Quote:
Originally Posted by pantera1683
I don't think the vacuum leak is the source of the stumbling either. The secondaries are working fine. I did clean the IAC as it was kind of "sooty" and the idle went back to normal.
I need to get a scanner any recommendations on which one to get and where to get one?
Also, what's the best way to check the TPS?
Thanks
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There are several scanners out there; AutoXray, Snap-On, Craftsman, are readily available. Sometimes you'll see a Tech-I (perhaps the most comprehensive scanner) pop up on Ebay. Mine happens to be an AutoXray; the only one I'm familiar with (haven't felt the need for anything "better" or different). I paid around $125 for it and $75 more for the computer software that allow me to graph the results (as opposed to reading the raw data points). Some scanners now come with graphing capability on the scanner itself - which I would opt for if buying another scanner.
But, in the end, I can't remember how many little quirks I've been able to detect that would otherwise frustrate the snot outta me. My first Vette was a 95 LT1 car that would intermittently run crappy. The shop had it and drove it for a week with
"no problem found". Harrumph...
I bought the AutoXray, hooked it up and took the car for a drive with the scanner in data logging mode. Soon as I hit about 3000 rpm, the right side O2 would short and go to zero volts, indicating super lean. The ECM would react by doubling the injector dwell time, resulting in flooding the right side of the engine (hence the black smoke from one side of the engine). I changed the O2s, and that was that; just the first of several little glitches since on that car and on the Z as well that the scanner has been able to immediately point out. Well worth every penny, dem scanners are!
P.