
03-05-2007, 10:22 AM
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Registered User
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Join Date: Aug 1999
Location: Florida / N.H.
Posts: 8,804
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Pump clutch circuit needs testing.
Criteria for pump:
10C-40C coolant temp
less than 3600rpm
02 sens-open loop
Max run time from start -110 secs.
First check would be fuse/power feed
Second would be ohms test at clutch magnet coil.
The top sov is AIR and the AIR sov gets the same electrical signal as the pump, so if you take the vac line off the sov [after sov, betwen sov and control valve] and you have vac, you know that you have electric sig from ECU to both sov and pump , as they are wired in parallel. Meaning the pump should run at the same time the sov is open. Or you coud just 12v test lamp either the pump or sov..
I do not undestand your meter readings at all.
Last edited by Arthur Dalton; 03-05-2007 at 12:00 PM.
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