1990 Mercury Cougar Q&A
1990 Mercury Cougar Question: Engine knock
Had accelerator stick open for 3 seconds with no load Now have engine knock when accelerating Will still run with power and does get louder as engine warms up. 1969 Cougar Convertable with 390CI - Visitor
sounds like you spun a bearing. if you do nothing, it will destry the crank and possibly more. Roy - mastertech6371
At idle, the motor has a thump when the pistons fire. Sounds like a piston misfire. The engine light may be something else.
bottom, back,left of engine there is a plug in. ..mine had nothing plugged into it. ..it's it a knock or oil sensor?
The Ohm Guage just stopped working but all other guages on dash work