[MR2] radio question, mk2t

[John E. Perry]

> ----- Original Message ---- From: Chris S To: mr2 at mr2.com Sent:
> Friday, November 16, 2007 2:08:39 AM Subject: [MR2] radio question,
> mk2t
> 
> Ok, this is a strange one.  I have stock toyota 5mm wires (3rd gen
> engine using 93+plugwires), NGK bkr6e plugs (stock heat range,
> copper, resistor).  I have used this setup for the last year and a
> similar stock setup with th eoriginal 3sgte.
> 
> I say this bc i have discovered an odd problem.  My radio has
> developed a 'ticking' sound that is RPM dependent.  I don't know
> what's changed on my car to suddenly cause this, but it is very
> annoying.  The engine is a relatively stock 3rd gen, the radio is a
> stock 91 premium system (7 speaker cd/tape), and the issue just
> developed recently.  the car runs smoothly, no issues with gas
> mileage/driving, etc, but there is just this noisy ticking sound in
> the radio.  It is most noticeable on the weaker stations, still
> noticeable on the strong ones, and not noticeable at all when playing
> a cd.
> 
> any tips? chris
> 

How long has it been since you checked out the spark plug wires?  You
say it varies with the engine speed, and it's ticking.  If the radio's
interference rejection has died, everything around would be intruding.
It seems to me that rules out a radio problem.

If all the plugs were getting into the radio, there would be a buzz that
varied with the engine speed, but one wire arcing to something that runs
by the antenna wire would tick (at 1/8 RPM, right?).  Try replacing the
plug wires.

John Perry