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Old 01-02-2013, 10:26 AM   #1 (permalink)
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Default P0340 code keeps returning

Hey all,

Long time reader, first time poster here. 2002 Taurus with the Vulcan engine. I have replaced the CPS, complete sensor/synchro assembly twice in the past year due to P0340 codes, and now it's back again. Son's car; he says it occasionally runs rough, has stalled once or twice, and the engine revs on its own. Anyone have this issue? I can't figure out why it keeps coming back. I'm sure I installed it correctly, otherwise it wouldn't run fine for six months. I've rebuilt multiple engines in my years and if I can remove and install a distributor correctly, then I figure I can do the same with the CPS, especially with the alignment tool. Lifetime warranty on the part so no $$ put out but it's a pain in the butt. Any ideas? Thanks in advance!
Andy
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Old 01-02-2013, 11:13 AM   #2 (permalink)
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What brand replacement did you use? Hopefully Motorcraft. Parts store brands are horrible. Not uncommon to see them bad out of the box.
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Old 01-02-2013, 11:27 AM   #3 (permalink)
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I'm going to have to pull the receipt when I get home to be sure, but as a rule I only buy good name brand parts-Standard Ignition, Moog, Monroe, etc. You get what you pay for. I got these from NAPA, and they do have the lifetime warranty but I know that doesn't necessarily mean good quality. I remember originally considering the Dorman unit since I've had good luck with their parts but then I read a whole bunch of bad reviews on their CPS, so I know it's not a Dorman.
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Old 01-02-2013, 12:01 PM   #4 (permalink)
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Andy, if it's a Balkamp from Napa, it's a Dorman.
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Old 01-02-2013, 12:31 PM   #5 (permalink)
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Now that you mentioned Balkamp, I'm pretty sure that's what I bought. Same as the Dorman, huh? That would explain a few things. Maybe I'll see if NAPA will credit me toward a Motorcraft and replace this PITA one more time.
Thanks for that info!
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