Re: 77 280

Jun 30, 2003 Last reply: 21 years ago 2 Replies

Could also be vacuum.



Phil



gregs wrote:


Well its summer and I'm driving the Z. Frist off the battery died and I put in a new one. Then
>I found the terminals were sparking with nothing on as I connected the battery. Well it turned out
>to be the power amplifier. Have it disconnected now. Have to buy a new one. I'll probably
>troubleshoot it later.
>
>It runs awfull, backfiring. And the whistle. That whistle was really bugging me. Hitting
>the gas hard produces a whistling like something leaking. I finally found the source allmost. It
>under the car. Got to be the exaust !! ??
>
>So I now have to start troubleshooting the engine. I guess I should start with the standard things
>like plugs, wires, check for leaks or stuck items.
>
>What fun.
>
>greg
>
>
>

I'd expect a vacuum leak to whistle when you let up on the gas. A whistle when you step down sounds more like packrat nest in the tailpipe.

Turned out that whistle was nothing other than a leak at the converter flange. I put on a new gasket and tightned it up. There is nothing inside the orginal converter. I emptied it long ago. I did put in a straight pipe inside, which I later took out.

The backfiring was fixed by readjusting the air flow meter.

I still have that amp drawing too much current. I was going to put in another relay to turn off the power, but still undone.

greg

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