Happy 2009 everyone,
mine is starting out with a chronic problem that got worse. As some of you remembered I had a post titled " CYLINDER 5 MISFIRE " and I recieved alot of help on it. I changed the plug and wire and it fixed it for about 2 wks then while entering the hwy 1 morning i accelerated hard to merge after the passing gear kicked in and the truck was accelerating the truck started jerking as if a rev limiter was kicking in. I got off the gas then resumed and the truck leveled out. I tried it again but this time the surging and bucking did not occur. Once I got to my destination I parked the truck for a few hrs. Once I restarted it to leave I noticed a "MISS" then the CEL came on after checking the codes 3 came out " MULTIPLE/RANDOM CYCLINDER MISFIRE, CYCL 5 MISFIRE, AND CYL 6 MISFIRE. I checked the fuel pressure and it was 49 PSI, changed the rest of the plugs, cap, rotor, and wires. Reset the light and erased the codes and tried it again.......SAME CODES. I am at wits end here and I don't want to spend alot of money on " HITS AND MISSES " any suggestions? I really miss driving my truck. Thanks!

 

Get your cat pressure tested.

 

Check the coil too. LOL! Nice sig VW.

 

Well I know my cat is crappy and it's on the list to be changed but will this cause this? Also how would I go about doing this, checking cat pressure, ?

 

the coil "tip" needed cleaning when when I changed the spk plug wires. it was a little corroded but still working.

 

Best thing to do is go to a muffler shop and have them test it.

 

and the pressure should be?????????????

 

They will know what to do.

 

Yes, they will know what to do. Pressure should be Zero.

 

OK Thaks! Now what about fuel injectors poss being clogged? Some of the other members stated that the fuel rails are notorious for having rust accumulate in them.