I have a '92 SC with the auto transmission, 129,000 miles.
Yesterday while driving to work, I had a problem with the idle. The idle shot up to around 1200 rpm while stopped, and while driving I had to virtually step on the brake to get the car slowed down. After I got to work, I dropped the car off at the Goodyear shop next door (I know I know, bad decision right off the bat) to see if they could find out what the problem was. 5 hours later, after I had to call them, they told me that they didn't know what the problem was with the idle (go figure), but they found a downshift linkage (?) had come loose, and they fixed it for me (thanks???).
Well, I got on here last night and read a few messages about the idle problem, and most everyone answered that it probably was the IAC valve that was causing the high idle. So I went to a local Ford dealership, bought a IAC valve, a replaced the one attached to my throttle body. Lo and behold, idle problem solved!!! (Thanks to all the knowledgeable people who answer posts on this website!)
Now, though, I have a problem with the transmission that I don't know if it was caused by me changing the IAC valve, or by the knuckleheads at Goodyear doing me a favor and re-connecting this downshift linkage.
Under moderate acceleration from stop, I feel the shift from first to second gear, but I hardly see any change in the tachometer. When shifting from second to third gear, the rpms will drop from @2000 rpm to @1800/1900 rpm for 2 or 3 seconds, then again to @1400 rpm. For fourth gear, the transmission won't even shift from third to fourth unless I let off the gas at around 2400 rpm.
Strange thing though, under easy acceleration, the transmission seems to shift fine.
Sorry for the long post, but I felt I needed to give a little background about my problem. Any help would be greatly appreciated!
Yesterday while driving to work, I had a problem with the idle. The idle shot up to around 1200 rpm while stopped, and while driving I had to virtually step on the brake to get the car slowed down. After I got to work, I dropped the car off at the Goodyear shop next door (I know I know, bad decision right off the bat) to see if they could find out what the problem was. 5 hours later, after I had to call them, they told me that they didn't know what the problem was with the idle (go figure), but they found a downshift linkage (?) had come loose, and they fixed it for me (thanks???).
Well, I got on here last night and read a few messages about the idle problem, and most everyone answered that it probably was the IAC valve that was causing the high idle. So I went to a local Ford dealership, bought a IAC valve, a replaced the one attached to my throttle body. Lo and behold, idle problem solved!!! (Thanks to all the knowledgeable people who answer posts on this website!)
Now, though, I have a problem with the transmission that I don't know if it was caused by me changing the IAC valve, or by the knuckleheads at Goodyear doing me a favor and re-connecting this downshift linkage.
Under moderate acceleration from stop, I feel the shift from first to second gear, but I hardly see any change in the tachometer. When shifting from second to third gear, the rpms will drop from @2000 rpm to @1800/1900 rpm for 2 or 3 seconds, then again to @1400 rpm. For fourth gear, the transmission won't even shift from third to fourth unless I let off the gas at around 2400 rpm.
Strange thing though, under easy acceleration, the transmission seems to shift fine.
Sorry for the long post, but I felt I needed to give a little background about my problem. Any help would be greatly appreciated!