My car recently started hesitating while driving at a constant speed. Eventually I had my first "Limp Mode" experience and it has happened several times since. I have done some research and have learned that there can be a couple things that cause this problem. 1.) TPS 2.)APP Sensor. Is there a way to determine which is causing the problem? I don't have the proper tools to check volts, etc., so i am hoping that there is a way to determine which sensor is creating the problem. Also, if it is the TPS I read something about replacing the whole replacing the whole throttle body. Is this true? Seems to be a common problem so i am hoping someone can help.......

I am also experiencing some other issues: (PLEASE LMK IF ANYONE HAS ISSUES WITH THESES)... Also, where is a good place to purchase these parts (best bang for the $$) Located in Cincinnati Ohio..

-HFL - drains my battery so i disconnected it.
-Alternator - makes a whining noise while driving and at idle
-Cruise Control Switch - I press it and the dash indicator light comes on saying its engaged. As soon as i let go of the button it turns off.

**I will also be replacing rotors, pads and shocks in the near future.

 

To validate the APP sensor, test using cruise control. If that resolves your issue, replace the APP sensor. I see you have issues with your cruise...so this may not be an easy test method.

HFL - Yep, disconnect, done.
Alternator - Sounds like it is failing and needs to be replaced.
Cruise - No idea.

Where to buy? There are a handful of dealers on here that sell OEM parts...and always rock auto if you ware interested in aftermarket.

 

Thanks for the response! I tried the cruise control (had to hold the on/off button in) and car didn't surge! So i'm assuming its the APP Sensor. Should i buy the sensor only or buy the whole assembly? I saw that there are just 2 screws holding the sensor to the assembly... Thoughts/suggestions please...

I also have the "tighten fuel cap" but have read that it can be fixed with EVAP Purge replacement. Great forum and nice people! Glad to be a part of this!

 

Sensor vs Assembly? That is a cost vs hassle decision you have to make for yourself. I am pretty sure I just bought the sensor when I did mine. It should take you less than 20 minutes to replace the sensor. I spent more time looking for my socket set than I did replacing the sensor.

Fuel Cap....I have had that pop up twice in the past few years and have lucked out just tightening the cap up a few times makes it go away. I have not had to replace the valve yet.