without disassembling the throttle body or IAC Valve). Now the idle seems better but low at operating temps, and the shifting seems to improve when "whitey ford" is all warmed up.
This is my first mustang and I'm excited to get him running good. Any suggestions to what's going on here. I figured it may be the TPS, IAC, or EGR, but idk if they would affect the shifting.
Also gas mileage is pretty terrible right now.
Thanks for any suggestions,
Derek
So I just bought an 89 Gt from my mom who no longer Dove him. He sat for I'm not sure how long and was lucky enough to get started and ran at idle maybe once a week. First thing I noticed was a SURGING IDLE, until he warmed up. (Almost like a mis fire).
First thing I did was put new oil/filter and transmission fluid/filter, spark plugs/wires and distributor cap on. After the tune up, he shifts funky (1/2 is quick and smooth, the 2/3 is at like 4000 rpms. And 3/4 is about the same) and continued idle weird. I fidgeted with the throttle position sensor, and spayed some throttle body cleaner in the throttle body and part of the idle air control valve to clean some gunk ( sprayed and cleaned where i can reach without disassembling the throttle body or IAC Valve). Now the idle seems better but low at operating temps, and the shifting seems to improve when "whitey ford" is all warmed up.
This is my first mustang and I'm excited to get him running good. Any suggestions to what's going on here. I figured it may be the TPS, IAC, or EGR, but idk if they would affect the shifting.
Also gas mileage is pretty terrible right now.
Thanks for any suggestions,
Derek