Question about 1999 Pontiac Sunfire

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I have 5 po codes they are 132 141 341 342 and 440 Whats going on

Won't pass emissions test.1999 sunfire 2.2

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  • 12 Answers

Oxygen sensors, purge canister (if has filter replace) pressure sensor gas tank. google OBD II Codes, will give you what triggers the code helpful for troubleshooting

Posted on Jan 02, 2013

  • John Rose Jan 08, 2013

    Thank You this was very helpful

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 14036 Answers

SOURCE: code 172 came up on diagnostic test

CODE PO172 - FUEL SYSTEM RICH BANK 1 CONDITIONS. POSSIBLE CAUSES : 1. BASE ENGINE MECHANICAL FAULT AFFECTING ONE OR MORE CYLINDERS. 2.EVAP SYSTEM COMPONENT HAS FAILED OR CANISTER FUEL SATURATED. 3.FUEL CONTROL SENSOR IS OUT OF CALIBRATION.( ECT IAT MAP ) 4. FUEL SYSTEM SUPPLYING TOO MUCH FUEL AT IDLE SPEED OR AT CRUISE. 5. FUEL INJECTOR(S) IS LEAKING OR STUCK PARTIALLY OPEN. ( ONE OR MORE ) 6. HO2S IS CONTAMINATED DETERIORATED OR IT HAS FAILED.

Posted on Nov 10, 2009

  • 355 Answers

SOURCE: PASS LOCK ON 1999 PONTIAC SUNFIRE

you need to get rid of passlock or spend a lot of money in the new cylinder and key that only a dealer would make. There is a detailed write-up for bypassing passlock here: http://newrockies.ca . The guy is great, and this was the only way I was able to save my Park Avenue.

Posted on May 01, 2010

  • 236 Answers

SOURCE: My service (with a wrench)

ABS and Trac light are both on because of a anti-lock brake system issue. This will not effect the emissions system of your vehicle. You probably have a bad wheel speed sensor but there is no way to tell without plugging in to your diagnostic plug with a scan tool.

Posted on May 06, 2011

redds55
  • 2620 Answers

SOURCE: pontiac bonnev. 1999 will not pass in. emissions

Check vacuum lines at the throttle body for leaks if good then take EGR Valve off and clean carbon out with a non-chlornated brake cleaner.Then clear code from computer and if it comes back on check the fuel pressure it should be 48-55 psi with the key on and the engine off.If its not within these specs then the fuel pump is weak and needs to be replaced.

Posted on Nov 02, 2011

austinmd
  • 10 Answers

SOURCE: Cooling fan won't come on. 2003 sunfire

check fuse

Posted on Apr 15, 2012

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My service (with a wrench) light has come on with my 200 pontiac sunfire along with my ABS light and Trac light. I am not sure if I will pass emissions because of this. What can I do as a temporary fix...


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On a good note, sounds like it's a anti-lock brake issue. A system scan will pinpoint the problem.

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Wont complete scan to pass emission test


When you rest your codes there is a series of tests your ECU has to go through before you can pass emissions. this is done some people can reset the code and go before its sets the code again. on the 96 you can have 2 tests not complete for it to pass. basicly you have to drive the car a couple days for the tests to pass.

check the readiness tests wait until only 2 have not passed. then you should be good.so drive and check.

Michael
ASE certified
PLZ rate.

Feb 09, 2009 | 1996 Chevrolet Blazer

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