Question about 2003 Pontiac Bonneville
There is a leak coming from the intake manifold on the passenger side of the 3800, V6 Pontiac 2003 Bonneville engine. There is a black rubber covered tube that is has a 90 degree bend that goes from the intake manifold to a small pump??? that is in the serpentine belt configuration. It is leaking at the manifold only when the engine is ambient temperature. Stops when it is hot (operating temperature). It starts leaking 4-5 hrs. after the car is used. Dealer put on a new black plastic plenum that sits on top of this alunimun intake manifold. That had nothing to do with it!!! Now it is worse 3 days after he worked on it. I used Bar's Leak b4 I took it in. That stopped it from leaking over the engine to the floor. What is this black covered tube? and what needs to be replaced/fixed?? Thank you for your help!! Dave
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Posted on Jan 02, 2017
selecting replacement engines- check for 5yr-50000 warranty, not knowing location, two known- spokane, wa. sacramento, ca. there are mail order establishment that offer these, just make sure of warranty cover replacement labor fort total time warranty is in time, also make sure that, if a problem is not cured, they will supply replacement engine-labor. remember it is your dollars, you should be in control
Posted on Oct 05, 2008
1 Inspect Cooling System Mix Coolant level low or flow is restricted. 2 Inspect Belt Incorrectly routed, adjusted, tensioned, missing, or worn water pump belt(s). 3 Inspect Oil Pan Gasket - Performance Ruptured, cracked or leaking radiator hose. 4 Inspect Radiator Cap Worn or damaged radiator cap 5 Inspect Thermostat Thermostat stuck closed 6 Inspect Fan Blade Broken, missing, or defective fan blade(s). 8 Inspect Water Pump Damaged, worn or leaking water pump. 9 Inspect Intake Manifold Plenum - Perform Leaking water pump gasket. 10 Inspect Cooling Fan Control Faulty cooling fan control or circuit. 11 Inspect Cooling Fan Switch - Radiator Faulty radiator cooling fan switch or circuit. 12 Inspect Engine Temperature Sensor Faulty engine temperature sensor or circuit. 13 Inspect Temperature Switch Damaged or faulty temperature switch or temperature switch circuit. 14 Inspect Fan Clutch Worn, loose or faulty fan clutch. 15 Inspect Ported Vacuum Switch Damaged, leaking, or faulty ported vacuum switch. 16 Inspect Radiator Obstructed radiator core or radiator cooling fins. 17 Inspect Head Gasket - Performance Head gasket leaking coolant into cylinders
Posted on Dec 01, 2008
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