Serial# FJX00221
Good morning Ladies and Gents,
Machine has had this issue for a couple months. Operator would complain that it would start beeping and saying shut down engine safely and de-rate. Shut off and restart and it would be fine the rest of the day. Each time i went out i could not replicate and there were no logged codes. Issue became more and more frequent to the point we are now. Typically when you start it and let it idle to warm up it will throw the error and de-rate. Turn it off and right back on and throttle all the way up and it runs fine no issues. While its beeping it throws active event 1239-1.
Unit was on its way to another job literally passing cat so i had the driver stop by and have them hook up to it and see what they said. They told me it needed injectors. Adamant that is the common problem with these engines. Fair enough. Ordered and replaced the next day as well as the fuel filters. Same problem. removed all the lines and blew everything out to verify no blockages. Checked the filter head and fittings. Nothing. Replaced the low pressure fuel pump to rule out. No change. Fuel seems clean.No contamination to note.
Fuel rail pressure seems to be reading normal although i do not know what the ratings are supposed to be at with what throttle position. Full throttle its showing 14,700-15,230 PSI Idles around 6,200 PSI.
Talked to Cat again and they seemed stumped and said that i may need a new fuel rail since the pressure sensor is not serviceable and is apart of the rail. And a new high pressure pump. Im not into throwing parts at it playing a guessing game. Ive seen other posts on here regarding this code and it seemed they had blockages or contamination. Nothing like my issue.
Impart your wisdom on me!
Good morning Ladies and Gents,
Machine has had this issue for a couple months. Operator would complain that it would start beeping and saying shut down engine safely and de-rate. Shut off and restart and it would be fine the rest of the day. Each time i went out i could not replicate and there were no logged codes. Issue became more and more frequent to the point we are now. Typically when you start it and let it idle to warm up it will throw the error and de-rate. Turn it off and right back on and throttle all the way up and it runs fine no issues. While its beeping it throws active event 1239-1.
Unit was on its way to another job literally passing cat so i had the driver stop by and have them hook up to it and see what they said. They told me it needed injectors. Adamant that is the common problem with these engines. Fair enough. Ordered and replaced the next day as well as the fuel filters. Same problem. removed all the lines and blew everything out to verify no blockages. Checked the filter head and fittings. Nothing. Replaced the low pressure fuel pump to rule out. No change. Fuel seems clean.No contamination to note.
Fuel rail pressure seems to be reading normal although i do not know what the ratings are supposed to be at with what throttle position. Full throttle its showing 14,700-15,230 PSI Idles around 6,200 PSI.
Talked to Cat again and they seemed stumped and said that i may need a new fuel rail since the pressure sensor is not serviceable and is apart of the rail. And a new high pressure pump. Im not into throwing parts at it playing a guessing game. Ive seen other posts on here regarding this code and it seemed they had blockages or contamination. Nothing like my issue.
Impart your wisdom on me!
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