Hello all, I'm curious if anyone could answer a question for me on the topic of strange idling.
Issue started like this, one night like every other it idled warm in park at ~800 then the next day it started cold at 1000 and when warm idled in park at about 1200. We originally thought it might be an issue with the acsd but it appears to have already been deleted by a previous owner. We then tried looking for a vacuum leak.
We couldn't locate a source for a vacuum leak so we tried resetting the ecu to see what would happen. Started at 800 but after driving to work it idled at around 1400. Reset the ecu again and back down to 1200. We also checked to see if turning on the ac would change anything, and no change in the rpm.
Thank you for your time.
Model is a '91 Hzj77 for reference
Issue started like this, one night like every other it idled warm in park at ~800 then the next day it started cold at 1000 and when warm idled in park at about 1200. We originally thought it might be an issue with the acsd but it appears to have already been deleted by a previous owner. We then tried looking for a vacuum leak.
We couldn't locate a source for a vacuum leak so we tried resetting the ecu to see what would happen. Started at 800 but after driving to work it idled at around 1400. Reset the ecu again and back down to 1200. We also checked to see if turning on the ac would change anything, and no change in the rpm.
Thank you for your time.
Model is a '91 Hzj77 for reference