95 s10 blazer-obdII code 122,and 1406

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  #1  
Old 08-06-05, 08:20 PM
reyes45's Avatar
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95 s10 blazer-obdII code 122,and 1406

1995 jimmy 4.3 vortec ,hard starting cold and hot,misfires,eraticle idle,rich exaust,obd II 122,172,1406.

what possible reasons for set code. almost all sensors new problem not fix.i appreciate all imput.
 
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Old 08-06-05, 09:05 PM
jeffstevens
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Clear codes, disconnect for a few minutes. Retest and test for hard codes. I belive these have an EGR sensor, or mabe throttle position sensor possible problem
 
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Old 08-07-05, 06:34 AM
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95 s10 blazer

TPS already new. Is the throttle/pedal position sensor the same as the TPS?
What is code 1406? Cannot find it in my book. thanks for all input.
 
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Old 08-07-05, 10:55 AM
jeffstevens
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TPS is throttle position sensor.
Check the EGR sensor, a hose maybe plugged or off. Also you may have to replace sensor. New part is around $100.00
Originally Posted by reyes45
TPS already new. Is the throttle/pedal position sensor the same as the TPS?
What is code 1406? Cannot find it in my book. thanks for all input.
 
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Old 08-07-05, 11:34 AM
Comptech
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Sensor is part of EGR valve. Valve is stuck open,remove and clean the pintle and see what happens. If that don't fix it, time for a new valve.
 
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Old 08-07-05, 11:43 AM
jeffstevens
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1406 is a DPFE (EGR sensor) not an EGR code. You will see a couple tubes on the exhaust manifold, follow them up and you should see the sensor.
 
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Old 08-07-05, 06:16 PM
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Thank you for your help Jeff and Comptech. Removed EGR and found a piece
of carbon debree stuck between pintle and port. Problem fixed.
 
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