Before I came here to post my question I DID do a search (see the TSB below for proof). Anyway, this afternoon I was driving my 05 Mustang GT and I noticed the 'service engine soon light' was on. Car seems to be running normal.

I talked to the dealer for advice and he told me I can bring it in Saturday morning and they would take a look at the car.
Now for my question-for those of you that had this problem and the TSB solved the problem, how long did the dealer need to keep the car to make the repairs, and have you had any similer problems since the repair was made?


TSB 04-26-22

Publication Date: December 23, 2004

Malfunction indicator lamp (MIL) illuminated with multiple diagnostic trouble codes (DTCS) P035X and no driveability symptoms - 4.6L 3V Engine


ISSUE
Some 2005 Mustang vehicles equipped with a 4.6L 3-valve engine, may exhibit the MIL illuminated with multiple ignition coil related DTCs (P035X) and no driveability symptoms. The DTCs are typically set during deceleration.


ACTION
Do not replace ignition components for this condition. Reprogram the powertrain control module (PCM) to the latest calibration using WDS release B34.10, or B35.1 and higher. Calibration files may also be obtained at www.motorcraft.com.

 

I don't know much about cars, but I did work in the car rental industry for 10 years.

The service engine light, from what I know, means one of two things: either it is time to service the car -- how many miles do you have on it? Is it time to service the car? :scratch:

Or, it is an idiot light. That's what I would tell you if you were renting the car. It's a light that comes on to make us nuts but it means nothing.

I generally ignore those lights when they come on. Right now I'm driving a car and the oil light comes on every now and again. Its been doing it for weeks. I checked the oil (I have some) so ...

Okay, maybe I'm not very helpful. I don't know much (anything) about cars, but I do know these lights that come on will make you (me) crazy if too much thought is spent on them.