Hello i have a 1987 cougar with a 3.8 engine i put a new switch in it still wont do anything put a new solinoid on still nothing i can jump it off the solinoid and it starts

SOURCE: 1997 mecury cougar v8 engine. Wont start. It is

Not sure if you got your cougar running or not, but I had a similar problem and it turned out to be my Crank shaft sensor. I replaced it myself, its fairly easy if you are the type that likes to pull stuff apart and fix it. The part cost about $20. you do have to move the ac compressor over but you don't have to remove it makes the job a lot easier. I am still running the 1997 cougar xr7 30th anniversary edition, it has 160000 miles on it and still running strong. I think these are the best cars mercury ever built, i hope they come out with them again in this body style and platform.

SOURCE: Mercury cougar wont start

My first suspicion is the battery connections may be lose and also the battery may now be run down. If you take the terminal connections off and clean them and the terminal posts so that they are shiny clean and charge the battery you can try again. If the car starts, that was the problem. If it doesn't, then look for the starter solenoid and lose connections there and also look toward the starter next. A tech with a volt meter can run independent checks and narrow it down further but having good connections and a charged battery are necessary to get started with the other tests.

SOURCE: 1993 Mercury Cougar XR-7 V-6, Overheating

Your problem could be the coolant temp sensor, or it could be the gauge itself, but something 2 do is if you can get it to a dealer, or a parts store. If you cant get it there, you can get an OBD I scanner and retrieve the code and know why the check engine light is on, but it could be from any of the sensors on the car, would be best to get it scanned.

Stephen

• 21873 Answers
• Posted on Aug 03, 2012

SOURCE: 99 Mercury Cougar won't start. I turned key to start, has current to relay. Jumped relay, will turn over. Spark to plugs but no fuel to injectors. Fuel pressure in fuel rail. No check engine

Have you checked the automatic shut down relay ?
It powers the injectors from a 20amp fuse number 5.