Tag: C4

LT1 Coolant Change Procedure

I take no credit for this info. This info was given when I asked \”how to\” and I thought I\’d polish & post it for future reference. Thanks to all for the help! LT-1 Coolant Change Procedure: In order to do a good flush you have to remove both knock sensors out of the block, […] More »

  Comments | By - April 21, 2010

Random Starting LT1

I have a 1992 LT1 that had a very random start problem. Fuel Pressure was Ok, Spark to plugs was fine, no error codes were set in ECM. Once the car started it ran fine. Finally took a #47 (12Volt) bulb and put it across the fuel injector wires. Found that when the car was […] More »

  Comments | By - April 21, 2010

Upgrade the ECS Module 1985-1989 Corvettes

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 […] More »

  Comments | By - April 21, 2010

AC R134 Retrofit

There has been a question recently on this topic-so I thought I\’d actually post this link along with some other info. www.epa.gov/ozone/title6/609/retrguid.html It\’s not an add! Just updated info on whats needed or not needed to make it work. Sorry for just giving a link-but I don\’t think I could type all that info in […] More »

  Comments | By - April 21, 2010

C4 MSD Installation

The wiring is straightforward, but finding a place to mount the sucker can be a problem. At the suggestion of many forum members, I mounted mine in the front passenger side area where the horn is located. The trick to this install is buying some aluminum strap, 1\” x .20\” by 3ft. I got mine […] More »

  Comments | By - April 21, 2010

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