scrapdaddytatum Posted January 24, 2008 Share Posted January 24, 2008 ok so the car is not mine 99 forester came in with blown motor(rod knock BAD) had check engine light, abs light on swaped in a nice 40k unit, clean motor put motor in, new fuel filter, plugs, wires,pcv,air filter do the usual warmup, no check engine light good exhuast flow(no pluged cat) heat kicked in nice and engine warmed up nice shut it off and then fired it up to drive it stumbles like a rabid dog, backfires, argues then will run great, then it will crap out what i know swaped coil-nada new wires plugs-nada swaped/adjusted TPS-nada idle control clean-nada checked intake and exhuast-nada fuel preasure is 40psi during stumble-nada no check engine light im really confused it WILL run, and great, when its running right its full of power and responsive, smooth idle but nothing i do seems to make it right HELP PLEASE!!!! Quote Link to comment Share on other sites More sharing options...
EVOthis Posted January 24, 2008 Share Posted January 24, 2008 igniter? Quote Link to comment Share on other sites More sharing options...
scrapdaddytatum Posted January 24, 2008 Author Share Posted January 24, 2008 i feel stupid whats the ignitor??? Quote Link to comment Share on other sites More sharing options...
OB99W Posted January 24, 2008 Share Posted January 24, 2008 i feel stupidwhats the ignitor??? See http://endwrench.com/images/pdfs/DirectIgnition.pdf There are errors in the PDF -- in the "Ignition Coil Testing" section, the terminal numbers listed are reversed between the primary and secondary; however, the diagram is labeled correctly. Quote Link to comment Share on other sites More sharing options...
Skip Posted January 24, 2008 Share Posted January 24, 2008 Howdy J, it's the devise located in the middle of the firewall that sends the trigger pulses to the coil pack. Evo, I thought this at first also, but I believe he would get a CEL for misfire if this or the coil pack was the issue. J, do you know how old the front 02 sensor is? Did you use the original intake manifold and the original sensors? (i.e. crank, cam, CTS) Quote Link to comment Share on other sites More sharing options...
scrapdaddytatum Posted January 24, 2008 Author Share Posted January 24, 2008 no ignitor in usual place. i now what you speak of, but there isnt one in that place also intake and sensors are from new motor i have some sensors from old motor, no idea on o2 Quote Link to comment Share on other sites More sharing options...
Skip Posted January 24, 2008 Share Posted January 24, 2008 Possible the ignitor is mounted with the coil pack as seen on page 5 of OB99W's link. The knock sensor also comes to mind. This year still has a MAF as I believe they went to the MAP system in 2000. Since you have most of these, it may be a case of thowing the other parts you have at it. McBrat just had a similar problem with an EJ22T (recent post) turned out to be the 02 sensor. Why no CEL is a mystery. Quote Link to comment Share on other sites More sharing options...
hohieu Posted January 24, 2008 Share Posted January 24, 2008 Here's a pdf that outlines the testing procedure for the updated coil/igniter assembly with 4 spades at the primary side. Quote Link to comment Share on other sites More sharing options...
hohieu Posted January 24, 2008 Share Posted January 24, 2008 Hopefully, the attachment shows up this time. Quote Link to comment Share on other sites More sharing options...
hohieu Posted January 24, 2008 Share Posted January 24, 2008 Ah, here it is. Quote Link to comment Share on other sites More sharing options...
hohieu Posted January 24, 2008 Share Posted January 24, 2008 Sorry, last try here. MSA8_Ignition Coil and Igniter Assembly Service.pdf Quote Link to comment Share on other sites More sharing options...
idosubaru Posted January 24, 2008 Share Posted January 24, 2008 might be good to give exactly what the old (which we already know) and new motors are from. year, vehicle, auto/manual. Quote Link to comment Share on other sites More sharing options...
WAWalker Posted January 24, 2008 Share Posted January 24, 2008 Take a look at the fuel trims when problem is occurring. Quote Link to comment Share on other sites More sharing options...
scrapdaddytatum Posted January 24, 2008 Author Share Posted January 24, 2008 car is 99 forester auto donor is the same 1 year engine car thing fuel trims were peaking im swaping front o2 now Quote Link to comment Share on other sites More sharing options...
WAWalker Posted January 24, 2008 Share Posted January 24, 2008 Good plan. Quote Link to comment Share on other sites More sharing options...
scrapdaddytatum Posted January 24, 2008 Author Share Posted January 24, 2008 update i think the front o2 did the trick did a fresh restart from cold with a battery disconect did its relearn fine, everything normal test drive was good too no problem at all i put it in the yard to cool off and im oging to take a cold test drive in an hour to see if its fixed for good Quote Link to comment Share on other sites More sharing options...
scrapdaddytatum Posted January 24, 2008 Author Share Posted January 24, 2008 replacing cat now Quote Link to comment Share on other sites More sharing options...
scrapdaddytatum Posted January 24, 2008 Author Share Posted January 24, 2008 update, front o2, both cats, still have issue now it has to warm up before it will let the motor RUN can go out and drive it, and for about 10 minutes it runs bad and slowly gets better, then it runs fine great power, full rev range no CEL light ever ????????????????????????????????????? Quote Link to comment Share on other sites More sharing options...
WAWalker Posted January 24, 2008 Share Posted January 24, 2008 What are the fuel trim numbers doing now? Quote Link to comment Share on other sites More sharing options...
scrapdaddytatum Posted January 25, 2008 Author Share Posted January 25, 2008 not being right, i think the rear o2 heater has failed and is sending the wrong signal till warm, any body owant to confer???? Quote Link to comment Share on other sites More sharing options...
WAWalker Posted January 25, 2008 Share Posted January 25, 2008 The rear O2 sensor is primarily if not totally for catalyst monitoring, and will not affect drivability like you are experiencing. Should throw a code for O2 heater. Can you look at Amp draw on the heater with your scan tool? What are the fuel trim #'s? Quote Link to comment Share on other sites More sharing options...
scrapdaddytatum Posted January 25, 2008 Author Share Posted January 25, 2008 well my monitor is a bit on the fritz, so icant give exacts, but lean, not rich, fuel presure is good, im guessing fuel is about 9.1 maybe less, so real lean Quote Link to comment Share on other sites More sharing options...
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