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Old 11-21-2022, 03:34 AM   #1
Lt. JG
 
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Default 7.4 MPI, changed circulating pump and now getting alarm

Hello, just hoping someone may have run into this glitch before.
Changed out the water circulating pump, but now I am getting an alarm as if overheat or low oil pressure?
Temp is steady 175, changed oil and filter and a healthy 80 there.

My only thought is I disconnected the oil line by the belt tensioner bracket to access the pump bolts, maybe that disturbed something or I lost an o ring or something on reassembly ?
Thanks for any ideas what to check
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Old 11-21-2022, 04:09 PM   #2
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You can use an IR temp gun to verify engine temperatures. I would have the ECM scanned by a mechanic to read out fault codes otherwise you would just be guessing.
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Old 11-21-2022, 04:55 PM   #3
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Yep, that's the plan next. I was thinking I knocked something loose, as the only other time I had alarm issues it was loose wire to oil pressure unit-thanks!
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Old 05-12-2023, 08:51 PM   #4
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Default why did you change the pump?

Isn't extremely rare for these pumps to need changing? I'm having temp creep at cruise on my 5.7 merc, I have worked on everything except that pump!
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