I went to Advance Auto Parts store today to have them read the codes because my CEL is on my 99 Accord EX V-6 w/147,00 miles.

This is what I got. P0301 cylinder 1 misfire, P0302 cylinder 2 misfire, P0306, cylinder 6 misfire. P0300 random multiple cylinder misfire. P1399 Manufacturer control ignition system or misfire. P0401 EGR flow insufficient.

Any help on exactly where to go to chase these down? I am thinking coil or cap or wires, etc.What about the EGR? Any advice there would be helpful too.

Thanks,
Dale

 

EGR is listed as one of the possible symptoms for your misfire codes, plus you have a P0401 code (EGR). The egr is a good place to start.

The link below has the TSB for a 99 V6 as a pdf, so you can download a view. Sorry that I referenced another forum, but we can't upload pdfs on here.

http://www.driveaccord.net/forums/sh...t=tsb+egr+1999

 

Check your wires at night w/ some water sprayed liberally over the wires. If you see a lot of sparks jumping around, the wires need to be replaced. Is this engine a distributor ignition or Coil Over Plug (COP) w/o a distributor?

EGR insufficient flow means the ECU commanded EGR valve lift and was unable to detect a corresponding change in engine manifold pressure. This usually means blocked EGR passages. Since EGR valve has a sensor, the commanded lift was verified. Another code is set if valve doesn't move when commanded. Insufficient EGR flow would not be expected to cause so much missing. You may have more than one problem here.

good luck

 

Thanks for your help, guys. I will download the TSB and check the plugs as instructed. I will also clean and check the EGR system.

Dale

 

hi guys just had my 2000 accord serviced today and new front brakes done too,my malfuntion light had came on a few days ago also so got it scanned and came back with code of p1257 or 1259 something to do with variable valve timing,any help with this problem will be much appreciated.

 

A P1259 is for the vtec, first thing. Check the oil level.

Is this car new to you?

 

well just been serviced mate and my mechanic said he took very little oil out of car when doing the oil change so yes the oil level would have been low. Only had car two weeks its done 130k but still runs really well its a 2.0i se exec with vtec.

 

This code could be left over from when it was low, did he reset/clear the codes when he checked them?

 

96 Honda accord, misfire cylinders 2 &4. The car misfires at higher rpms. I replaced plugs, wires, cap, rotor, egr, fuel filter, and the egr silanoid. All seemed to help it but yEt stI'll the check engine light comes on and flashes and still hear the misfire. Anybody have any info on this subject?

 

Also. Code for insunificant egr air flow