Question about 1999 Ford Windstar

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Ran diagnostics. it said missfire on cyclinder 2

Checked plug wire connection at spark plug and ignition coil block. just replaced plug wires not even 3 weeks ago.(WTF?)

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It could be EGR ports stopped up in lower intake mainifold.If you remove upper intake and look inside the ports in the lower intake you will see orffices about the size of a dime with a small hole in the center.These are the EGR ports and if they stop up you will have all the recirculated exhaust gasses going to basically one or 2 cylinders which will dilute those cylinders to much thus causing your skip.

Posted on Feb 12, 2009

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1 Answer

1997 pontiac grand am with no. 4 cyclinder misfire


What have you checked so far? What engine? Check spark plug for ware, cracks and carbon tracking. Check the ignition wires for damage and voltage leaks, this could be done by spraying the wires with soapy water. If the car runs rough or you see arching replace the wires. Check for spark and check the ignition coil and replace as needed.if you still having problems you may have to check the injector or perhaps do a compression test.

Jul 08, 2012 | Pontiac Grand Am Cars & Trucks

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Engine stop


If theres no spark from the spark plugs then you would have to replace them?

Jul 12, 2008 | 1993 Toyota Corolla

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98 passat # 2 missfire help


If your getting a P0302 ( cylinder #2 misfire detected), the first thing to check is the spark plug. If it's new then the next thing to check is the plug wire. If it has individual coils, then swap it out with another one and see if the misfire moves too. If so then the coil is faulty.

May 07, 2011 | 1998 Volkswagen Passat

1 Answer

Missfire cyclinder 1


You are going to need to borrow some tools or go out and buy some to run some quick tests. If the misfire is in cylinder 1 ONLY, the easiest thing to do is to check spark, (spark plug tester).
  1. Put the spark tester into the plug wire and have someone crank it over. Make sure the plug tester is grounded to the block or some metal bracket, otherwise you could damage your coil. IF you don't have spark it could be due to a bad ignition coil. If you have spark at the wire and not the plug then you have a bad plug. IF you have spark coming from the coil wire but not the spark plug wire then you have a bad spark plug wire.
  2. If you see there is spark, the next step is to pull the plug out and test the plug itself. Plug the spark plug into the wire you just tested and pull the fuse (or relay) for the ignition or fuel pump. This will keep the car from starting, but will still allow you to see if the plug is firing.
  3. Also check the plug to see what condition it is in. Has the car been serviced recently, check all of the things that have had serviced.
  4. If you have spark the next thing is compression test. Screw in the compression tester to the spark plug hole in the head. Crank over the engine 3 times. Read the specification and look it up to see what the specification should be. Anything between 115-150 should be acceptable. IF you have any doubts test other cylinders to see what they are running.
  5. The last thing is to check for fuel, that is if you have found spark and compression. Locate the fuel injection port, on some VW models they are not used so consult a service guide if you're not sure.

Mar 23, 2011 | 2000 Volkswagen Golf

1 Answer

I changed plugs and wires all in correct order 96 Gand 4.0L when i was done the truck ran like **** i so i had diagnostics done it gave codes 301 302 302 304 305 306 (all cylinders missfire ) then i...


if you are certain that the wires have been replaced correctly then you could have a bad set of wires even though they are new this happens sometimes but it sounds as if the firing order is off check the engines timing to see if its still in time.

Aug 22, 2010 | 1996 Jeep Grand Cherokee

1 Answer

I changed plugs and wires 96 Gand 4.0L when i was done the truck ran like **** i so i had diagnostics done it gave codes 301-306 (all cylinders missfire ) then i changed the distributor cap rotor and...


301 & 306 are cylinder #1 and #6 misfire. Your spark plug wires are not in the proper firing order in relation to the correct cylinder and distributor locations.

Aug 22, 2010 | 1996 Jeep Grand Cherokee

1 Answer

#2 clyinder not firing in a 02 eldorado with 19000 miles on the car


There are several possibilities.
Based on the year (2002) and low miles (19,000) it probably has the original Plugs, Wires and Coil. Rubber insulation on Wires does dry rot over a period of time. Spark Plugs should be changed about every 3 to 4 years regardless of miles. Wires should be replaced every other Spark Plug change. Translated you should be on you 3rd set of Spark Plugs and 2nd set of wires.
When working in the engine compartment and with the electrical system remember: ther is 40,000 to 75,000 volts present. Bad Wires could mean an electrical shock!
You can cheaply purchase Ignition (Spark Plug/Wire/Coil) Test Kits at most auto parts stores or even at Harbor Freight.
1) Remove the #2 Wire connection to the #2 Coil position.
2) Insert the tester into the #2 Coil position. Clipping the other end onto the engine block or onto a good ground.
3) Start the Engine.
4) You will be looking for a good strong (blue) and rhythmic spark. If it is not strong (yellow or orange) nor rhythmic, the Coil is malfunctioning and should be replaced.
5) If it is a good rhythmic spark, Turn OFF the Engine.
6) Disconnect the Tester and reconnect the #2 Wire to the #2 Coil position.
7) Disconnect the #2 Wire from the #2 Spark Plug.
8) Connect the Tester into the end of the #2 Wire. Clipping the other end to the engine block or a good ground.
9) Start the Engine.
10) Again you are looking for a strong (blue) and rhythmic spark. If is not strong (yellow or orage) and rhythmic, the Wire is bad and should be replaced. Wires should always be changed as a Set is the standard rule.
11) If it is a good rhythmic spark, Turn OFF the Engine.
12) Remove the #2 Spark Plug out of the engine.
13) Check the Igntion end of the Plug for carbon, dirt, or being fouled. Check the Gap.
14) Insert the #2 Spark Plug back into the #2 Wire.
15) Using the Spark Plug Tester. Connect the Tester to the #2 and clip the other end to the engine block or a good ground.
16) Start the Engine.
17) Once again you should be checking for a strong (blue) and rhythmic spark. If it is not strong (yellow or orange) nor rhythmic, the Spark Plug could be malfunctioning.
18) Clean the #2 Spark Plug.
19) Regap the #2 Spark Plug.
20) Retest the Spark Plug.
21) If there is now a strong (blue) and rhythmic spark, then the #2 Spark Plug is now good.
22) If there is not a strong (yellow or orange) nor rhythmic spark the #2 Spark Plug is malfunctioning and needs to be replaced. Again the standard rule is to replace the Spark Plugs as a set.

The several other possibilities relate to sensors. However without additional error codes or the check engine light on, we will assume that the problem can be solved with the solution above.

Let me know if this helped, or if you have additional information or questions. Feel free to contact me at FixYa.com!

Feb 17, 2010 | 2002 Cadillac Eldorado

3 Answers

Missfire in cylinder 2


I assume you know the problem is a misfire in #2 cylinder from checking the diagnostics code. Although these codes can be helpful in narrowing down a problem they lack specific details. In the case there are several possible items that could trigger the engine fault code P0302

These include:
  • Faulty spark plug or wire
  • Faulty coil (pack)
  • Faulty oxygen sensor(s)
  • Faulty fuel injector
  • Burned exhaust valve
  • Faulty catalytic converter(s)
  • Running out of fuel
  • Poor compression
  • Defective computer
Before you spend any money to resolve this you need to narrow this list down even more. Start by pulling the plug. Do a image web search on "spark plug diagnosis". This will give you pictures of plugs with a variety of problems to compare with yours and give you an indication whether or not the plugs need replacing. Next if possible switch #2 plug wire with another. Make sure you switch both ends (coil end and spark plug end) of the spark plug wire.
These are the no or low cost options. Beyond these you will need to start replacing items like the Ignition Coil and O2 sensor.
If you are still having the problem after checking and/or replacing the items listed above, your next step is a compression test on #2 cylinder.
If you get to this point please repost here with the results with the wires and plugs and I will give you the steps to follow with compression testing.
Hope this helps.

Oct 14, 2009 | 2001 Ford Ranger Regular Cab

2 Answers

Misfires and codes PO316, PO306, & PO305 popped up on the diagnostics check. What needs to be fixed based on that?


You will need to replace no 5 and no 6 coil pack and spark plugs. P0316 is random missfire that computer could not detect the cylinder that was causing it,just knew one was missfiring.
Coil packs are common concern on these vehicles. Can get oil leak into the coil pack wells and may also even get moisture into them.
If yours is a 3.9L it may be involved in owner satisfaction program 07M07 or 07N09 in which they will cover them under the program for up to 10yrs or 100000 miles which ever comes first.

Mar 16, 2009 | 2003 Lincoln LS

2 Answers

#1 Cyclinder


check or change spark plug look at the wire check if spark come from the coil check the compression if evething is good injector defectif hope it FIXYA problem pierre

Jul 01, 2008 | 1998 Ford Expedition

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