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About autohelp
Expertise
On hands professional expertise in all aspects of Cadillac diagnostics and repair mid 1970`s thru 2000 year vehicles. GM certified in electronic fuel injection, Automatic transmission, Heating and A/C, and onboard vehicle computer diagnostics.

Experience
Held over 15 GM certifications prior to retirement in 1989.

Organizations
Prior to retirement held several ASE certifications, numerous Factory certifications.

You are here: Experts > Shopping > Vintage Cars > Cadillac Repair > emissions

Topic: Cadillac Repair

Expert: autohelp
Date: 7/11/2008
Subject: emissions

Question
my 90 cad deville displays e48 what does this code mean? also can you send me a diagram of the vacuum hose routing for this same car

Answer
E48 = AIR systems fault. You have a problem with the AIR MANAGEMENT SYSTEM.

You will need a vacuum schematic and picture locations of the components within the system that is causing you problems of which can't be done on this website which only allows one picture. I do not have a website so you will have to e-mail: onlineautohelp@msn.com in order to obtain the information.

Is this a california car ?.

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