Question about 1997 Buick Skylark

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Buick skylark 3100 unstable idle

Scanned codes and it popped code po143 o2 sensor, and p1133 manufacture control fuel air metering/// and when i changed spark plugs the other day there was alot of carbon build up on them//// i don't have money to waste on an o2 sensor if it doesn't fix the unstable idle

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Unstable idle can be caused by a vaccum leak. Best way to find a vaccum leak I have found is to
take a tube ( fuel hose or 1/4 inch vaccum line 2 or 3 ft long ) and put one end to your ear and use
the other end to probe around the engine intake manifold area and where ever vaccum lines connect
as well as along each vaccun line to ck for breaks or splits. Another method is to use WD40 to spray
around manifold an vaccun lines. This method usually will ( if there is a leak ) stablize the idle and
cause the idle to increase. Or you can use carb cleaner or startind fluid but these are quite volital and
can cause a fire. So be very careful how you use them. The WD 40 is unlikely to catch fire that is why I RECOMEND IT. With the tube method you will hear a hissing or sucking sound when you find a vaccun leak. Good luck.

Posted on Dec 04, 2008

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Posted on Jan 02, 2017

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96 buick skylark 3.1, start & stalls. after trying to start it for a while it starts & runs great. shut it down & it goes back to start & stall. codes are p0170 & p0171. anyone can help...


First I would check vacuum lines. Replace as necessary. Could be the MAF sensor. Unlikely though. Need a scanner to check this. Next I would replace(aftermarket) or eliminate the catalytic converter. Both the codes are for O2 sensors. Too rich, too lean. Doesn't matter, above is what I would do first.

Dec 28, 2014 | Buick Cars & Trucks

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I just got my car scanned and a few codes pop up


Error Code: P0130
Fault:
Oxygen Sensor (O2S) 1, Bank 1 - Circuit Malfunction
Possible Cause:
Malfunction Indicator Lamp (MIL) Triggered on first occurrence.
-Wiring harness.
-Oxygen sensor (O2S).
-Engine control module (ECM).

Error Code: P0505
Fault:
Idle Speed Control (ISC) System - Malfunction
Possible Cause:
-Wiring harness.
-Idle speed control (ISC) actuator/Idle air control valve (IAC) valve.
-Throttle motor.
-Throttle valve tight/sticking.
-Engine control module (ECM).

Error Code: P0100
Fault Location:
-Mass Air Flow (MAF) Sensor/Volume Air Flow (VAF) Sensor - Circuit --Malfunction
Possible Cause:
-Wiring harness.
-Mass air flow (MAF) sensor.
-Volume air flow (VAF) sensor.
-Engine control module (ECM).

Error Code: P1491
Fault:
Exhaust Gas Recirculation (EGR) Valve Insufficient Lift
Possible Cause:
-Wiring harness.
-EGR Valve.
-ECM

Error Code:P1607
Fault:
-Engine Control Module (ECM)/Powertrain Control Module (PCM)

Error Code: P0966
Location:
-Pressure Control (PC) Solenoid B - Circuit Low
Possible Cause:
-Wiring short to earth.
-Pressure control (PC) solenoid.
-Engine control module (ECM)/Powertrain control module -(PCM)/Transmission control module (TCM) .


Apr 30, 2013 | 2004 Honda Civic

2 Answers

Code p0170


What year vehicle ? mass air flow or speed density fuel control . Do you have a scan tool that can view sensor data . What are the fuel trims ( short & long term ) showing ? PCM problem ? O2 sensors stuck lean , adding propane , do the O2 sensors go rich ?

Jan 10, 2018 | Chrysler Town & Country Cars & Trucks

2 Answers

Computer analysis showed these codes... P0330 P1133 P1135 P1346 P1349 P1351 P1354. can anyone tell me what each of these mean?


P0330 Knock Sensor 2 Circuit (Bank 2)
P1133 Air/Fuel Ratio Sensor Circuit Response Malfunction (Bank 1, Sensor 1)
P1135 Air/Fuel Ratio Sensor Heater Circuit Malfunction (Bank 1, Sensor 1)
P1346 VVT Sensor Range/Performance Problem (Bank 1)
P1349 VVT System Malfunction (Bank 1)
P1351 Variable Valve Timing / CMP Sensor Range / Performance
P1354 Variable Valve Timing System Fault

NOTE:Variable Valve Timing (VVT) sensor is also known as camshaft position sensor.
The Variable Valve Timing (VVT) system controls intake valve timing in response to driving conditions.

Possible causes are:
  1. Incorrect valve timing P1346, P1349, P1351 & P1354
  2. Faulty oil control valve P1346, P1349, P1351 & P1354
  3. Faulty VVT controller assembly P1346, P1349, P1351 & P1354
  4. Faulty ECM All Codes
  5. Jumped timing belt All Codes
  6. Faulty Camshaft Position Sensor P1346, P1349, P1351 & P1354
  7. Faulty O2 Sensor (Bank 1, Sensor 1) P1133 & P1135

Apr 22, 2011 | 1999 Lexus ES 300

1 Answer

The computer says that it has a code p1131 manufactor control fuel air metering also p0135 o2 sensor heater ciruit malfunction bank1 sensor1 and p0307 cylinder misfire


firstly check your 02 sesor bank 1 sensor 1 first because maybe 02 sensor death come out more fuel until air metering cannot control so air metering code came out and spark plug overdose fuel and misfire incur check with ohm meter to get the ohm from the 02 sensor rectify

Apr 02, 2011 | 1999 Mercury Grand Marquis

1 Answer

I GOT A 2000 SILVERADO 1500 OBD CODE IS 421 THE PROBLEM IS I DON'T KNOW LOCATION OR HOW TO FIX THE PROBLEM


Sounds like an O2 sensor, especially if your not experienceing major problems.

Example obd code P0101
1st digit: B-Body, C-Chassis, P-Powertrain, U-Network
2nd digit: 0-SAE (generic), 1 mfg (Manufacturer Specific)
3rd digit:
* 1 Air & Fuel Metering
* 2 Air & Fuel Metering Injector Circuit
* 3 Ignition System (Including Misfire)
* 4 Auxiliary Emissions Controls
* 5 Vehicle Speed Controls And Idle Control System
* 6 Computer Output Circuit
* 7 Transmission
* 8 Transmission
4th & 5th digit - two place fault code 0-99

Feb 02, 2011 | Chevrolet Silverado 1500 Cars & Trucks

1 Answer

Lean fuel mixture code. Both banks. Where is the o2 sensor located? I changed air and fuel filters. Low idle control was bad, replaced it. Changing spark plugs, not done yet.


Air Filter, Fuel Filter,Plugs,Idles Solenoid or Valve, not the issue.
Use logic and know what the parts your about to change do!
O2 Sensors are in the converters or exhaust pipes near it.
The Codes don't mean there bad or to replace something. That is not what codes are for.
While you may have a worn O2 Sensor,you may also have a vacuum leak, that is driving the sensor out of range and setting the codes.

You never said what your drivability issues were!!

Aug 25, 2010 | 1997 Ford Expedition

1 Answer

Malibu 1999 p1133 code


p1133 is manufacturer control fuel air metering, this means that it is a bad 02 sensor. the primary oxygen sensor in the exhaust BEFORE the catalytic converter.

Jul 05, 2010 | 1999 Chevrolet Malibu

1 Answer

Understanding trouble codes for my vehicles


On the Nissan that code means you have a short in the knock sensor circuit or you just need a new knock sensor.

Jan 25, 2010 | 2000 Nissan Quest

1 Answer

Understanding trouble codes for my vehicles


first the quest, this is common for nissan, replace the knock sensor, this sensor is located under the intake manifold rear of engine, some models you can sneak sensor out without removing the intake, this will take care of that car. now the camry, im guessing this is a 4 cylinder engine, replace the air fuel sensor (oxygen sensor) thats on the exhaust manifold. this will solve that problem. hope this helped.

Jan 25, 2010 | 1999 Toyota Camry

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