U3978 DTC For Chevrolet Sprint

Chevrolet Sprint Engine Specifications:
Engine Type :Multi-Cylinder Engine
Cylinder Type :In-Line Engine
Engine Air Intake Process :Turbocharged Engine

Your Chevrolet Sprint engine control system detects a problem, the computer stores the diagnostic trouble code U3978 in its memory. To figure out what is wrong with your vehicle you must first extract the U3978 DTC For Chevrolet Sprint.

To solve U3978 Chevrolet Sprint 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

U3978 Chevrolet Sprint DTC Meaning

U Network Code - Problem is climate control system, lighting, airbags, etc.
3 SAE - Generic
9 Transmission
7 Exhaust Gas Recirculation System Valve 1
8 Park/Neutral Postion (PNP) Switch Circuit Engine Torque Signal Circuit

OBD U3978 Chevrolet Sprint code and tailpipe testing are two different approaches to identify vehicles in need of repair. The OBD system looks for broken or malfunctioning emissions control components and U3978, while tailpipe tests sample a vehicle's exhaust to see if it is above or below certain prescribed limits. Given the robust nature of today's emissions control components, it is entirely possible for an individual component to U3978 DTC For Chevrolet Sprint malfunction without leading to an immediate increase in emissions at the tailpipe. In such cases, other components (like the catalyst) can temporarily compensate for the part that is broken however, these other components can only do double duty for so long before they, too, begin to malfunction. In addition, OBD also monitors for U3978 DTC For Chevrolet Sprint and other malfunctions in the fuel system problems that traditional tailpipe tests were not designed to identify. Most state and local areas also include a gas cap pressure test as part of an emission inspection.

U3977 DTC (Previous DTC Code) ( Next DTC Code ) U3979 DTC
You can also check other Chevrolet car models :
The listed Chevrolet models will give information about U3978 DTC.