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My 7.3 Diesel
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(01-05-2023, 02:51 PM)Bduck Wrote: Next, I put the DTC code reader on finding I had 3 codes. The first one was a "water in fuel" code which I had a spare filter draining & replacing filter. Also, found my "water in fuel" light wasn't working-possible bad bulb and need to go into dash researching, its suppose too briefly illuminate whenever ignition is turned on, out of site out mind. Next codes were exhaust back pressure sensor and exhaust back pressure high output sensor. The exhaust back press sensor is located at the front of the engine and the high output is in the exhaust pipe below the turbo. After gathering information, the exhaust back press sensor could be clogged causing other sensor to trip a code. Also, this sensor causes other issues such as excessive black smoke, fuel mileage dropped off from 18mpg to 12mpg, and hard shifting with the transmission. These symptoms I have with my motor but never realized something was going on as the truck ran well, if it hadn't been for alternator going down in my opinion. Not once did I get a check engine light. After changing sensor & line, both DTC codes cleared. I'm awaiting opportunity to do a good mileage check; excessive black smoke is now cleared up some but always had a little in the past when it was running right. Not sure yet with transmission shifting issue either at this time.
Where on the dash is the water in fuel light. I have a 99 and it may not even have it. Could a person easily remove the hose from the easiest end and look to see if it is plugged? Just reading the codes is probably the thing to do, since it's never had that done. Thanks for the info!!
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Messages In This Thread
My 7.3 Diesel - by Bduck - 01-05-2023, 02:51 PM
RE: My 7.3 Diesel - by Fowl-Hook - 01-05-2023, 04:51 PM
RE: My 7.3 Diesel - by Bduck - 01-05-2023, 10:45 PM
RE: My 7.3 Diesel - by Bduck - 01-16-2023, 04:01 PM
RE: My 7.3 Diesel - by wiperhunter2 - 01-16-2023, 06:21 PM
RE: My 7.3 Diesel - by Bduck - 01-16-2023, 07:08 PM
RE: My 7.3 Diesel - by Bduck - 01-20-2023, 03:02 PM
RE: My 7.3 Diesel - by wiperhunter2 - 01-20-2023, 03:33 PM
RE: My 7.3 Diesel - by Bduck - 01-21-2023, 01:07 AM
RE: My 7.3 Diesel - by wiperhunter2 - 01-21-2023, 02:16 PM
RE: My 7.3 Diesel - by Bduck - 01-22-2023, 03:04 PM
RE: My 7.3 Diesel - by wiperhunter2 - 01-22-2023, 08:04 PM
RE: My 7.3 Diesel - by Bduck - 01-23-2023, 04:25 PM

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