...EGR vacuum diaphragm is able to hold a vacuum. If not, the diaphragm is leaking air into the intake stream and leaning out the mixture so much that you have misfiring. If it holds vacuum, check for ...
egr to module. all ok. i was pulling my hair out cause this fault po401 always returned UNTIL i went to the throttle body and found the R port plugged, so i cleaned and po401,420 are gone, now i got a
Question about Toyota Tacoma
...toyota prerunner 4cyl - replaced egr valve still getting check engine light Truck runs fine. Gas mileage has decresed by a pretty good margin. What else might the problem be? check for a vacuum
...EGR VALVE IS STUCK OPEN OR THE PCV SYSTEM HAS VACUUM LEAK - DIRTY OR STICKING FUEL INJECTORS - BAD COIL OR PLUGS - MASS AIRFLOW METER IS CONTAMINATED OR ITS SIGNAL OUT OF RANGE. PO451 - EVAPORATIVE ...
...EGR vavlr or Cadalitic Converter, or something else? That code is P0171= system too lean (bank 1). The computer is reading a lean condition and is trying to richen up the mixture but is unable to ...
Question about Toyota Tacoma
...EGR Vacuum Modulator: The EGR vacuum modulator controls the EGR valve's operation. If it's faulty, it can lead to insufficient EGR flow. Vacuum Leaks: Check for vacuum leaks in the EGR system. Leaks ...
...EGR has a vacuum diaphram. It can leak without the line being off. If you can reach the EGR by hand on a cold engine, take off the vacuum hose and compress the EGR with 1 hand then plug the hole with ...
...vacuum of the EGR valve and the passage pipe. Install the new EGR gasket and connectors. Allow the vehicle to warm up outdoor to burn up any remaining WD-40. Take it for a test drive. Please rate my ...
...vacuum of the EGR valve and the passage pipe. Install the new EGR gasket and connectors. Allow the vehicle to warm up outdoor to burn up any remaining WD-40. Take it for a test drive. Please rate my ...
...vacuum at egr at idle. If you have manifold vacuum, egr solenoid is bad. Find and disconnect egr solenoid wire while car is running. Vacuum should come on when disconnected and go off when connected ...
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