2000 Chevrolet S-10
Problem for Chevrolet 2000 S-10

Trouble code p0134 and p0171




By guyfelix on Jun 16, 2009

" "
My 2000 chevy s-10 is throwing a p0134 and a p0171. We recently had the radiator replaced, and flushed. The heater core was still pluged so i bypassed it. The car was now running at opp temp. and since the new codes showed up, the temp seems to varry between 209 to 155. Please help

Solution #1

posted on Aug 31, 2009
Not Rated)

Mustgo

Rank: Guru  Chevrolet Cars  Expert
Rating: 88%, 199 votes
How many miles is on this truck?

>100,000 miles?


To save time,please do a combustion block leak test to rule out pin hole head gasket leak.

A shop can do this test in few minutes.

Start monitor for coolant and oil levels.

===
Check the O2 sensors wires and make sure they are not damaged or cut.
===

If the wiring to O2 looks OK then you are ready for new O2.

===

Check and clean the connector of the coolant temperature sensor.

If the dash reading is OFF from the actual thermometer reading then change the coolant temp sensor ASAP.

-----------

EGR leak and carbon blockage can indirectly cause P0171 code.

Cleaning carbon from EGR valve and EGR air passage is a whole day job.

Make sure you has a NEW EGR base gasket before you start.

======


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