Limp Mode Issue

[tact_out]

Right now my car is having an issue. We checked the throttle body and tested the alternator. Every thing shows good.

The problem is that when my car decelerates and turns mostly right it goes into Safe Mode. It did happen again when I dropped it down to 4th from 5th and took off. You can feel it cutting out a little bit around turns as well.

 

[blackstallion06]

Jayson, did you talk to Steve about it? I called him yesterday. Mine is doing the same thing. It has to be my Throttle Body though cause car never did it before install. I think its probaly something to do with that pretension i drive by wire sytem on Throttle body. I am not sure though. If i stopm on mine alot it will go into that safe mode. I have to shut it off a min then turn it back on.. I hope Steve figures it out. I am bringing mine up there to get some other stuff installed and he said he fix mine then. Told me he was having same problem with another car so that must be yours he is talking about.
phill

 

[tact_out]

yeah its mine... looks like your going to have the luck of the draw cause he will figure out mine lol then yours will be easy. but i have been calling every one and they say its in the Tune. I aslo read that some one had the same issue and it was because their throttle body closes to fast. I have also heard that the problem is in the SCT as well. Some one hooked theirs up to a diablo from SCT and didnt have the problem after that... well find out soon hopfully tonight

 

[imported_wickedstangs]

what error codes are you getting when it goes into safe mode? or is it Failsafe Mode?

 

[tact_out]

the only errors the car has is about it being too rich but that is with the tune and i wouldnt think that car would go into limp mode off of being rich

 

[imported_wickedstangs]

How do you know your are in Limp Mode is the car display telling you? I am in the chat room will be there for the next 30 min if you have questions

 

[tact_out]

yes it goes into fail safe mode and pretty much gives you no throttle response and it says it were it shows your millage in bold letters

 

[imported_wickedstangs]

yes it goes into fail safe mode and pretty much gives you no throttle response and it says it were it shows your millage in bold letters

What tune are you using the SCT or Predator? Check Your MAF (Mass Air Flow Sensor) is it hook up properly?

Chuckles
"Fail Safe Mode usually means the computer did not like something that was going on in the engine. Sometimes it's the tuning, sometimes it's the new mod that has been put on, sometimes they just do it. Check and see if you have any trouble codes stored in the computer.. and recheck all your connections to the the intake, throttle body, etc..."

 

[blackstallion06]

Diablo is fine Jayson. I was going to go with SCT just so steve could beat a few extra horses out but I am moving to San Diego soon and I am sure Emilio knows some shops down there that cant to a predater toon set up with my diablo. 
 Emilio I think my car doesnt like my new throttle body That was installed. Its a BBK. Still having problems with this thing. Its the worst mod I have gotten. I should have got a driveshaft or soemthing. As long as I dont stomp on it drives fine. If I down shift coming to a light my rpm will stay high after pushing in clutch. I am trying to get a hold of Prestigue and see if they will sell me a factory throttle body to put back on my car.. Suckes now i got tires to hook up with and I cant mash on it cause it shuts down on me.

I found another guy was having the same problem and he found this. From installing his TB.. Make sure yours is not coming apart..

 

[DEVILSPAWN1469]

Jaysons car (tact out) we have narrowed it down to 2 possible things. The Air flow sensor is bad cause it got covered in oil when the motor went BOOM, or the computer went bad. Hopefully just the sensor.

 

[imported_wickedstangs]

Blackstallion I found another guy having problem with his BBK TB and he had to rewound the inner spring and re-install the TB and everything worked great.. You might have to try that...

 

[imported_wickedstangs]

Emilio I think my car doesnt like my new throttle body That was installed. Its a BBK. Still having problems with this thing.

Man, I talked to alot of friends about this and they all say its the TB might want to put the stock one back on...

 

[blackstallion06]

I may but then again before i do that i am going to call Diablo and BBk in morning. These cars are so sensitive..I did go to a bigger T.B. over stock. i was thinking it maybe that i just need to either have my Tuner have a new tune installed or that Diablo maybe can walk me through adjusting some numbers. Air/Fuel ect.. Either BBK or Diablo should be able to tell me something or give me and idea how to fix my problem. I am going that route first so i can make use out of part.

 

[imported_wickedstangs]

I just found out that Ford has a TSB - Technical Service Bulletin out on your year mustang. There is a new TPS Sensor out and they are going to reflash your computer. Have you guys taken in your car to get a new one? Some guys are skipping the tune and just replaceing the TPS.

 

[blackstallion06]

I am going to call the dealer that I bought my car from tommorow morning and ask them about it..when i had issues last time the dealer here in town was sopposed to replace that but..

 

[blackstallion06]

Hey I got some more news on this subject other than dont buy a BBK throttle body.

BBK 1763 2005+ Mustang GT Throttle Body Troubleshooting Guide

If you are having issues with your BBK 1763 '05+ throttle body causing a FAILSAFE mode or CHECK ENGINE light, try the following procedure-

First be sure that the plastic capped spring is hooked into the gear and rotated approx 180° COUNTER-CLOCKWISE until it pops into locked position.

If that is verified and correct and you are still having issues then follow the directions for checking TPS voltage.

CHECKING TPS VOLTAGE

To check the TPS voltage you must have a DIGITAL voltmeter.

1. Re-assemble and install the stock throttle body.

2. LEAVE THE THROTTLE BODY MOTOR UNPLUGGED (the small connector on the driver side of the throttle body).

3. Ground the black wire of your meter and poke the probe of the red wire on the meter into the YELLOW wire of the TPS sensor which is the bottom wire on the plug located on the passenger side of the throttle body. You DO NOT need to break the wire to read voltage. The best way to probe the yellow wire is to poke the probe into the plastic harness plug (while itÂ’s plugged in to the TPS). You will need to penetrate the blue insulator the goes around the end of the yellow wire (hidden inside the harness plug) to reach the bare metal end of the yellow wire. Touch the probe to the bare metal end of the yellow wire

4. Turn the ignition to the ON position but do not start the car.

5. Read the meter display. You should see a voltage reading between 1.19-1.31 volts. Write the voltage down.

6. Now re-install the BBK throttle body and repeat steps 2-5.

7. If the TPS voltage on the BBK throttle body varies from the stock TPS voltage then follow the next steps to adjust the BBK to stock settings. This is easily done with the throttle body bolted to the car.

ADJUSTING TPS VOLTAGE

1. Remove the motor housing from the throttle body and loosen the tiny Allen headed set screw that locks the brass plunger into place.

2. Hook the plastic capped spring back into the gear and mount the motor housing cover onto the throttle body with a few of the screws to hold it in place.

3. Rotate the plastic capped spring approx 180° COUNTER-CLOCKWISE until it pops into locked position.

4. Using a pair of pliers or Vise Grips while watching the meter, turn the brass plunger clockwise to increase voltage or counter clockwise to decrease voltage until the meter displays the same voltage reading you noted from the stock throttle body.

5. Once the correct voltage is achieved and verified, you may remove the motor housing cover and tighten the set screw back into place then re-assemble the BBK throttle body for driving operation.

6. Plug the throttle body motor in.

7. Turn the ignition key to the ON position, then to the OFF position 4 times to allow the car to check the throttle body for proper operation.

If the throttle body is correct then the CHECK ENGINE and FAILSAFE warnings should be gone when you turn the key on for the 4th time


If for some reason this does not work for you please e mail BBK Tech Support for further assistance tech@bbkperformance.com

 

[tact_out]

Turns out to be a bad computer car is running good Dyno'd at 530 and were still going up...

 

[imported_wickedstangs]

very nice looks like I am going to buy the crank pulley now..lol

 

[DEVILSPAWN1469]

Turns out to be a bad computer car is running good Dyno'd at 530 and were still going up...

Glad yours is running good, cause mine is running like shit. My check engine light came on again after only 8 miles this time. Its going into Steves 2morow. Think the fuel filter went bad. Its running lean in both Banks. Codes P0171 and P0174.

 

[blackstallion06]

So it was the computer? did warenty cover that... Mine was the T.B. You cant get int ouch with BBK they dont answer calls or you get voice message. Talked to Diablo about adjusting air fuel ect they said its ok its the BBk they are junk. I guess car is used to it now though seems to be running fine.