F250 7.3 throttle position sensor, codes P1531, P1705, PO476, PO282 - Ford Powerstroke Diesel Forum
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Old 11-04-2013, 06:23 PM
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F250 7.3 throttle position sensor, codes P1531, P1705, PO476, PO282

I can’t find a throttle position sensor for my 1995 7.3 liter, even from Ford. The part that NAPA provided as ‘the part’ didn’t have the right plugs, & the part numbers didn’t match. Maybe it isn't a throttle position sensor? If someone could look at the pictures below & let me know if they even recognize the proper name of this part, it is on the floor wall that is directly behind the throttle pedal & is bolted with 2 screws (pics are supposed to attach properly below). I was wondering if anyone is more able to locate this part then I, & can let me know where it’s found. I tried to attach some pictures of both plug ends & the data on the part (because I can’t figure out which set of data is the actual ‘necessary’ part number), the pictures should show at the bottom here & here is all the part data on the part in the same order they’re on the part:

FORD
PBT G3D
CTS
F57F 9F832
BA 5C27B

Also, my truck is acting up something serious right now that manifests by completely dying when you go into any lower acceleration-it starts a couple times before completely not starting anymore. In one week of this month it stranded me a couple days in Thermopolis, WY, then overnight in Moses Lake, WA. These are far away locations that are not ideal to be stuck in, it was a mess. It seems to try to run at higher acceleration before it dies completely unable to start-stays down a couple days, then suddenly will out of no where will just start working again. The truck is not stable for safe travel & fortunately it started acting up with a diagnostic tool near. Here’s the codes it is giving, in addition to that it reads 0.78v at the pedal but there is no pressing on the pedal happening. Codes:

P1531 ACC PEDAL MOVEMENT
P1705
PO476 EXHAUST PRESSURE CONTROL VALVE PERFORM
PO282 #8 INJECTOR CIRCUIT LOW (does this mean an injector is out or the UCVH?)

W/KOEO OBSERVE EBP PID
COMPARE PID READING W/DMM

Can anyone tell me in easier terms anything that can help me understand what this all may mean? I’m trying to resolve this to get the truck in a happier place again so it can be used for trips again. It seems to be so complicated right now it’s hard to know what to do, where to start, & that it isn’t an expensive hit-and-miss experience again. So far replaced:

Cam position sensor (IS a FORD part), ICP sensor, Glow Plug Relay, 6 injectors (not since a year ago though & do not know if #8 was one of them). Here is some picture attempts of the throttle position sensor part, maybe that isn't the right name for it?
-img_1311.jpg

-img_1349.jpg

-img_1337.jpg

Last edited by nightofstars; 11-04-2013 at 06:32 PM. Reason: listed wrong number of injectors replaced & cleared up symptom better.
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Old 11-05-2013, 05:41 PM
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The TPS (Ford might call it the Accelerator Pedal Position Sensor) for the OBS trucks that is available in the aftermarket is the Dorman 699-200. If you want factory, you have to buy the entire pedal assembly (F6TZ-9F836-AA). Cheers!
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