If your Corvette was built after 1981, the Check Engine or Service Engine Soon light will illuminate at some point. Unfortunately, there are many misconceptions about the glowing yellow light.
Tag: 1985
1984-1996 Corvette Suspension Overview
This is the first installment of a C4 suspension overview series. Click to view the second article, Click to view the third article The fourth generation Corvette was a radical departure from General Motors early Corvette engineering. It eliminated a perimeter frame to support the suspension and driveline. Two front frame rails integrated into the first ever Corvette uni-body […]
C4, C5, and C6 Interior Squeaks
While plastic certainly has its merits in our modern society, it can be problematic when it is used extensively in automotive interiors. Temperature extremes, excessively bumpy roads, and improper removal/reinstallation are the biggest factors that can cause annoying interior component squeaks. 1984-1989 Corvettes are arguably the worst affected, with later C4s, C5s, and C6s being […]
1984-96 Corvette Chassis Reinforcement
Is your C4 plagued by body flex when you remove the top? This is a common complaint from most C4 owners. Cornering can feel rather uncomfortable with the top removed since the top provides a substantial amount of rigidity to the chassis. Unkempt roadways also cause problems that will eventually lead to squeaks and rattles. […]
1984-1996 Corvette EGR Diagnosis
Exhaust Gas Recirculation (EGR) came about in 1975 when catalytic converters were introduced. The inert exhaust gas was used to quell the increased heat in the engine’s cylinders from the lean fuel mixtures required to keep the catalytic converters from melting down. EGR systems also helped eliminate spark knock from the increased combustion chamber temperatures. […]
Corvette Central C4 Cutaway Videos on YouTube
As we covered in an earlier post (“Why Cut Up a C4 Corvette?“), for the last few years, we had been discussing the possibilities of using a donor C4 for seminar and display purposes. We knew that many owners had plenty of questions on how the C4′s were put together. Why not dissect one for […]
C4-C6 Corvette Control Arm Urethane Bushing Installation Overview
Over time, the original rubber control arm bushings on C4-C6 Corvettes will wear out and fail. While some owners will want to stick with new rubber bushings as a replacement option, there is another option that has become almost second nature in recent years: urethane bushings. These bushings offer two primary benefits: longer life and […]
C4-C6 Corvette Tire Fitment Guide
For your convenience, below are the published OEM front and rear tire sizes and speed ratings for every Corvette produced between 1984 and 2013.
Weatherstrip 101 for C4 Corvettes
Story by Chris McDonald, Auto Enthusiast Magazine, November 2011 (Reprinted with Permission) There are many reasons why you would consider changing the weatherstripping on your C4. Over time, the rubber breaks down, hardens and cracks, leaving an unpleasant appearance, poor seal, wind noise, and the dreaded drip. If you own a C4 and actually drive […]
1984-1996 Corvette Cooling Fan Control Modifications
By Chris Petris Illustration by Chris Petris A common question asked among C4 Corvette owners is “why does my engine run so hot? The cooling fans do not come on until the coolant temperature is way too hot”. Federal regulations required high operating temperatures to keep idle emissions at their designated levels. The oxygen sensor […]