Ok, I'm probably totally blind but I haven't been able to find answers to these questions:

How do I tell if my QJet T/A is in closed loop?

What should the voltage reading on my O2 sensor be after warm and at idle?

My coolant temp sensor seems to be operating properly (voltage varies with temp) and my gauge moves when starting the engine but I get no temp reading. Is the gauge bad or is the gauge sender bad?

When should I change my diff fluid and what's the best fluid to use?

Thanks!


------------------
85 T/A 305 4bbl. totally stock...work in progress

 

If I remember right .4xx mv is about right at the O2, for a good A/F mix...

The sender for the guage is on the driver's side head between cyl. #'s 1 and 3.

That's the only thing that it does, work the guage, the Coolant temp sensor is what the ECM uses, it should be on your intake manifold.

Synthetic Differential fluid is best, get your specific weight and go to town. Mobil 1 makes a synthetic diff oil..

------------------
Shane McConnell
macgyver@thirdgen.org [*]Owner of a 1991 Camaro RS, 305 5-speed.[*]Owner of a 1979 Camaro Z28, 350/350.
(Reminder to self, change oil at 100,000 miles.)

[This message has been edited by Macgyver (edited August 01, 2000).]