Question about 1999 Ford Taurus

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I get code po301 when i hook up code ive changed the plugs what els could be wrong

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If you have a multimeter, check the resistance of the spark plug wires, especially the one going to the number 1 cylinder.  The resistance changes as the wires age.

Posted on Sep 10, 2009

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2003 acura tl error codes po301 po302 po304 po306 p1399 po300


PO300 and P1399 are random cylinder misfire detected.
PO301 cylinder 1 misfire
PO302 cylinder 2 misfire
PO304 cylinder 4 misfire
PO306 cylinder 6 misfire
I would say that you have damage to the ignition wiring harness or you ECM is failing.

Feb 17, 2015 | Acura Cars & Trucks

1 Answer

I got a 2001 Oldsmobile aurora that the code reads PO301


well that code means ur have a missfire in cylinder one change the wires for the spark plugs that really the only thing i can think off beacuse you have already done the spark plugs and the oxygen sensors and the coil packs

Feb 26, 2013 | 2001 Oldsmobile Aurora

3 Answers

CODES-PO301-PO303-PO316- CHANGED PLUGS & WIRES. STILL MISS ON START UP, GOES AWAY MOST OF THE TIME ABOVE 1000 R.P.M


P0301 - Cylinder 1 Misfire Detected.

Causes:
- Improper spark plug at cylinder #1
- Insufficient compression at cylinder #1
- Incorrect fuel pressure
- The injector circuit is open or shorted at cylinder #1
- Fuel injector #1 may be faulty
- Intake air leak

Solutions:
- Perform Injector Service
- Replaced Spark Plug #1
- Replaced Injector #1
- Replaced Ignition Coil #1

P0303 - Cylinder 3 Misfire Detected.
Follow info from P0301.

P0316 - Misfire Occurred In The First 1,000 Engine Revolutions.

Causes:
- Damaged CKP sensor.
- Ignition System.
- Fuel Injectors
- Running out of fuel
- Fuel Quality
- Base engine
- Damaged Powertrain Control Module

Solutions:
Usually the P0316 is combine with a P03XX codes. The P03XX code indicates in which cylinder the misfire occurred.

Jan 17, 2011 | 2002 Mercury Sable

1 Answer

I have a 97 ford expedition 4.6L im having some trouble with. It started having some hesitation and sputtering in the acceleration and some backfiring when driving. First code said too rich or too lean in...


this may or may not help.
i have a 98 F150 with a 4.6 that i had an independent garage change the plugs and coil packs after i had the same problems you did. i had to take it back to him several times after and it never ran correctly, out of frustration i called the dealer where i bought the truck and took it to them. this was a small dealer about 200 miles from where i live, but my family is there. no large dealer ****, just leave the truck with us. one week later i got it back with everything fixed and it has run flawlessly since 2005. i was told that the problem was (1) the 1st guy didnt know what he was doing. (2) aftermarket parts didnt work. sounds like a load,but...

Apr 25, 2010 | Ford Expedition Cars & Trucks

1 Answer

TROUBLE CODES PO301 & PO306 HAVE ALREADY


P0301 = Cyl no 1
P0306 = Cyl no 6

If you have changed plugs and leads and confident that they are now ok you need to run a compression check on all the cylinders, I'd emagine they should all be running at approximately 150psi per bore, if 1 & 6 are down it could be the head gasket, timing or piston rings.

Nov 25, 2009 | 2003 Ford Taurus

4 Answers

HI I HAVE A 2001 MAZDA TRIBUTE AND THE CODES PO301 AND PO303 CAME UP IN THE DIAGNOSTIC REPORT. THE CAR TURNS OFF WHEN I WARM IT UP IN THE MORNING IN THE COLD AND AFTER THAT ITS FINE I ALREADY CHANGED THE...


cylinder 1 misfire and low compression. Plugs and wires changed plus new fuel injectors. The engines still misses and no one can find the cause. When put on the computer it read misfire cylinder 1.

Dec 31, 2008 | 2004 Mazda Tribute

1 Answer

5vz-fe misfire codes


Replace the coil pack.

Dec 26, 2008 | 1999 Toyota 4Runner

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