1990 Hummer H1 P3493 Fault Code Check

When you check 1990 Hummer H1 car engine light came on code P3493 the reason should be . However Hummer manufacturer may have a different definition for the P3493 OBD-II Diagnostic Powertrain (P) Trouble Code. So you should chech it on our car models.

To solve P3493 1990 1990 Hummer H1 problem, you'll have to remove the muffler, crankcase and other components blocking the valve chamber. Then, remove the cylinder head bolts (label for easy re-installation) Adjust the jaws of the valve spring compressor until they touch the top and bottom of the valve chamber Push the tool in to compress the spring and tighten the jaws Remove the retainers and lift out the valves , compressors and springs

1990 Hummer H1 P3493 OBD-II Diagnostic Powertrain (P) Trouble Code Description P3493 Cylinder 12 Exhaust Valve Control Circuit/Open so you have to check ODB-II Fault Code Check list. Reason For 1990 Hummer H1 P3493 Code The reason of 1990 Hummer H1 P3493 OBD-II Fault Code Check is P3493 Cylinder 12 Exhaust Valve Control Circuit/Open.

1990 Hummer H1 P3493 Possibble Fix Ways :

The engine relies on the glow plugs to generate heat to help with the combustion cycle. Some engines only use the glow plugs when cold but others will allow the glow plugs to work when the ECU (vehicle's computer) needs them to be on to help with combustion. Problems in this area will cause diesel engine starting problems, uneven running and white smoke when the engine is cold.

The P3493 1990 1990 Hummer H1 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. P3493 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 P3493 1990 1990 Hummer H1 with your car's computers to find out exactly what's prompting the light to turn on.

What does fault code P3493 mean for 1990 Hummer H1 ? What does a diagnostic reading P3493 mean for 1990 Hummer H1 ? How to fix OBD2 Code P3493 for 1990 Hummer H1 ? What do we know about P3493 code for 1990 Hummer H1 ?