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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

Got Codes tonight!

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Old Sep 22, 2009 | 08:57 PM
  #1  
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Got Codes tonight!

Hi everyone, I finally got a chance to get the codes out of my 1991 F250 with a 5.0. Some of you may remember that I had a thread about it idling at 2500 rpms. Unplug the IAC and it idles down. Well I got a code 23 Throttle Position (TP) sensor out of Self-Test range and a code 31 EVP circuit below minimum voltage. I left the IAC plugged in and unplugged the TPS and it idled and ran good. I took it down the road and it was fine. I havent had a chance to actually check the readings to see if there just bad or if they are being told wrong info yet. What are your feelings on it? Have you seen this before?

Thanks, Jon
 
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Old Sep 22, 2009 | 09:46 PM
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Your TPS is bad.. replace it.
 
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Old Sep 22, 2009 | 09:55 PM
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Not to but in, but Raven finally threw a CEL, and when I had it pulled at Advanced AP, it was P1506. She wiped the CEL, I sprayed the TB and run fuel treatment, and so far, so good. A real long steady cruise, 160 miles, plus a 25 mile run at 5 mph, (traffic), runs good...
 
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Old Sep 23, 2009 | 03:54 AM
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Do what Conanski says.
 
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Old Sep 25, 2009 | 07:03 AM
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!

Originally Posted by Conanski
Your TPS is bad.. replace it.
Thanks Conanski! I put the TPS on last night, runs perfect! I really appreciate it. When I was driving it I noticed the RF brake was hanging so thats my next project.
 
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Old Sep 25, 2009 | 07:39 AM
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Glad you got it fixed. A good place to start with the brake might be to replace the rubber flexi pipe on that side.
 
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Old Sep 25, 2009 | 11:49 AM
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!

Originally Posted by Lazy K
Glad you got it fixed. A good place to start with the brake might be to replace the rubber flexi pipe on that side.
I'm pretty sure its just a stuck caliper. The truck sat for 2 years. Hit the brakes and it wont release. I'm sure I'll end up putting a caliper on it. I might just put both on them.
 
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