irratic behavior - Ford Powerstroke Diesel Forum
 
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post #1 of 7 Old 04-24-2009, 07:27 PM Thread Starter
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irratic behavior

what are the symptoms of a bad throttle positioning sensor
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post #2 of 7 Old 04-26-2009, 12:34 PM
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It should be throwing a SES light.

2002 F350 Crewcab Lariat 4X4 SRW

626 HP, soon to be 750+ HP on fuel only
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post #3 of 7 Old 04-26-2009, 12:56 PM
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I'm going to start off with the basics, even though @ this point it's probably unlikely, but have you had your Cam Position Module(CPM) replaced?

"HEAVY" 2001 F-250 XLT 4x4 EC SB:
TW 6pos chip, S&B CAI, Monster 4" exhaust w/ Power Elbow, Big Head WGA, Technicooler, ITP boost fooler, Gen 1 Wicked Wheel, Six-Gun Tuner, Optima Yellow Tops, AutoMeter(Boost, Trans, EGT), CCV mod, MTS TC, MTS valve body, Trans Tech performance rebuild kit, TransGo shift kit, Hornblasters 242 Shocker Train Horns.

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post #4 of 7 Old 04-29-2009, 10:56 AM
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The throttle position sensor will likely work correctly, or not work at all - as it is a resistor type device - like on track-cars.

Cam position sensor, is another good idea to check - or replace. The price varies widely from $20 - 200.

I ran an air filter too long - and it threw things off, as it got clogged.
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post #5 of 7 Old 04-29-2009, 12:08 PM
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Originally Posted by iijewelry@comcast.net View Post
The throttle position sensor will likely work correctly, or not work at all - as it is a resistor type device - like on track-cars.

Cam position sensor, is another good idea to check - or replace. The price varies widely from $20 - 200.

I ran an air filter too long - and it threw things off, as it got clogged.
$200 for a CPM?????? In all due respect, where have you seen a CPM that goes for $200, besides dfuser.com's IH Blue for $135? The IH grey & Ford grey are the same, but IH's is usually cheaper. The most I've seen for one from Ford dealerships in other states is $35.

"HEAVY" 2001 F-250 XLT 4x4 EC SB:
TW 6pos chip, S&B CAI, Monster 4" exhaust w/ Power Elbow, Big Head WGA, Technicooler, ITP boost fooler, Gen 1 Wicked Wheel, Six-Gun Tuner, Optima Yellow Tops, AutoMeter(Boost, Trans, EGT), CCV mod, MTS TC, MTS valve body, Trans Tech performance rebuild kit, TransGo shift kit, Hornblasters 242 Shocker Train Horns.

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post #6 of 7 Old 04-29-2009, 01:24 PM
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So I overdid-it a little, but the damn sensor was $186 - here in Santa Fe, NM - when I asked.

Taxes and all - that's $200.

One year later they charge $30-some for the same part.

They may slap us extra for 'high altitude' here, what do I know.
I asked about the reduction in price, and they told me 'Ford had gotten a new vendor'


They wanted about the same for a fuel pressure sensor, which I stupidly bought, just to find - it wasn't my problem.

I don't buy parts much from my local dealer anymore.
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post #7 of 7 Old 04-29-2009, 02:04 PM
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Quote:
Originally Posted by iijewelry@comcast.net View Post
So I overdid-it a little, but the damn sensor was $186 - here in Santa Fe, NM - when I asked.

Taxes and all - that's $200.

One year later they charge $30-some for the same part.

They may slap us extra for 'high altitude' here, what do I know.
I asked about the reduction in price, and they told me 'Ford had gotten a new vendor'


They wanted about the same for a fuel pressure sensor, which I stupidly bought, just to find - it wasn't my problem.

I don't buy parts much from my local dealer anymore.
Sorry to hear that, man. Sounds like your Ford parts dealer is trying to make a buck or 2, eh? Ford & IH have been outsourcing most of their parts to a factory in Mexico for sometime(henst the big recall on the CPMs from a faulty diode that saved 'em a buck). Try autopartswarehouse.com if you need Powerstroke OE parts. You might have to wait a couple of days for delivery, but it sure beats Ford dealer's trying to suck the blood out of you. By the way, welcome to the .org if no one else has said it to ya!

"HEAVY" 2001 F-250 XLT 4x4 EC SB:
TW 6pos chip, S&B CAI, Monster 4" exhaust w/ Power Elbow, Big Head WGA, Technicooler, ITP boost fooler, Gen 1 Wicked Wheel, Six-Gun Tuner, Optima Yellow Tops, AutoMeter(Boost, Trans, EGT), CCV mod, MTS TC, MTS valve body, Trans Tech performance rebuild kit, TransGo shift kit, Hornblasters 242 Shocker Train Horns.

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