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Old     (ponyh8r)      Join Date: Dec 2004       06-03-2010, 2:11 PM Reply   
I have an 06 Xstar that has been idling funny. It will idle at like 1500 RPMs and when i shift it into gear it will drop down to like 500. I live 4 hours from the nearest dealership. I spoke to two folks who thought it might be a throttle position sensor. Does anyone know if i can get this part at autozone or somewhere like that. It is an 06 Xstar with an MCX engine. I would really appreciate it.
Old     (malibumatt)      Join Date: May 2006       06-03-2010, 4:11 PM Reply   
On my Malibu the throttle position sensor had to be calibrated to the ECM once installed. So even if you did get the part you still need to sync them. Example being it reads throttle position from 1-100 and it may come out of the box set at maybe 50 which would be half throttle. It has to be set to your idle speed. Somebody can correct me if I am wrong but that is the way I understood it.
Old     (RidingTheNW)      Join Date: Apr 2010       06-03-2010, 4:58 PM Reply   
What liter engine do you have? Most likely its going to be the same as the ones off a truck. Your engine is a GM block so most of the parts like the sensors that they use on them are the same. I would take the sensor off, go to the auto parts store and try to see if it matches up.
Old     (imscarlet)      Join Date: Mar 2008       06-03-2010, 5:48 PM Reply   
Its a drive by wire system so will need to diag it with a reader before doing anything but will most likely be the sensor on the throttle handle
Old     (acurtis_ttu)      Join Date: May 2004       06-04-2010, 6:59 AM Reply   
u can order them thru ski-dim. I haev done that in the past.

search online and with a simple volt meter you can test and see if your TPS is bad.

On my 04 supra, I just plugged in the new TPS, didnt' calibrate anything. boat ran fine afterwards. maybe I gto lucky???
Old     (tonyv420)      Join Date: Jul 2007       06-04-2010, 9:50 AM Reply   
replaced mine because it was doing the same thing, can't remember how much the part was, but total bill from the shop was 225.00
Old     (lionel)      Join Date: Nov 2005       06-04-2010, 2:16 PM Reply   
Neighbor at the lake had the same problem last year. 2006 X-15. Turned out to be a bad ground somewhere. IIRC The gauges had a bad ground. Good luck.......
Old     (lionel)      Join Date: Nov 2005       06-04-2010, 2:17 PM Reply   
Might be worth checking the grounding bar behind your dash, as well as the grounds on your battery......


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