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Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
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July 18th, 2019, 08:55 AM
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Join Date: Jul 2012
Location: Joplin MO
Posts: 1,138
Likes : 2
Liked 112 Times in 108 Posts
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If the truck starts with the old one, that tells you that the new one is defective.
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2003 F-150 XL RCSB 2wd 4.2 5 speed 3.55 LS
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July 27th, 2019, 12:25 PM
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Join Date: Nov 2018
Posts: 12
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Update
Put the old one back in and it fired right up. Returned the bad one and they sent a replacement. Put the replacement in and it fired right up. The transmission is shifting smoothly and is working now. The only fault code I have now is 173 HEGO (HO2S) sensor fault/rich. What can cause this fault?
Thx for all of your help with this.
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92 F150 XLT 2WD 5.0 302 E4OD long bed
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August 3rd, 2019, 10:29 AM
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Join Date: Nov 2018
Posts: 12
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Code 173 and 334
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Still have codes 173 and 334. Performance is sluggish. Any ideas what to look for?
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92 F150 XLT 2WD 5.0 302 E4OD long bed
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August 3rd, 2019, 11:27 AM
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Join Date: Jul 2012
Location: Joplin MO
Posts: 1,138
Likes : 2
Liked 112 Times in 108 Posts
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The 334 is EVP sensor - that's EGR valve position sensor. The EGR system needs to be troubleshot. The 173 might be a bad O2 sensor, but it's more likely it's running excessively rich due to too much fuel or restricted air. I'd go get the cat tested for excessive backpressure.
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2003 F-150 XL RCSB 2wd 4.2 5 speed 3.55 LS
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