Archive for April, 2011
Career Education Online – Automotive Diagnostics
Automotive diagnostic strategies:
Barometric pressure, manifold pressure, intake air temperature, volumetric efficiency and exhaust gas recirculation these items are all involved along with modifiers like battery voltage, coolant temperature and throttle position. Of course you have to look at trim, short term fuel trim and the adaptive strategy being long term fuel trim. The most important input to the PCM needs for most any calculation is engine speed. This input comes from a sensor that is located in the distributor. The PCM must see what the engineer designed it to see of the vehicle won’t run.
-Barometric pressure, when the key is first turned to the on position, the PCM reads the BARO sensor to determine the altitude the vehicle will be operating at. Higher altitudes have less dense air and less molecules of oxygen in a given volume of air.
Tags: adaptive strategy, combustion chamber, coolant temperature, diagnostic strategies, egr system, exhaust gas recirculation, input comes from, intake air temperature, nox emissions, volumetric efficiencyRelated posts
Automatic Transmission Repair an Rebuild Dublin CA
Transmission Repair Dublin CA
Automatic Transmission or Transmission Rebuilds
The Four Most Costly Misconceptions
1. I need a new transmission.
You don t always need a new automatic transmission. With the advancement of computers and electronics, many transmission repair problems are not in the transmission at all, but could be an external sensor or switch. A good transmission repair shop can accurately diagnose and repair or rebuild transmission problems and possibly save you hundreds of dollars on the auto or car transmission repair.
2. I ll call around for the best price.
Tags: automatic transmission repair, automotive service excellence, car transmission, costly misconceptions, dublin ca, external sensor, national franchise, repair estimate, transmission repair shop, transmission shopsRelated posts