Question about 1996 Buick Roadmaster
I had one of them replaced about 4 years ago, but I can't remember which one. Can the average person tell which one is bad?
If one is bad you replace both
You have a 1996 bad or not their
over 14 years old so they get replaced
at that point,as they no longer are efficient
enough to process oxygen
You use the PO420 & PO430 codes you should
have as well as look at scan tool data,fuel trim,& back
probe & test the O2 Sensors.
If you hit them by hand when cold they may rattle
as the material inside is broken prosibly
Average person can not tell much,so no
Need experience & proper test equipment
Just replace both side & the front O2 sensors yourself
Posted on Jul 26, 2013
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Posted on Jan 02, 2017
A shotgun approach to repairs can really rack up the bills.
If your symptoms are loss of water and you have replaced the thermostat, you more than likely have an issue with steam. And that steam more than often comes from a bad head gasket. Most head gasket gasket failures seem to be confined to the water side initially, but let it go on bigger damage will occur.
You can buy a litmus test strip to dunk in the coolant. It will indicate if there are exhaust residuals in the water and thus a gasket failure.
However it may just be something simple, given that you have just about replaced everything:
have you given the radiator a good hosing inside and out?
is the radiator fan running when it should be?
Posted on Sep 07, 2008
thank you very much for the help i changed it out fine. it turned out not to be the problem but it needed changed out anyway. it turned out to be the fuel pump relay. thanks for the help
Posted on Nov 03, 2008
The Catalytic Converter is part of the muffler system, and can be found between the rear of the engine and before the muffler on the exhaust system.
Posted on Dec 12, 2008
Check the mass air flow sensor (clean both heated wires with carb cleaner and Q-tip). Remember...cleaning does not always work...sometimes they are actually bad. Also check map sensor. Check for vacuum leaks at all hoses and fittings. If engine rpm drops sufficiently, engine vacuum will drop which may have caused a/c malfunction (controls work with vacuum signal) so I wouldn't worry about that 'till the run problem is dealt with.
Posted on Jul 30, 2009
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