Please help diagnose rough/loping idle
Thread Starter
Staging Lane
Joined: Jan 2014
Posts: 75
Likes: 0
From: Las Vegas
Sorry I didn't see this and include it in my last post. The SES light blinking is a multiple misfire indicator. Most of the other possible problems mentioned are not going to cause this.
Before you get too worried about other problems, be sure of your plugs and wires. Simplest things first.
Occam's Razor and all that. (Look it up).
Before you get too worried about other problems, be sure of your plugs and wires. Simplest things first.
Occam's Razor and all that. (Look it up).
I'll give it a check.
Thread Starter
Staging Lane
Joined: Jan 2014
Posts: 75
Likes: 0
From: Las Vegas
Ok, so I haven't been able to work on the car until yesterday. I removed ignition wires, ignition coils, checked spark plugs, check resistance on the wires and coils. I also checked all the connections for the sensors on the throttle body (IAC, MAF, TPS, IAT). Nothing really stood out/looked visibly damaged, etc. So I decided to start the car up after putting everything back together today.
Started it, and it started its idle at 2000, then it slowly made its way up to 3500. Yes, idling at 35-3700. I turned the engine off, waited maybe 5 minutes, and started it once again. This time, it made it up to 2500 and stayed there, but after maybe a minute running, white smoke started coming out of the engine bay, so I shut it off. Everything was really hot, and when I took out my cold air intake, the throttle body was pretty hot to touch.
Why the hell would the car respond like this after minimal change while sitting for a week? The engine went from barely idling, to revving like it's about to run a 1/4. Anyone have any thoughts on this? Am I wrong in thinking it might be the PCM ******* with the idle and messing with how much air is getting in?
Started it, and it started its idle at 2000, then it slowly made its way up to 3500. Yes, idling at 35-3700. I turned the engine off, waited maybe 5 minutes, and started it once again. This time, it made it up to 2500 and stayed there, but after maybe a minute running, white smoke started coming out of the engine bay, so I shut it off. Everything was really hot, and when I took out my cold air intake, the throttle body was pretty hot to touch.
Why the hell would the car respond like this after minimal change while sitting for a week? The engine went from barely idling, to revving like it's about to run a 1/4. Anyone have any thoughts on this? Am I wrong in thinking it might be the PCM ******* with the idle and messing with how much air is getting in?
