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HAVE A 2005 VW JETTA WITH A 2.5 LITRE STANDARD TRANSMISSION

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WITH PO300 RANDOM MISSFIRE, PO301...
HAVE A 2005 VW JETTA WITH A 2.5 LITRE STANDARD TRANSMISSION WITH PO300 RANDOM MISSFIRE, PO301 AND PO302 MISFIRES ON 1 AND 2 RESPECTFULLY XXXXX XXXXX CRANK SENSOR ALONG WITH PO2279 INTAKE AIR SYSTENM LEAK. I HAVE CHECKED THE PLUGS AND IGNITION COILS ALL OK, I HAVE REMOVED AND REPLACED THE INTAKE PLENTUIM GASKET( I EVEN WENT AS SO FAR AS TO DO A SMOKE TEST WHILE I HAD IT OFF THE CAR FOUND NOTHING BUT SEALED ALL THE SEEMS WITH EPOXY JUST INCASE. THE CAR DOESN'T HAVE A MASS AIR FLOW SENSOR CODE BUT I SWAPPED IT WITH A KNOWN GOOD ONE JUST IN CASE BUT NOTHING CHANGED I ALSO CHECK FOR A CLOGGED CONVERTER NOTHING COMPRESSION CHECK SHOWED ALL CYLINDERS R GOOD
Submitted: 8 years ago.Category: Car
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Answered in 13 minutes by:
7/1/2009
Auto Mechanic: Tom, ASE Certified Technician replied 8 years ago
Tom
Tom, ASE Certified Technician
Category: Car
Satisfied Customers: 25,968
Experience: ASE Certified Master Technician
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Does the car actually run rough?
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Customer reply replied 8 years ago
VERY RUFF AND CONTINUES TO GET WORSE
Auto Mechanic: Tom, ASE Certified Technician replied 8 years ago
Does this seem to get wore in the rain is there a difference in colder weather then hot?
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Customer reply replied 8 years ago
WE ARE IN NEW ENGLAND RIGHT NOW IT HAS BEEN RAING FOR 35 DAYS STRAIGHT SO THE WEATHER IS CONSSITANT IT RUNS THE SAME REGAURDLESS
Auto Mechanic: Tom, ASE Certified Technician replied 8 years ago
Ok there are numerous problems with the coil packs how did you check the coil pack to make sure its good it needs to be checked when its hot
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Customer reply replied 8 years ago
I SWITCH THEM OUT WITH BRAND NEW ONES
Auto Mechanic: Tom, ASE Certified Technician replied 8 years ago
Ok just checking going over the most common issues first ,how about the coolant temp sensor have you replaced that?
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Customer reply replied 8 years ago

I HAVE A SNAP ON MODIS HOOKED UP AND DON'T SEE ANYTHING WRONG WITH THE TEMP SENSOR AND NO CODES HAVE COME UP FOR IT AFTER 15 TEST DRIVES

 

Auto Mechanic: Tom, ASE Certified Technician replied 8 years ago
Have you checked the egr valve?
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Customer reply replied 8 years ago

NOT YET BUT I WILL TAKE A LOOK AT IT

 

Auto Mechanic: Tom, ASE Certified Technician replied 8 years ago
Ok see if its operating properly and if its clogged with carbon let me know
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Customer reply replied 8 years ago
OK GIVE ME ABOUT AN HOUR
Auto Mechanic: Tom, ASE Certified Technician replied 8 years ago
No problem ill be here
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Customer reply replied 8 years ago
THE EGR VALVE WAS DIRTY BUT NOT PLUGGEDI HAVE ALL THE CODES BACK NOW INCLUDING MISFIRES ON ALL 4 CYLINDERS, PO0016 CRANK SENSOR PO300 RANDOM MISFIRE PO 301 PO302 PO304 PO305 P2279 INTAKE AIR SYTEM LEAK
Auto Mechanic: Tom, ASE Certified Technician replied 8 years ago
Is it making any unusual sound like a whistling noise like a vacuum leak
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Customer reply replied 8 years ago
NO I TRIED TO ENRICH IT WITH SOME PROPANE BUT NO RESULTS
Auto Mechanic: Tom, ASE Certified Technician replied 8 years ago
OK did you check to see if the pcv valve is operating ok
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Customer reply replied 8 years ago
YES I DID NOTICE WHEN I TAKE THE DIPSTICK OUT IT ACTS LIKE THE OIL CAP IS OFF YOU KNOW HOW IT SOUNDS WHEN THE CAP IS OFF, JUST LIKE THAT BUT A LITTLE MORE SO
Auto Mechanic: Tom, ASE Certified Technician replied 8 years ago
Ok give me a little time to do some more research ill post what I find later
Tom
Tom, ASE Certified Technician
Category: Car
Satisfied Customers: 25,968
Experience: ASE Certified Master Technician
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Customer reply replied 8 years ago

ok thanks this car is starting to get me upset

 

Customer reply replied 8 years ago

I DID NOT MEAN TO HIT ACCEPT THE PROBLEM HAS NOT BEEN RESOLVED

 

Auto Mechanic: Tom, ASE Certified Technician replied 8 years ago
No problem I will continue to work with you regardless till we figure this out or you can contact customer service for a refund , I'm not here to just take your money , here to figure this problem out
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Customer reply replied 8 years ago
OH I KNOW, JUST TIRED MORNING
Auto Mechanic: Tom, ASE Certified Technician replied 8 years ago
Ok im still doing some research so dont give up
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Customer reply replied 8 years ago
OK I'LL HANG LOOSE I HAVE SOME OTHER CARS TO WORK ON ANYWAY
Auto Mechanic: Tom, ASE Certified Technician replied 8 years ago
ok
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Customer reply replied 8 years ago
WE JUST GOT A CRANK POSTION SENSOR IN IT AND STILL RUNS JUST AS BAD COULD THIS THING HAVE A BAD COMPUTER
Auto Mechanic: Tom, ASE Certified Technician replied 8 years ago
Yes thats what its looking like either the computer is bad or the harness is chewed from a rodent or a wire broke
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Customer reply replied 8 years ago
OK I'LL LOOK AT THAT
Auto Mechanic: Tom, ASE Certified Technician replied 8 years ago
Ok
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Tom
Tom
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