Background The \’85-\’89 L98 uses an Electronic Spark Control (ECS) module to listen to the Knock Sensor and report ping to the ECM (on \’90-\’96 Corvette motors the ECM listenes directly to the Knock Sensor). When the ECM detects knock counts it pulls timing till no knock is reported and then gradually increases timing to […]

Please note that this process was written by C5-TECH. Since there was not a tech tip for the C5 yet and the overwhelming response to a thread I posted regarding this issue…I thought you all could benefit from the pictures of my decarb. 1. Disconnect the pcv line by the throttle body and insert a […]

You can acess all of the cars trouble codes from the dic and erase them! I know it works on my 99 but, I am not so sure on the earlier C5′s. Here is what you do: Press and hold options and then press Fuel 4 times while still holding the options button you must […]

… Here are the sure fail tests for the fuel system to save you time and money.. Take a fuel pressure gauge attach it to the schraeder valve.. turn the key on and off a few time to build up the pressure in the system… If you are having starting trouble the pressure will probably […]