Sudden loss of Power, No Throttle Response, **See Manual**??

[DeepImpactS550]

I was on the way home from work tonight when weirdness ensued. I had shifted into 2nd gear (manual trans) a bit low, at about 1800RPM. I rolled on the throttle, then suddenly the car bucked as-if I had let off the gas, then quickly blipped it. It then started sputtering and spitting, running rough like it had a multiple misfire. There was no response to the gas pedal, and RPM stayed at about 2500, regardless of pedal position. I looked at the dash, and saw a wrench icon, and [See Manual] displayed, with no other info.

I pulled into a turn lane, put it into neutral, stopped, and shut the engine off. I had to press the start/stop button twice to get the engine to stop. When I restarted the engine, it took 10-12 rotations before it started. I actually thought it wasn't going to start. Afterward it seemed to run OK. It was maybe down a bit on power, but by the time I got home the power was coming back.

There are no check engine lights, and I doubt I'll find anything in the manual, as suggested. Any ideas?

Sponsored

 

[kodypiccirilli]

Had a similar issue with the auto trans, didnt really have a loss of power though. I had throttle response issues, cranking issue, and see manual "wrench" icon. Left the car off for ~20 minutes, then started back up and the light was off. Have not had this issue since. Not sure what the problem was though...

 

[boosted4life]

I guarantee it's a defective throttle body, been having issues with these for awhile.

 

[myjaja]

100% bad throttle body. Same happened to mine multiple times. Mine got stuck closed so I replaced it with a bbk throttle body and never had an issue since.

 

[ChitownStang]

I wonder if my throttle baby is going bad too? Since I got my ford performance stage 1 tune, when I'm rolling through the gears at about 5k rpm's in third car lost power and puttered for a second but this only happens in 3rd gear and not all the time, very weird... No idiot light either

 

[BE6Pony]

Had the same exact problem and I would either drive it out or stop and turn it off after 10 min and it fixed itself.. never thought about changing the TB all the things I thought but it makes sense. I thought mine was a bad connection at first with my soldered 02 sensors then I replaced them with stock and BBK extensions and still happens not as often but does at lower RPM

 

[x550ciLX]

Been to the dealer multiple times for this issue. Can confirm it was the throttle body.

 

[DeepImpactS550]

Thanks for the replies. What would it take to convince the dealer to replace the Throttle Body?

It's already going to the dealer tomorrow for THIS. I wonder if I can convince them to replace the TB at the same time.

 

[ranger56528]

Very interesting seeing the glass separate like that,back to throttle issue. I have yet to experience this issue so maybe its time to think about a BBK 73mm TB Hmmmmmmm.

 

[Mustang_Eh]

Happened to me. Brought to dealer, they read the codes and confirmed it was a bad throttle body.

 

[DeepImpactS550]

Happened to me. Brought to dealer, they read the codes and confirmed it was a bad throttle body.

Did you have an actual CEL on, or was it a hidden code?

 

[wildcatgoal]

If you had a wrench icon pop up, it'll be in there.

 

[DeepImpactS550]

Very interesting seeing the glass separate like that,back to throttle issue. I have yet to experience this issue so maybe its time to think about a BBK 73mm TB Hmmmmmmm.

Other than the obvious increase in reliability, I have read that a TB doesn't do much without supporting mods. Could I expect an SOTP power increase with one, having only axle-backs?

EDIT: looks like about 5hp and 8tq max gains, but about a 20lb. Ft peak over the curve, mostly at low/mid rpm, where these engines need it. Definitely a consideration.

 

[Mustang_Eh]

Did you have an actual CEL on, or was it a hidden code?

I'm not sure. That's what the service advisor told me when I picked up the car.

 

[Rocketboy]

How many miles have you guys have on your rides when the issue became present? I just hit 30,000 and no issues yet (knock on wood) with the stock TB.
Thanks

Sponsored