Question about 1994 Mercury Cougar
Went to have car smog check done and guy said shaking caused machine to abort test at high rpms he said the rear shakes excessively at high rpms. i never have problems while driving. what could cause this?
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Posted on Jan 02, 2017
SOURCE: Car Shakes
Certainly sounds like a partially, or seized caliper hanging up, which has warped rotor. What exactly did they replace at brake job, do you know? Either way they need to be rechecked.
Posted on Mar 27, 2009
Hi, this is an issue that concerns the coil pack on your engine. It is malfunctioning. and, i recommend testing to make sure of thsi issue.
Check for dirt, corrosion or damage on the terminals and repair as necessary.
Measure coil primary resistance between ignition coil pin 4 (B+) and pins 1 (coil 2), 2 (coil 3) and 3 (coil 1) .
Resistance should be 0.3-1.0 ohms. If resistance is out of specifications, replace the coil pack. If resistance is within specifications, proceed to secondary windings testing.
Coil 1-cylinders 1 and 5 Coil 3-cylinders 2 and 6 Coil 2-cylinders 3 and 4
Resistance should be 12.8-13.1 kilohms. If secondary resistance is not within specification, replace the coil pack.
You can jump this link below for a good look at a diagram of the coil pack.
Posted on Jul 11, 2009
This is often the result of a tire that is out of balance. Check for bubbles on any of the tires and have the tires balanced. That should clear up the problem.
Posted on Dec 05, 2009
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