Question about Cars & Trucks
Any help ?????
Posted by Anonymous on
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Posted on Jan 02, 2017
SOURCE: Three trouble codes
Trouble Code: P0421
Catalyst Efficiency Below Normal (Bank 1)
Air leaks at the exhaust manifold or in the exhaust pipes
Catalytic converter is contaminated, damaged or has failed
Front HO2S and/or the rear HO2S is loose in the mounting hole
Front HO2S older (aged) than the rear HO2S (HO2S is lazy)
Front HO2S or rear HO2S is contaminated with fuel or moisture
Trouble Code: P1173
HO2S-21 (Bank 2 Sensor 1) Circuit Malfunction
Base engine mechanical fault affecting one or more cylinders
EVAP Purge valve stuck or the hoses to the valve are reversed
Fuel metering fault (fuel injector sticking open or leaking)
Fuel pressure too low or too high, fuel supply contaminated
HO2S element is contaminated or the HO2S heater has failed
PCV system has air leaks at the valve or related hoses
Trouble Code: P0174
Adaptive Fuel Trim Too Lean (Bank 2)
Vehicle driven low on fuel or until it ran out of fuel
One or more injectors restricted or pressure regulator has failed
Fuel delivery system supplying too much or too little fuel during cruise or idle periods (e.g., faulty fuel pump, or dirty fuel filter)
Air leaks after the MAF sensor, or air leaks in the PCV system
Air leaks at the EGR gasket, or at the EGR valve diaphragm
Exhaust leaks before or near where the front HO2S is mounted
HO2S is contaminated, deteriorated or it has failed
Fuel control sensor is out of calibration (i.e., ECT, IAT or MAP)
Base engine -mechanical- fault affecting one or more cylinders
Posted on May 18, 2009
SOURCE: 1999 pontiac firebird misfire
Misfire is caused by one of three things. Spark, Fuel or Air. Here's a seperate post that will get you started in looking in the places-> http://www.fixya.com/cars/t4220629-oldsmobile_alero_misfires
Cheapest place to start... CD2 Oil Detergent. See other post for instructions.
Second cheapest place to start. Change Plugs and Wires.
For teh rest.. look at other post.
Posted on Feb 27, 2010
It can be related. Was this a real highflow like a maganaflow or catco or was it one of the straight through designs? if you can see through it, even if it is marketed as a cat, it isnt.
Posted on Mar 05, 2010
SOURCE: 1999 firebird turn signal relay
you have to find it first not sure where it is located more than likely under dash is put your head into another firebird and turn on indicators should locate it by sound its just a plug in
Posted on Mar 25, 2010
SOURCE: I have an 1999 ford
P0344 = cam position sensor error
P0603 = Internal control module keep alive memory error.
P1670 = communication error between PCM and IDM
P0562 = system voltage low
My guess is you probably have some wiring issues but it's hard to tell exactly where.
Posted on May 17, 2011
Tips for a great answer:
Oct 30, 2014 | 1999 Pontiac Firebird
Trouble Code: P1870
Transaxle Component Slipping (4T60-E)
Trouble Code Conditions: DTC P0502, P0503, P0740, P0753, P0758, P0785 and P1860 not set, engine started, vehicle driven to a speed of 30-82 at an engine speed of 1000-3000 rpm, Fuel Shutoff inactive, TP angle from 8-35%, commanded gear not in 1st gear and the gear range is D4, TF
Nov 28, 2012 | 2000 Pontiac Firebird
Dec 31, 2011 | 1999 Pontiac Firebird
Oct 17, 2011 | 1999 Pontiac Firebird
Apr 13, 2010 | 1999 Pontiac Firebird
Apr 12, 2010 | 1999 Pontiac Firebird
Apr 11, 2010 | 2001 Pontiac Firebird
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