Irregular idle on Deceleration
#21
I guess I could try it. At this point I hate throwing money at stuff that I am not sure is causing the problem. I am pretty sure if it was bad the throttle body would be putting off a code
Last edited by simplexdesign; 03-24-2010 at 02:18 PM.
#23
You aren't the only one. Sometimes, usually when both the engine and the weather are cold, coasting clutch-in to a stop sign rpm drops to 500 or less and stalls. I don't see rpm jumping around through.
I've tried all sorts of stuff.
Car is currently getting a dyno tune for other reasons. Hope it helps. I kinda doubt it.
I've tried all sorts of stuff.
Car is currently getting a dyno tune for other reasons. Hope it helps. I kinda doubt it.
#24
Is that awesome looking hood of yours functional? The reason I asked is that back when I had my 08 V6 pony car, I installed a CDC Shaker and plumbed it in to my cold air intake. I had the same issues as you describe. I had just loaded a custom tune by Doug at Bama so I called him to discuss it. We ecided it sounded like it might be that the airflow turbulence from the air coming in from the shaker might be honking up the MAF. I fabricated an air deflector so that the air coming in did not blow directly on my filter and it cured the problem immediately. I only had the problem with it irradic idle and dieing while moving down the road, stopped I had no issues. Just an idea.
#25
Is that awesome looking hood of yours functional? The reason I asked is that back when I had my 08 V6 pony car, I installed a CDC Shaker and plumbed it in to my cold air intake. I had the same issues as you describe. I had just loaded a custom tune by Doug at Bama so I called him to discuss it. We ecided it sounded like it might be that the airflow turbulence from the air coming in from the shaker might be honking up the MAF. I fabricated an air deflector so that the air coming in did not blow directly on my filter and it cured the problem immediately. I only had the problem with it irradic idle and dieing while moving down the road, stopped I had no issues. Just an idea.
The Hood has been on for a few years so I doubt it would start the problem out of nowhere
#26
After trying everything that I mentioned above I gave in and took it to the dealership to let them figure it out. They came back with a low voltage on the TB so they recommended to replace it. Obviously I wasnt going to pay their $500+ to install one so I ordered a new take off TB from Brenspeed installed it and I am still having the problem. Any help at this point would be greatly appreciated because I am really at a loss with what is causing the problem. My next idea was the O2 Sensors but apparently ford checked them out and they were fine
Last edited by simplexdesign; 04-20-2010 at 02:33 PM.
#28
I honestly dont remember how they said they found it since while it was there they re flashed my computer after they were told not to so I had to get new tunes made and then they ran my front bumper into a curb and are repainting it next week. So at the time I took their word that it was a TB
#29
Even with a slight vacuum leak or intake leak, the IAC and fuel trims should keep the idle steady.
Last edited by moosestang; 04-20-2010 at 04:13 PM.
#30
My Fuel Trims have been looked at with Dave from Brenspeed on the phone and they are fine. The few Vacuum lines have been checked.
I dont think 05+ Mustangs have a IAC
Last edited by simplexdesign; 04-20-2010 at 04:10 PM.