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On my 2002 Pontiac Bonneville I took the oil filler cap off and a couple drops of water came out of it, what could it be?

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First thing is to change the egr valve it is located in one of the valve covers on the top. What that does is to draw all vapor and fumes out of the engine on the top and that could be why you saw a couple water drops. Good luck. If that is not it then you could have a blown head gasket are intake gasket.

Posted on Nov 28, 2013

  • Morgan's Auto Repair
    Morgan's Auto Repair Nov 28, 2013

    That model probably has the 3.8L engine in it with the plastic intake, it is notoriously known for leaking around where the EGR goes into the intake. Sometimes the plastic intake will crack, GM has 2 cooling lines that run through right by the EGR in the intake. This is a major job, if you haven't never done it before I wouldn't suggest you trying it. As long as you have not run the engine hot yet, this is the most common problem. Some mechanics & shops may think you will have a blown head gasket, but these 3.8L engines are known for this problem! Make sure it's checked out properly. Hope this helps you.

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Posted on Jan 02, 2017

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SOURCE: Pontiac Bonneville(2000) oil pressure sending unit

The oil pressure sending unit is located behind the oil filter, Threaded into an aluminunm housing. It has wiring that plugs into the sending unit. The oil filter has to be removed and you will need a deep well socket and a 6 inch extension. Change the oil and the sending unit together.

Posted on Feb 02, 2009

  • 1 Answer

SOURCE: engine blowing oil from oil filler cap

I had the same problem. I changed the pcv valve and checked the hose. It still did the same thing. Then I checked the metal tubing that the hose connects to and found it was full of hardened gunk. I sprayed PB Blaster into the tube let it soak for awhile. Then took an old choke cable, put it on a drill and ran it into the tube like a drain snake. It took a while of doing this over and over but eventually got it cleared out. Now, no more oil all over the engine and hood compartment.  

Posted on Mar 21, 2009

  • 70 Answers

SOURCE: what should a 2002 Pontiac Bonneville oil pressure

at what? depending on engine temp and rpm, normal oil psi should read 30-40 psi at idle and at cruising speed of 1500 to 2000 rpm should read 60-70 psi. most bonnevilles from 1992 to the last year run of 2005 have the 3.8 liter V6 which was updated over the years.

Posted on Oct 14, 2009

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How do i repair low oil pressure after changing intake gasets


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I have a pontiac bonneville 2002 ssei and the oil guage was usually between 40-80 when running. Now it is dropping to like 30 when just idling, what could cause this?


A number of things could impact this, a dirty oil filter, different type or weight, of oil or quite simply wear within the engine or oil pump (or combination of both)
First I'd get a gauge under the hood and get a true pressure check on the oil, perhaps the sending unit is failing. If it reads fine be certain the filter is clean. If still nothing it is within the engine, you can try to use a heavier oil that may increase your oil pressure.

I hope thi may have assisted you,
Tom

Feb 18, 2011 | 2002 Pontiac Bonneville

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I bought a used GMC Yukon 2002 and took it in for an oil change. Now I want to add some oil but cant get the oil filler cap off


Sounds like somebody messed up putting the cap back, take it back to them and let them remove it!

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I had an emission test done on my 98 bonneville and it failed because code P0440 evap control system what should i do ?


Here's list why your car is coming up with this code. It could be any of these things causing it.
DTC detecting condition:
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  • EVAP control system does not operate properly.
Possible cause:
  • Incorrect fuel tank vacuum relief valve
  • Incorrect fuel filler cap used
  • Fuel filler cap remains open or fails to close.
  • Foreign matter caught in fuel filler cap.
  • Leak is in line between intake manifold and EVAP canister purge volume control solenoid valve.
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  • EVAP canister or fuel tank leaks
  • EVAP purge line (pipe and rubber tube) leaks
  • EVAP purge line rubber tube bent
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  • EVAP canister purge volume control solenoid valve and the circuit
  • Absolute pressure sensor
  • Fuel tank temperature sensor
  • O-ring of EVAP canister vent control valve is missing or damaged
  • Water separator
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Apr 01, 2010 | 1998 Pontiac Bonneville

1 Answer

What should a 2002 Pontiac Bonneville oil pressure gage read at


at what? depending on engine temp and rpm, normal oil psi should read 30-40 psi at idle and at cruising speed of 1500 to 2000 rpm should read 60-70 psi. most bonnevilles from 1992 to the last year run of 2005 have the 3.8 liter V6 which was updated over the years.

Oct 13, 2009 | 2002 Pontiac Bonneville

1 Answer

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Jul 07, 2009 | 2002 Pontiac Bonneville

1 Answer

White fumes in the engine oil filler cap


Sounds like you have blown the head gasket when it got overheated.. The white stuff in the oil cap is emusified oil, a bit like mayonnaise.
You will almost certainly need to replace head gasket and service the cylinder head.

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2 Answers

Pontiac Bonneville(2000) oil pressure sending unit


The oil pressure sending unit is located behind the oil filter, Threaded into an aluminunm housing. It has wiring that plugs into the sending unit. The oil filter has to be removed and you will need a deep well socket and a 6 inch extension. Change the oil and the sending unit together.

Jan 24, 2009 | 2000 Pontiac Bonneville

1 Answer

2000 Pontiac Bonneville...gas fumes = Feul leak?


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Jan 22, 2009 | 2000 Pontiac Bonneville

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