Question about 2003 Nissan Maxima

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1987 Maxima- runs rough at low speeds, won't pass 50/15 emmissions test. High speed ok, black smoke from exhaust when starting after stall at low speeds.

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  • Anonymous Mar 21, 2014

    fail emissions test

  • Anonymous Mar 21, 2014

    Runs rough and will stall at low RPMs.



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Phil Lovisek

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  • Nissan Master
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Check your injectors.use a ohm meter and check resistance. 1987 maxima reading is somewhere between 10.1-14.2 ohms. if out of spec, replace. Also check your air flow meter and air box, make sure its all clean in there. good luck. post results.

Posted on Aug 15, 2008


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1989 Dodge Raider just failed emmission test...HC ppm Reading 485 allowed 185---CO% reading 10.50 allowed 2.36 what can i do to reduce numbers?

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Black smoke from exhaust, rough idle, black soot on plugs

signs of a bad fuel pressure regulator-- the vehicle will run rough, the engine will not start ( usually in the mornings,) many times engine starts but stalls shortly after starting. a bad regulator can result in fouled plugs. replacement is only cure. 1- black soot on plugs-2-black smoke from tailpipe-3- running rough-4- stalling, good-day! repost if need be.

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I have a 95 Tahoe with 158000 miles. In Maryland you have to get your vehicle emmission tested every 2yrs and mine passed the highway speed and lower speed exhaust emmissions but failed at idle test. Is...

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Volvo 240 1991 stalling

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Jul 12, 2009 | 1991 Volvo 240

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May 25, 2009 | 2003 Nissan Maxima

1 Answer

Will not run at an idle

Try this, it is the common reason for this problem.
Here is the common cause of surges, stalls at stops, slow idle speed, erratic idle speed, rough idle and engine hesitation (and other problems), it is in most cases the idle speed control air-bypass valve and or throttle valve and upper intake, these area's get full of gunk and combustion residue over the miles and cause idle issues (stalls, low idle) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake

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Hard start, rough idle, some black smoke, engine service light on

A scan for trouble codes may point you in the right direction quickly, rather than hit & miss, with replacing parts. Some of the autoparts stores will scan for free, and your right where you need to be to get the right part at the same time.

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1 Answer

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Replace the ECT sensor.
And letme know. If you feel any diference. ok.

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