Rc_manche Posted June 30, 2021 Share Posted June 30, 2021 Hey everyone, I have a 1989 carbureted Comanche just ordered a new tank but can’t find a replacement sending unit. Would appreciate the help Link to comment Share on other sites More sharing options...
eaglescout526 Posted June 30, 2021 Share Posted June 30, 2021 Carb?! 89?! That doesnt make sense. You should have either the 4.0L MPFI Renix system or the 2.5L TBI Renix system. 86's only had the 2.8L that has a 2 barrel Rochester carb and a 2.5L TBI Renix. Link to comment Share on other sites More sharing options...
scaleless Posted June 30, 2021 Share Posted June 30, 2021 Well... It's possible it was swapped to something. Send pics. If you meant 1986 and it has the 2.8L then you want an MTS JPSU-5 http://mtscompany.com/sendingunits.htm Link to comment Share on other sites More sharing options...
Rc_manche Posted June 30, 2021 Author Share Posted June 30, 2021 now I could be mistaken! The motor is (2.5)original has 157,000 on in. So I need to be looking up the renix system? Link to comment Share on other sites More sharing options...
eaglescout526 Posted June 30, 2021 Share Posted June 30, 2021 So the 2.5L from 86-90 is Throttle Body Injection. Which is a step up from being carbed. I do have some OEM sending units. MTS also makes new ones. You just need the right one for your tank size. 18 and 23 gallon tanks share the same sending unit. 16 gallon is a special one. Link to comment Share on other sites More sharing options...
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