ARRL has created or identified a number of Web pages that may help you. Start with RFI-Automotive: www.arrl.org/tis/info/rficar.html This is where you'll find the automotive RFI "home page."
Automotive Electric Motor and
Fuel Pump Noise:
www.arrl.org/tis/info/fuel.html . How to diagnose and cure noise from
fuel pumps and other electric motors. This includes a reprint of the information
in the Ford TSB on the subject.
Automotive Interference Problems: What the Manufacturers Say-- www.arrl.org/tis/info/carproblems.html This page gives the RFI policy statements of vehicle manufacturers.
Lab Notes--Mobile Installations and Electromagnetic Compatibility-- www.arrl.org/tis/info/pdf/39574.pdf Some general guidelines on various automotive RFI problems.
Engine
Noises--
www.arrl.org/tis/
. This
section is devoted to helping you diagnose engine and ambient noises.
HF Mobile's Home On the Web-- noise_and_how_to_kill_it.htm. General information on automotive noise.
Radio
Telephone / Mobile Radio Installation Guidelines--
radio_noise_GM.html . GMNA
Engineering Centers General Motors Corporation installation guidelines.
Note: Some of the following articles are in Adobe Portable Document Format (PDF) files. To view and print these files, you'll need a copy of Adobe's Acrobat Reader program. (Version 3.0 or later required). More information here.
Lab Notes -- Mobile
Installations and Electromagnetic Compatibility (32,768 bytes, PDF file)
QST March 1995, pp. 74-75