I have spent the past hour to 1.5 hours searching for an answer to my problem. I just bought a 1995 Sable GS from an individual that lived 1.5 hours away. Upon driving the car home I noticed that it would hesitate or jerk a little upon shifting into 3rd gear but once shifted into overdrive it operated smoothly. 1st and 2nd gears shift without any problem also. Well today I was driving the car and it stalled without warning while sitting at a traffic light. No check engine lights displayed. I was able to get it started right back up with no problem. I drove it back home and again noticed the jerking at around 1500 to 1800 RPMs (40-50MPH) held at constant speed. If the gas pedal was pressed it cleared up. Would an IAC
valve cause this trouble? Not a very good feeling after having the car for only a day.
BTW it was owned by an elderly person and only has 59K original miles. Truly a barn find, that's why I hated to pass it up. Thanks in advance for any help.
Welcome to TCCA.
You may have more than one problem.
I like the TPS
idea, so check its resistance for a steady change from closed to wot
The idle stall may be an acting out IAC
, as its responsible for maintaining idle speed when the vehicle is put into gear, the A/C
cycles on, heavy elecreical loads are applied, when the steering wheel is turned & the P/S pump applies engine load, ect
. SO, you might consider removing & cleaning it with a plastic safe spray, like CRC MAF
or QD cleaners, or Valvolene MAF
spray & see if you get positive results. Cleaning may not last, it didn't for me on my 99 Ranger, but was a good trouble shooting step.
More thoughts for consideration, let us know how it goes.