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Old 05-28-2010, 02:37 PM   #1
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Default p1399 code

hello guys i'm tryin to figure out wuts wrong with my friends car. i already changed a ect sensor and changed spark plugs after getting a missfiring in cylinders 1,3,and 5. erased all those except for p1399 code.

the car shakes at random times and it sounds the like the manifold makes a hming noise like from a stereo which is weird and thats all i gottta go by. does anyone kno what i should look for?

tranny fluid is low
engine oil looks really dirty
one of the cables on the throttle isn't their.

and i don't think i'm leaving anything out lmk if u guys have any ideas. on where to pin point this problem thnx
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Old 05-28-2010, 04:36 PM   #2
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Default Re: p1399 code

Sounds like you have a vacuum leak.

Grab a can of carburator cleaner and spray around the intake manifold area with the car running. If the idle surges, you've found your leak.
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Old 05-28-2010, 05:00 PM   #3
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Default Re: p1399 code

P1399 is a temporary code for multiple misfires and is usually not listed in the manuals. What year and model is the car and have you run a compression test and checked the timing? If this is a J-series V6, have you checked the valve lash?
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Old 05-30-2010, 10:17 AM   #4
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Default Re: p1399 code

its a 2001 tl 3.2 l the j series v6 vtec. today i'm gonna do a valve adjustment and do a compression test, but how do i check timing, i got a timing gun but how do i do so without a dizzy ?
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Old 05-30-2010, 11:12 AM   #5
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Default Re: p1399 code

would the car b ticking if it needed a valve adjustment >?
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Old 05-30-2010, 11:21 AM   #6
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Default Re: p1399 code

Usually, but not necessarily. A loose valve will tap, but a tight valve won't. The exhaust valves are known to tighten up while the intake valves loosen up in these engines.

By timing, I meant camshaft timing.
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Old 05-30-2010, 11:37 AM   #7
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Default Re: p1399 code

aright thnx man that was a big help i'll let u kno how it goes....
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Old 08-09-2010, 04:50 PM   #8
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Default Re: p1399 code

I had this problem...turned out it was the intake manifold leaking, but I couldn't tell with the carb cleaner test. I had to do a smoke test.
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Old 08-21-2010, 05:42 PM   #9
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Default Re: p1399 code

We had this code plus other misfire codes for specific cylinders. The problem was that the ignition coil pack for the #6 cylinder had failed. After the coil pack was replaced, runs as good as new.
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