So I bought this car about a week ago, had a friend look it over and everything seemed fine. We both drove it, I was able to make a good deal on the car (or so I thought…), and we agreed on a time and place to switch everything over a few days later. I left work for a little bit to get that taken care of, it drove perfectly from the notary to my work, and then it sat for maybe 6 hours. When I went to leave work that evening I pulled out onto the road and suddenly had no acceleration so I managed to drift into the car wash that I was by. It was revving really low and barely creeping along but once I was able to pick up some speed, I did a few laps around the car wash and everything seemed fine so I drove home. Later that night I went to go out for a bit and the same thing, barely creeped along til I got going for a few minutes then it drove normally. The check engine light came on after I had gotten to my destination and started up the car again. It has been sitting at my house since and my friend that I had look at it can’t really figure out what the problem is.
When it is in park or neutral it revs up normally, but when it is in drive or reverse it’s very weak, kind of just bounces up and down between 1k-2k rpms. I haven’t taken it back out because I’m afraid it might not pick up again like it had before after getting it going a bit.
I’ve searched my problem and found a lot of people with the same thing saying that it is the throttle position sensor, and I’m really hoping it’s something like that and not a transmission. The alternator and battery are new. It doesn’t seem to have any power issues, it starts up and idles just fine, and nothing dims at all.
I also have the list of codes that he pulled with the OBD scanner- P1778 stepper motor/function
P1715 input pulley speed signal
P1574 automatic speed control device (ascd) vehicle speed sensor
P0720 output speed sensor circuit
P0746 pressure control solenoid a performance/stuck off
P1701 power supply circuit
P0615 starter relay
P1778 step motor/ function
P0868 transmission fluid pressure low
I was going to get a throttle position sensor just to see if that would fix the acceleration problem but he doesn’t think that’ll fix it Has anyone had a similar problem or have any idea on what the problem(s) are??
I really hope I didn’t get burned too bad on this