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P0304 Diagnostic Trouble Code Discussion for July 2008

Cylinder 4 Misfire Detected


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Trouble Ticket Help Requests for DTC P0304
Help Request Posted
2002 Audi A4 1.8L Poor Idle Quality, Hesitation, Misfire, MIL Lamp on VIN: WAULC68E52
P0304: cyl.4 misfire detected. Hi Guys ! This car drive us nuts for more than a week. The vehicle first came in for random misfire and cyl.2 +4. No problem ! We replace all 4 ign. coils & plugs. Test drive over 5 mls with no complain .Customer picked up car & call back after a week ...
July 02, 2008
1997 Ford Explorer Eddie Bauer 4.0L Poor Idle Quality, Misfire VIN: 1FMDU32E9V
P0304: misfire cyl 4. Hello FORD techs: This explorer came in with check engine light on and the code 301 and 304 stored. This truck will misfire badly only when cold or warming up. Once it gets hot it will not misfire anymore. I went after the lower intake o-rings. I sprayed carb...
July 07, 2008
1997 Ford Explorer Eddie Bauer 4.0L Poor Idle Quality, Misfire VIN: 1FMDU32E9V
P0304: misfire cyl 4. Hello FORD techs: This explorer came in with check engine light on and the code 301 and 304 stored. This truck will misfire badly only when cold or warming up. Once it gets hot it will not misfire anymore. I went after the lower intake o-rings. I sprayed carb...
July 08, 2008
2003 Ford Escape XLT 3.0L Misfire VIN: 1FMYU93193
P0304: Misfire cyl 4. Hi folks I have this Escape with two dead cylinder, 4 and 6. I found one other post that had the same problem as I. to me, it sounded like the upper intake was leaking so I replaced the upper and lower intake gaskets. While I had the intake off I started the t...
July 15, 2008
2002 Chevrolet S10 LS 4.3L Misfire, MIL Lamp on VIN: 1GCDT13W62
P0304: Cylinder 4 Misfire Detected. truck came in with a misfire code po304. gave it a complete tune up and it returned 2 days later with same code. bulletins said possible cpi. changed the spider assembly to the newer updated version. all seemed ok at the time checked for misfire counts at idle...
July 17, 2008
2003 Ford Escape XLT 3.0L Misfire VIN: 1FMYU93193
P0304: Misfire cyl 4. Hi folks I have this Escape with two dead cylinder, 4 and 6. I found one other post that had the same problem as I. to me, it sounded like the upper intake was leaking so I replaced the upper and lower intake gaskets. While I had the intake off I started the t...
July 17, 2008
1997 Chevrolet Tahoe LS 5.7L Misfire VIN: 1GNEC13RXV
P0304: Cylinder 4 Misfire Detected. Vehicle came in for running bad and misfire. Found pressure regulator leaking (of course) so we replaced injector and we found #4 spark plug fouled with oil to the point that you couldn't see the electrode. We replaced plugs, cap and rotor and now instead of h...
July 21, 2008
1998 Toyota Corolla CE 1.8L Poor Idle Quality, Hesitation, Misfire VIN: 2T1BR12E8W
P0304: Cylinder 4 Misfire Detected. ... weeks ago, came back, with mil-on, code P0304, change spark-plug and wire, check injector, #4 out of spec, replaced injector, after that, the car run at 1100rpm on idle, dealer says to replace ecm, replace it didin't solved the problem. check the IAC, IAC ...
July 25, 2008
1999 Saab 9-3 SE 2.0L MIL Lamp on VIN: YS3DF78N5X
P0304: misfire number 4. ... knows something about a saab. this car came from another shop that changed the ignition casette module a while ago because of a no start. now under a medium to heavy acceleration the check engine light starts flashing and it sets a p0304 but it doesnt seem...
July 29, 2008
2002 Audi A4 1.8L Poor Idle Quality, Hesitation, Misfire, MIL Lamp on VIN: WAULC68E52
P0304: cyl.4 misfire detected. Hi Guys ! This car drive us nuts for more than a week. The vehicle first came in for random misfire and cyl.2 +4. No problem ! We replace all 4 ign. coils & plugs. Test drive over 5 mls with no complain .Customer picked up car & call back after a week ...
July 02, 2008
1997 Ford Explorer Eddie Bauer 4.0L Poor Idle Quality, Misfire VIN: 1FMDU32E9V
P0304: misfire cyl 4. Hello FORD techs: This explorer came in with check engine light on and the code 301 and 304 stored. This truck will misfire badly only when cold or warming up. Once it gets hot it will not misfire anymore. I went after the lower intake o-rings. I sprayed carb...
July 07, 2008
1997 Ford Explorer Eddie Bauer 4.0L Poor Idle Quality, Misfire VIN: 1FMDU32E9V
P0304: misfire cyl 4. Hello FORD techs: This explorer came in with check engine light on and the code 301 and 304 stored. This truck will misfire badly only when cold or warming up. Once it gets hot it will not misfire anymore. I went after the lower intake o-rings. I sprayed carb...
July 08, 2008
2003 Ford Escape XLT 3.0L Misfire VIN: 1FMYU93193
P0304: Misfire cyl 4. Hi folks I have this Escape with two dead cylinder, 4 and 6. I found one other post that had the same problem as I. to me, it sounded like the upper intake was leaking so I replaced the upper and lower intake gaskets. While I had the intake off I started the t...
July 15, 2008
2002 Chevrolet S10 LS 4.3L Misfire, MIL Lamp on VIN: 1GCDT13W62
P0304: Cylinder 4 Misfire Detected. truck came in with a misfire code po304. gave it a complete tune up and it returned 2 days later with same code. bulletins said possible cpi. changed the spider assembly to the newer updated version. all seemed ok at the time checked for misfire counts at idle...
July 17, 2008
2003 Ford Escape XLT 3.0L Misfire VIN: 1FMYU93193
P0304: Misfire cyl 4. Hi folks I have this Escape with two dead cylinder, 4 and 6. I found one other post that had the same problem as I. to me, it sounded like the upper intake was leaking so I replaced the upper and lower intake gaskets. While I had the intake off I started the t...
July 17, 2008
1997 Chevrolet Tahoe LS 5.7L Misfire VIN: 1GNEC13RXV
P0304: Cylinder 4 Misfire Detected. Vehicle came in for running bad and misfire. Found pressure regulator leaking (of course) so we replaced injector and we found #4 spark plug fouled with oil to the point that you couldn't see the electrode. We replaced plugs, cap and rotor and now instead of h...
July 21, 2008
1998 Toyota Corolla CE 1.8L Poor Idle Quality, Hesitation, Misfire VIN: 2T1BR12E8W
P0304: Cylinder 4 Misfire Detected. ... weeks ago, came back, with mil-on, code P0304, change spark-plug and wire, check injector, #4 out of spec, replaced injector, after that, the car run at 1100rpm on idle, dealer says to replace ecm, replace it didin't solved the problem. check the IAC, IAC ...
July 25, 2008
1999 Saab 9-3 SE 2.0L MIL Lamp on VIN: YS3DF78N5X
P0304: misfire number 4. ... knows something about a saab. this car came from another shop that changed the ignition casette module a while ago because of a no start. now under a medium to heavy acceleration the check engine light starts flashing and it sets a p0304 but it doesnt seem...
July 29, 2008