kschaffner
New Member
- Joined
- Mar 14, 2008
- Messages
- 14
- Reaction score
- 0
- Points
- 0
- Vehicle Year
- 2003
- Make / Model
- Ford
- Transmission
- Automatic
Hey everyone,
So I got an oil change last week and since that day I noticed my idle seems to be really high. I checked first to see if the air filter box was closed all the way since they seem to always mess that up and sure enough it wasn't. Putting it back on correctly didn't change the idle at all and neither did resetting the ECM via taking the Neg battery terminal off for about 3 hours. When I slow down to go over speed bumps it feels as if the truck is still getting power and I have to push the brake in pretty good to go over them smoothly. While in park I get 1100-1250 RPM idle with the A/C off, with the A/C on It is about 1k. I've checked the TPS and I get about .88v at idle position and 4.5 at WOT. I've OHM tested the IAC and it read 0.00, I've read that this should be more than 10k and other places say 0.00 is good so I'm kinda lost here. When I unplug the IAC and turn the truck on I get about a 600RPM idle that is kinda rough but as soon as I plug the IAC back in a restart the truck it's right back to 1200. Also I've noted when I rev up the motor in park it will hang at where I lift off for a second, fall to 1500rpm for a second and then fall to 1200.
TLDR:1200 idle at park ac/-off; 1000 a/c-on, .88v-4.5v TPS, 0.00 Ohm IAC, reset ECM via battery disconnect no go
So I got an oil change last week and since that day I noticed my idle seems to be really high. I checked first to see if the air filter box was closed all the way since they seem to always mess that up and sure enough it wasn't. Putting it back on correctly didn't change the idle at all and neither did resetting the ECM via taking the Neg battery terminal off for about 3 hours. When I slow down to go over speed bumps it feels as if the truck is still getting power and I have to push the brake in pretty good to go over them smoothly. While in park I get 1100-1250 RPM idle with the A/C off, with the A/C on It is about 1k. I've checked the TPS and I get about .88v at idle position and 4.5 at WOT. I've OHM tested the IAC and it read 0.00, I've read that this should be more than 10k and other places say 0.00 is good so I'm kinda lost here. When I unplug the IAC and turn the truck on I get about a 600RPM idle that is kinda rough but as soon as I plug the IAC back in a restart the truck it's right back to 1200. Also I've noted when I rev up the motor in park it will hang at where I lift off for a second, fall to 1500rpm for a second and then fall to 1200.
TLDR:1200 idle at park ac/-off; 1000 a/c-on, .88v-4.5v TPS, 0.00 Ohm IAC, reset ECM via battery disconnect no go