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1990 Mercury Cougar P1491 Fault Code Check

When you check 1990 Mercury Cougar car engine light came on code P1491 the reason should be Engine Light ON (or Service Engine Soon Warning Light). However Mercury manufacturer may have a different definition for the P1491 OBD-II Diagnostic Powertrain (P) Trouble Code. So you should chech it on our car models.

P1491 1990 1990 Mercury Cougar Code Clear

Another consequence of P1491 1990 1990 Mercury Cougar engine overheating may be a blown head gasket. Heat makes aluminum swell almost three times faster than cast iron. Thermal stress can distort the head and make it swell in areas that are hottest like those between exhaust valves in adjoining cylinders, and areas that have restricted coolant flow like the narrow area that separates the cylinders. The typical aluminum head swells most in the middle, which can crush the head gasket if the head gets too hot. This will usually cause the head gasket to leak compression between adjacent cylinders, or leak coolant into the cylinders.

1990 Mercury Cougar P1491 OBD-II Diagnostic Powertrain (P) Trouble Code Description

1990 Mercury Cougar car P1491 OBD-II Trouble Code Secondary Switch Solenoid Circuit Malfunction is one of the definitions for the P1491; however your vehicles manufacturer may have a different definition for the P1491 code. Please check below for you

Reason For 1990 Mercury Cougar P1491 Code

The reason of 1990 Mercury Cougar P1491 OBD-II Fault Code Check is P1491 Secondary Switch Solenoid Circuit Malfunction.
P1491 Code Reason

1990 Mercury Cougar P1491 Possibble Fix Ways :

Check your choke plate. Is it positioned correctly? Is it still working as it should? Does it open completely? If not, then you either replace it or repair it. If the damage is quite severe, I suggest you put down your repair tools and start looking around for a replacement choke plate to avoid a repeat of this nasty episode.

The P1491 1990 1990 Mercury Cougar Check Engine lamp is perhaps the most troubling of lights because it could mean so many different things, from you didn't screw the gas cap on tightly enough to look out for pistons flying through the hood and into the stratosphere. The easiest way to find out what this light is telling you is to hook your vehicle up to a scan tool. P1491 diagnostic tool looks a little like an oversized calculator and plugs into a communication port inside the car. After you instruct it to perform the scan, it speaks P1491 1990 1990 Mercury Cougar with your car's computers to find out exactly what's prompting the light to turn on.

What does fault code P1491 mean for 1990 Mercury Cougar ?
What does a diagnostic reading P1491 mean for 1990 Mercury Cougar ?
How to fix OBD2 Code P1491 for 1990 Mercury Cougar ?
What do we know about P1491 code for 1990 Mercury Cougar ?