Alright after having my car one year I finally had my first issue. Today I went to the bank then came back home ( car ran flawlessly ). While cutting my grass I had to move the car to the opposite side of the drive way so I fired her up when I pressed the gas it started to stutter like it had an extreme miss fire. When I looked at the display I notice that the little orange wrench was illuminated. I was like what the hell does that mean, so I immediately shut the car off and popped the hood. Now this is my first tuned / modified N/a car.

The best way to describe how the car felt or sounded was if your in a boosted turbo car it felt like a intercooler pipe had come off. I wiggled the intake around, it was still tight, then I checked the fitting for the pcv valve that connects to the JLT intake, not loose. I then grabbed my SCT and plugged it in. NO Codes found.

So I started the car back up and the wrench was no longer on and drove normal. I checked my plugs last week and no signs of the dreaded #8 failure. Anyone ever have this issue? If so what should I look for?


Car info

2011 GT
JLT Intake
Lethal O/R H pipe
Magnaflow cat back
Kurgan Tune
around 6400 miles
All Mods of been on the car for around 5000 miles.

 

Any computer controlled car can do that under the right circumstances. So if it ran fine before and after, chalk it up to the computer getting confused. There is no such thing as a perfect computer program. Google IEFBR14 history. It was a ONE LINE assembler program from IBM back in the days. Sure enough it had a bug; they forgot to add the line to ensure a zero return code.

 

If it does it again you might have a loose wire on the CHT sensor. I messed mine up when I installed a Boss intake. Ford said the wire itself is really finicky. My symptoms where No A/c No water temperature and limp mode. After a shut down and restart the limp mode went away, but the lack of A/c and no temp reading stayed

 

mine gets chokey soemtimes right after being started. Ill rev it and itll stutter. Weird..

 

Hmm Ive never used my ac before but Ill check it next time I take the car out. thanks


At first start up the car is in open loop so that why you get the stutter, I've always let my cars idle down before I get on the throttle. If I have time I let the car warm up for at least a full min or two.


Guess it was just a random fluke since the car has not done it again.

 

Mike, the times mine has done it it was just after startup but not cold. The car was still at full operating temp or close to it....

 

You know, they make pills now that will help you get out of limp mode. Luckily I've never had that problem.

 

That's not what she said!