Recent content by SilverFoxDan

Thanks for the details and the pictures! I actually ordered a new switch, 11 bucks and change on eBay, as a future spare and will take a hard look at my original switch before I change it. Holly crap these switches have a lot of spring/snap pressure. It's a prehistoric, bruit force design...

Hi and thanks for the question. Looks like GM decided to use the term "Secondary" meaning an alternate source of O2, Engine being the first and attached air pumps as the second. According to Chilton's 84-96 Corvette repair manual, your belt driven type is also a "secondary" air pump. My...

While looking at the wire/firewall issue, I checked my headlight switch setup from the lever to the switch. There are a few variables in this setup including; the switch/mounting, the metal actuation rod and the cruise/headlight beam control lever. By the way, the switch bracket normally holds...

Update on the wire access issue: Dropped the Drivers Side (DS) bolster and I have to compliment the GM engineers in sealing up the wire access area really, really well. Fact is, on the '93 convertible, they installed a giant firewall electrical connector plug totally over the access hole. I...

Short answer is: To get oxygen to the catalytic converters so they can balance their chemical reactions and turn very bad stuff into not so bad stuff. Really amazing devices. Longer answer is: The pump is controlled by the ECM which supplies a ground to the pump relay (pin F). This relay is...

Applies to 1992-93 C4's 5.7L Vin 8 that have electric Secondary Air Pimps Part of the restoration of my '93 included pulling the secondary air pump (in the compartment below the left headlight). Found a corroded fuse... seized motor and a high water mark inside the pump housing. I should...

Thanks all for your comments on the fan controller and I hear and agree with your cautions on messing with the design. Done correctly, the ECM and its supporting systems stay in control (to the limits of their design) and they have no idea there is an extra system installed. I'll let you know...

I'll let you know what I find. Panicked a bit when I took the car out of the garage for annual inspection when it would not switch. Saw a note somewhere that if you put the steering wheel all the way up, it can free up the switch which worked for me but I don't like having to put excessive...

I am going to the right hand cargo compartment behind the seat (where the Bose radio receiver sits on the '93 convertible) I will be installing an Arduino based radiator fan controller in that space so I need to get and send engine data + car speed info. to it. Thanks for the tip about the...

I have a 1993 convertible and looking to run an extra multi-wire cable from the engine compartment into the passenger compartment. I know there are cable runs behind the battery but, is this the best place to get through the firewall? I know there is a cable run that goes through the drivers...

Reversed? I believe it is the other way around. The drive shaft always, always turns faster than the drive wheels. I set up my '65 GTO for the strip with a 4:11 rear end (drive shaft spins a little over four times for each revolution of the rear tire). This gives you amazing, head snapping...