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I have a 2004 Chevy impala 3800 v6 I have changed the spark plugs and wires, Catalytic converter, Resonator, changed one bad coil pack 1&4, the rest test good along with the ignition module it's still dumping raw gas in my engine doesn't want to pick up speed rough idle, wants to stall when you come to a stop, and plus I cleaned the egr valve and cleaned out the throttle body what is going on please help

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  • JEREMY SHIPMAN Dec 02, 2012

    I'm down too vacum leak or a injector fault is there a cheap secret to find out if I do. when I changed the plugs it called for the factory plugs witch they where 6.99 but I went with ac delco would that matter it's weird I have a Buick park Ave 3800 series II ultra and I put each one of my coil packs on hers her 4 and 1 is brand new then I put my ignition module and my coil pack my ran the same and hers still had that same problem and it reads as follows IGNITION SYSTEM FAULT SPARK PLUGS, IGNITION COILS, VACUM LEAK, INJECTOR FAULT, OR HIGH OR LOW FUEL PRESSURE

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6 Suggested Answers

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Posted on Jan 02, 2017

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SOURCE: 95 camaro no spark on cylinder 6

Loud popping in the intake means that the unburnt gas exploding in intake.... Check cranks sensor and gear. Gear may dirty or even damage or BAD crank sensor the sensor provides reference for spark signal. So this may be your problem. Contact if you need more help. Thanks for using FIX YA

Posted on Jan 24, 2009

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wyatt1582
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SOURCE: 1992 chevy corsica runs rough,stall or dies after stopping

Sounds the EGR valve and EVP sen is bad even if you tested it. The EGR valve cntrols idle and if carbon up will make the car stall or idle high and low (rpms going up and down) This was common on all cars during that time. I would say replace the EGR valve and senosr. This should take care of the problem. One more thing have the fuel pressure check on the car.

Posted on Mar 20, 2009

ifixgms
  • 64 Answers

SOURCE: Mirage Mitsubishi 2000 1.8L Rough Miss when Idle

Might want to look for vacuum leaks. Most misfires that go away with gas are caused by manifold vacuum leaks. The cat code can also be caused by the vac leak. There are different methods to find them and not real easy-but one way is to get a can of carb cleaner spray and spritz around intake areas. When the carb cleaner finds the leak--the car will run good for just and instant. Could be a rubber line or a manifold gasket. Hope it helped. Thanks

Posted on Apr 06, 2009

csmock132
  • 4669 Answers

SOURCE: 1989 GMC 2500 5.7L - engine surges and stalls at idle. Loses power at cruising speed.

Wow you have replaced a lot of stuff. Lets go back to the Fuel pump. When you replaced it did you replace the hose between the pump and the sending unit. These are common for splitting. Have you hooked up a fuel pressure gauge to check what pressure you have? It should be real close to 13 psi and should raise to at least 18 or 19 when you pinch off the return line.

Posted on Jun 02, 2009

SOURCE: stalls while idling and engine

Actually I am hessitant to respond to this one. The problem you are having COULD be many things, however my take is different than the others you seem to have. I believe that you are having timing issues caused by a Crankshaft Positioning Sensor, and/or Cam Positioning Sensor. Thesee are how the computer knows where they are and adjusts timing to make the engine fire at the correct time, thus it is called timing. The computer makes these adjustment is literally THOUSANTHS of a second, and if the sensor is off just a little especially at very high, and very low revolutions you will have a miss, which will at high RPM's "pop" due to it wanting to stall but because of the RPM's keep momentum, and pops but keeps running but at low RPM w/o that momentum, just stalls. I pray this helps you understand WHY I think you may have timing issues and why.

Posted on Mar 22, 2010

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Location nd placement of coil pack spark plugs nd wires in a 2002 chevy impala LS 3.8L V6 nd firing order


Google it. Links won't post but there is tons of info on that engine. Users 3 packs that sit beside each other. Firing order 1 6 5 4 3 2
coils are from front to back 1 4 5 2 3 6

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What is the Wire Order with distributor?


theres no distributor and the firing order for your 3.8 is 1-6-5-4-3-2-the following link shows the coil pack
Buick General Motor 3800 V6 Engine Firing Order DIS IDI ignition timing 3.8 Buick Engine Coil Pack Firing Order Spark Plug Wire Location Which way do the spark plug wires go on & what cylinder is what?
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For the Buick V6 231 3.8 liter turbocharged engine:
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Answers!
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Firing order:
1 - 6 - 5 - 4 - 3 - 2.
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Closest to the back of the car, left to right: 1 - 5 - 3.
Closest to the front of the car, left to right: 4 - 2 - 6.
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My 1996 Taurus. When I press the gas pedal when cold it sputters, lack of power. Once it heats up it runs fine. code p0305


A code P0305 may mean that one or more of the following has happened: 1 Faulty spark plug or wire 2 Faulty coil (pack)3 Faulty oxygen sensor(s) 4 Faulty fuel injector 5 Burned exhaust valve 6 Faulty catalytic converter.
Possible Solutions If there are no symptoms, the simplest thing to do is to reset the code and see if it comes back. If there are symptoms such as the engine is stumbling or hesitating, check all wiring and connectors that lead to the cylinders (i.e. spark plugs). Depending on how long the ignition components have been in the car, it may be a good idea to replace them as part of your regular maintenance schedule. I would suggest spark plugs, spark plug wires, distributor cap, and rotor (if applicable). Otherwise, check the coils (a.k.a. coil packs). In some cases, the catalytic converter has gone bad. If you smell rotten eggs in the exhaust, your cat converter needs to be replaced. I've also heard in other cases the problems were faulty fuel injectors.

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How to change spark plugs 2005 GMC Envoe L6


Below is a brief description of the process, make sure you use AC Delco 43-103 iridium plugs, any other type or manufacturer will not perform well.

Remove the Air Resonator by undoing 2 - 10mm bolts on the left hand side, loosening the clamp around the air intake tube to the right of the mass air flow sensor, and the clamp where the air resonator joins the throttle body. Be sure to detach the mass air flow sensor wire from the resonator by undoing the plastic clip.
Now that you have removed the air resonators you have exposed the top of the coil packs of the 4.2L Inline 6 Engine. Each coil pack is held down by a 10mm bolt. Start one spark plug at a time and work your way from plug 6 (under the firewall) and forward.
With the 10mm socket loosen the bolt which holds the coil pack in place. No need to disconnect the wire there is plenty of play to pull the coil pack up and set it to the side.
Plug 6 is the hardest one due to lack of maneuverability; this is where the breaker bar or pipe comes in handy to loosen the tightness of the plug. Once it is loose you can put the bar or pipe to the side it should not be needed for the rest of the rest of the plugs.
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Repeat above for plugs 6 through 2. Plug 1, closest to the front requires special attention see next step.
Plug 1 is not too hard to remove but does require special directions because there is a plastic wire channel/guard which runs across it. Undo the bolt using the 10mm open ended wrench. Once the bolt is loosened slightly pull up on the coil pack, rotate about 90 degrees to the left while at the same time slightly tilting at a 45 degree angel towards the wind shield to remove the coil pack and clear the wire channel / guard. Now return to step 3 direction when it comes to changing out the spark plug.
Now reassemble. Be sure to tighten the air intake tube clamp on the right, and left where the resonator connects to the throttle body. Tighten down the 2 bolts which hold down the air resonator; don't forget to re-clip the mass airflow sensor wire just behind bolt 2 on the resonator.
Note: Be sure to check the tube which connects from the air resonator into the engine. This tube is located under the resonator on the left in line with plug 1.

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2 Answers

How do you change spark plugs in a 2004 hyundia sonata


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On the 4 cylinder engine, there are two coil packs and two ignition wires, Below each coil pack is a spark plug (#2 and #4 cylinders). The wire from # 2 coil pack goes to #3 spark plug, and the wire from #4 coil pack goes to #1 spark plug.

Photo:

ghost45_15.jpg
Now the 2.7 Lit V6 requires you remove the surge tank (intake manifold) in order to access the spark plugs & wires on Bank 1 (Right Hand side of the engine).

Photo:
ghost45_16.jpg

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3 Answers

Misfire on #4 cylinder


I'm assuming that your symptoms may include:
* the engine may be harder to start
* the engine may stumble / stumble, and/or hesitate
* other symptoms may also be present

A code P0304 may mean that one or more of the following has happened:
* 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

Check this possible solutions:
* If there are no symptoms, the simplest thing to do is to reset the code and see if it comes back.
* If there are symptoms such as the engine is stumbling or hesitating, check all wiring and connectors that lead to the cylinders (i.e. spark plugs). Depending on how long the ignition components have been in the car, it may be a good idea to replace them as part of your regular maintenance schedule. I would suggest spark plugs, spark plug wires, distributor cap, and rotor (if applicable). Otherwise, check the coils (a.k.a. coil packs). In some cases, the catalytic converter has gone bad. If you smell rotten eggs in the exhaust, your cat converter needs to be replaced. I've also heard in other cases the problems were faulty fuel injectors.

Hope helps (remember comment and rate this).

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2 Answers

Firing order for plugs and wires....on a v6 3800 2000 impala


For the 2000 Chevrolet Impala 3.8L V6:

Firing Order:
1-6-5-4-3-2

Cylinders:
.....(back).....
|...2...4...6...|
___________
|...1...3...5...|
.....(front)

Ignition Coil Connections:
(back)
o <---6
___
o <---3
o <---2
___
o <---5
o <---4
___
o <---1
(front)

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

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3 Answers

2002 Impala 3.8l v6 major hesitation


Have someone do a back pressure test on you catalytic converter. I had the same problem and it turned out that my converter was almost completely plugged. I was also getting a check engine light indicating a misfire on cylinder 4. Once the converter was replaced, the problems went away.

Sep 08, 2008 | 2002 Chevrolet Impala

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