1998 Chevrolet Trailblazer Ext P1491 Fault Code Check

When you check 1998 Chevrolet Trailblazer Ext car engine light came on code P1491 the reason should be Engine Light ON (or Service Engine Soon Warning Light). However Chevrolet 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.

Another consequence of P1491 1998 1998 Chevrolet Trailblazer Ext 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.

1998 Chevrolet Trailblazer Ext P1491 OBD-II Diagnostic Powertrain (P) Trouble Code Description 1998 Chevrolet Trailblazer Ext 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 1998 Chevrolet Trailblazer Ext P1491 Code The reason of 1998 Chevrolet Trailblazer Ext P1491 OBD-II Fault Code Check is P1491 Secondary Switch Solenoid Circuit Malfunction.

1998 Chevrolet Trailblazer Ext 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.

While fuel economy was increased, acceleration was seriously compromised, and the loss of engine vacuum led to a dangerous loss of braking assist when the P1491 1998 1998 Chevrolet Trailblazer Ext code system was in four-cylinder mode. In addition to these issues, while the company proposed a hydraulically controlled system that could be switched from within the car, the version they implemented had to be manually changed in the engine compartment using hand tools.

What does fault code P1491 mean for 1998 Chevrolet Trailblazer Ext ? What does a diagnostic reading P1491 mean for 1998 Chevrolet Trailblazer Ext ? How to fix OBD2 Code P1491 for 1998 Chevrolet Trailblazer Ext ? What do we know about P1491 code for 1998 Chevrolet Trailblazer Ext ?