Question about 1986 Porsche 944

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1986 porsche 944 dont pass ca smog running too lean

All sensors and plugs oil gas distributor etc car runs perfect referee says gasoline and air mixture is too lean

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  • Porsche Master
  • 2,963 Answers

Probably Nox too high. Can also be engine too hot. Last time cooling system serviced? Also can be carbon in the combustion chamber ignites fuel too soon. Fuel delivery system and all sensors may be a problem. Bad or corroded connections can contribute to bad behavior of the ECU.

Posted on Apr 08, 2015

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How do i set mass air flow valve so it does run too lean to pass ca smog on 86 944 porsche


No way to "cheat". Master emissions mechanic is the only solution.

Apr 08, 2015 | 1986 Porsche 944

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I`ve a 1986 porsche 944 turbo.i`ve replaced both crankshaft sensors,dissy cap and DME relay as it would not start.now the car does start but not very well,chucking out black smoke,hesitates when you press...


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Jul 16, 2010 | 1986 Porsche 944

1 Answer

1986 Porsche 944. Instruments not working


Sounds like a possible fuse problem. Have you checked your fuses yet. If not look in your owners manual to see which fuse(s) control your instrument panel, or anything else you are having trouble with. Keep in mind, if a short did occur for some reason, more than one fuse may be blown. When i accidental crossed two door lock wires, i blew 6 fuses, some of which were not even related to the wires i crossed. Hope this helps

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I have a 1992 nissan sentra that failed the 15mph part of the smog test because of high Hc's and high NOx so what can i do to fix it.


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I just tried starting my 1986 Porsche 944 its been sitting in storeage for 3 years and havent started it since, and now i bled the gas line to get rid of old gas and drained the tank and put more gas in...


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What is the best oil for my car?


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Jul 03, 2009 | 1987 Porsche 944

1 Answer

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2002 Hyundai Sonata wont pass smog


CA you can take the car to a referree and get a one time waiver if you have spent a minimum of $450 on repairs not including smog fees. Gives you two years to get it fixed. Smog Referee Call Center
Toll Free: 1.800.622.7733
You can also sell the car to the state for "up to" $1,000

Aug 19, 2008 | Hyundai Motor 2002 Sonata

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