by Pete in NH » Wed Mar 27, 2013 3:51 pm
Hi,
The best advice I can give you on the multiple issues you have listed here about your car is- you really need a factory shop manual ! I think your're going to need to get the speed sensor issue and cooling fan control issue squared away and then look at getting the car tuned up with new plugs, air filter and possibly plug wires, distributor cap and rotor. a poorly tuned car with engine control management issues is likely to burn a lot of fuel. i would not just put in a toggle switch to control the fan without knowing what the engine controller will do. You really need the shop manual to understand how the car was meant to operate. You can usually find the manuals listed on Ebay.