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Old 08-16-2018, 08:59 PM   #2
fdryer
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Join Date: Jan 2006
Location: NYC
Posts: 41,455
 

2003 L-Series 3.0L Sedan
Default Re: Surge tank is problematic

Other than the possibility of finding poorly made aftermarket surge tanks and pressure caps, unless you can determine what the operating pressures are in your cooling system (overheating leading to higher pressures), guessing can be expensive. If you can, try borrowing a cooling system pressure tester from Autozone or Advance Auto (if they have one to borrow). Adapters for radiators, surge tanks and pressure caps complete these kits to test cooling systems and caps separately. A hand held sir pump pressurizes the cooling system or cap to factory specified pressures for the vehicle to find weaknesses in hoses, clamps, fittings, radiator, thermostat gaskets and heater cores. Pressure caps are tested for rated pressures.

System operating pressures for '01 SL1/SL2/SW are 15 psi.
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