3pe Posted August 10, 2013 Share Posted August 10, 2013 05 lgt wagon mt 222k miles. Drove 15 miles over to a friends on the way to pick up my head and itbs for another car from getting ported. I ran pretty hard over there and pulled in the driveway allowed the car to stay running while going inside to let the turbo cool down. Came back out after 10 min jumped in and him and I left to go get my parts. By the time I made it out the driveway the car started the check engine light flashing. Gimped it back and pulled codes at his his house. Got codes for misfire cyl 2 and 3. This happened last week with a misfire on 2-3-4 and I cleaned maf and it cleared up. This time I cleaned maf to no avail, cleaned it again nothing. Pulled intercooler and all couplings to check for boost leaks nothing, if I idle the throttle while it diesels it pulls 15-20 in hg. Decided to gimp back home to allow it to cool and pull plugs. So while I wait for this hot bugger to cool and pull plugs, any idea what could cause misfire on two cylinders opposite each other? It won't hardly idle and only codes are p0302 p0303. Link to comment Share on other sites More sharing options...
McDowell Performance Tunin Posted August 10, 2013 Share Posted August 10, 2013 Could be a number of things: Plugs (sounds like you're going to check them) With that many miles, when were they last changed? Coil pack (which you can swap with 1 and 3) Injectors (which you can also swap, just do a search for the steps for injector swapping as it needs to be done correctly) I would check those items first. Do you have a laptop, or Accessport for logging? www.facebook.com/mcdowelltuning [sIGPIC][/sIGPIC] Click Here for Stage1, Stage2 and Stage3 Tuning and eTuning Info Link to comment Share on other sites More sharing options...
3pe Posted August 11, 2013 Author Share Posted August 11, 2013 After cool down pulled coil packs and plugs to find one coil pack connector had backed out. But brings in a new question why did it throw a code for two cylinders. Are the coil packs grounded to one another in a chain series? Car is running correctly again now. Plugs are clean with no issues and 10k on them. Link to comment Share on other sites More sharing options...
JmP6889928 Posted August 11, 2013 Share Posted August 11, 2013 These cars eat coil packs. I had an issue with #3 and changed the pack (now having changed all 4 at 88K miles) and it came back. I took all 4 of them out, put a slight twist on the 3 pins where the plug goes to make sure they had good contact and the issue has gone away and not returned in over 4K miles. My car sits for extended periods in the garage and seems to manufacture it's own problems without any provocation (just had front O2 go bad from sitting) so, check those pins. Link to comment Share on other sites More sharing options...
McDowell Performance Tunin Posted August 11, 2013 Share Posted August 11, 2013 These cars eat coil packs. I had an issue with #3 and changed the pack (now having changed all 4 at 88K miles) and it came back. I took all 4 of them out, put a slight twist on the 3 pins where the plug goes to make sure they had good contact and the issue has gone away and not returned in over 4K miles. My car sits for extended periods in the garage and seems to manufacture it's own problems without any provocation (just had front O2 go bad from sitting) so, check those pins. Exactly. With the amount of miles your car has, it could be more than one coil. Also, make sure you have the correct, high quality iridium plugs gaped and installed correctly. If you still have misfires, could be an injector issue, or worse case scenario, a burn valve or similar. www.facebook.com/mcdowelltuning [sIGPIC][/sIGPIC] Click Here for Stage1, Stage2 and Stage3 Tuning and eTuning Info Link to comment Share on other sites More sharing options...
3pe Posted August 12, 2013 Author Share Posted August 12, 2013 Oddly enough mine was just the plug on the coil pack fell off from doing a change a few weeks ago and not getting it fully seated. That said I am in the process of replacing as much of the electronics as possible slowly, I actually waiting for the engine to pop for rebuild and would like upgraded coil packs and new sensors to have for the new motor when dropped in. Figure ill give this motor it's chance to shine till then. Other than medium oil use only present from blow by and high rpm boost it runs amazing. Every time something has failed on this car it's been a easy issue, such as dirty maf, coil plug wire, blow intercooler pipe etc Link to comment Share on other sites More sharing options...
xt2005bonbon Posted August 12, 2013 Share Posted August 12, 2013 So wait, you got 222k on original turbo and engine? If yes, congrats! How about your clutch? stock? how many times have you changed it? just curious.. Link to comment Share on other sites More sharing options...
iv_05gt Posted August 12, 2013 Share Posted August 12, 2013 Check your AVCS readings if you have an access port. It could be your Oil Control valves, and your intake manifold - tgv valve gaskets. Link to comment Share on other sites More sharing options...
3pe Posted August 12, 2013 Author Share Posted August 12, 2013 My manifold gaskets do have there fair share of oil seeping from one side. Yes actually it's 223k now on turbo motor, it uses maybe 1/4 quart 500 miles rotella t6 and motorkote, turbo died 3k ago, clutch is on it's last leg releasing late but still gripping, axles are in the back of the car waiting to be swapped in do to torn boots, end links are shot, crank pulley needs replaced as I noticed it has a small wobble, intercooler couple is iffy, but other than that healthy engine. I'm tempted to start increasing power substantially but I will slowly mod it, first mod is new up pipe, down pipe and single exhaust. I test fitted my spearco 750hp wta intercooler the other day and looks like a perfect fit, so that will be switched our soon, suspension will be swapped for strut spring combo soon as well. Link to comment Share on other sites More sharing options...
3pe Posted August 12, 2013 Author Share Posted August 12, 2013 Thought this may interest you guys Link to comment Share on other sites More sharing options...
xt2005bonbon Posted August 12, 2013 Share Posted August 12, 2013 My manifold gaskets do have there fair share of oil seeping from one side. Yes actually it's 223k now on turbo motor, it uses maybe 1/4 quart 500 miles rotella t6 and motorkote, turbo died 3k ago, clutch is on it's last leg releasing late but still gripping, axles are in the back of the car waiting to be swapped in do to torn boots, end links are shot, crank pulley needs replaced as I noticed it has a small wobble, intercooler couple is iffy, but other than that healthy engine. I'm tempted to start increasing power substantially but I will slowly mod it, first mod is new up pipe, down pipe and single exhaust. I test fitted my spearco 750hp wta intercooler the other day and looks like a perfect fit, so that will be switched our soon, suspension will be swapped for strut spring combo soon as well. So that's 220k on original turbo and motor. ~ 2 quarts per OCI. I guess it's acceptable with this mileagestock clutch for 220k. If yes, I can't believe your TOB lasted that long. This is awesome! Link to comment Share on other sites More sharing options...
3pe Posted August 12, 2013 Author Share Posted August 12, 2013 Me 2, 90% highway miles 240 mile commute everyday = 5th gear drive no clutch cool runnings. Clutch will be done as soon as engine can't handle the play anymore Link to comment Share on other sites More sharing options...
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