PattiMax Posted March 14, 2009 Share Posted March 14, 2009 Are there any thoughts on a 51 Injector Circuit. ECU Flash Code. I was able to get that code from the ECU. The beast would hardly keep running and runs extremely rich until last night when I could not get it running. I do know it has old gas so I'll get some fresh gas in it. I tried to get it started last night to check the the MAF wiring/connection but the battery was shot. The MAF sensor has just been cleaned and seems to be fine when I ohmed it out meaning I didn't get an open reading between A,B and C. The hood is not an issue as it has been open during all of this. The fuel filter was also recently changed. Does the fuel system need to be bled in some special way? I thought I read that here somewhere. Anyway, long story short is that it has mainly been sitting for close to 2 years. I replaced the starter and did a body lift. I also replaced some of the cracked vacuum lines. Link to comment Share on other sites More sharing options...
MY1PATH Posted March 14, 2009 Share Posted March 14, 2009 IIRC the the fuel line has to be "primed" to fill up the volume to the fuel filter and injector rails (injector body in my case) I think this it done by un-plugging the injector harness and turning the key to "run" several times letting the fuel pump run for a few seconds each time and then pluging the injectors back in and cranking it. Link to comment Share on other sites More sharing options...
k9sar Posted March 15, 2009 Share Posted March 15, 2009 make sure your injector connectors are seated well. Link to comment Share on other sites More sharing options...
PattiMax Posted March 16, 2009 Author Share Posted March 16, 2009 make sure your injector connectors are seated well. I looked in what info I have and found each of the connectors for the injectors. But what I can't find or read is the harness connectors for all the injectors. (101E or 102E or 103E or 104E). I found your response k9sar to a post "Need help, trouble codes 21 and 51" but was unable to read the procedure to the connector numbers. Thanks for the help so far. Link to comment Share on other sites More sharing options...
PattiMax Posted March 17, 2009 Author Share Posted March 17, 2009 I also loosened the hose between the rails in hopes that it might bleed any trapped air but I guess not. Worth a shot I guess. Link to comment Share on other sites More sharing options...
Slick Posted March 17, 2009 Share Posted March 17, 2009 $50 says you puked an injector............. Link to comment Share on other sites More sharing options...
k9sar Posted March 17, 2009 Share Posted March 17, 2009 (edited) I looked in what info I have and found each of the connectors for the injectors. But what I can't find or read is the harness connectors for all the injectors. (101E or 102E or 103E or 104E). I found your response k9sar to a post "Need help, trouble codes 21 and 51" but was unable to read the procedure to the connector numbers. Thanks for the help so far. ok... try this (hope you don't have dialup) 1994_FSM section EF page 108 Diagnostic procedure 35 Edited March 17, 2009 by k9sar Link to comment Share on other sites More sharing options...
PattiMax Posted March 17, 2009 Author Share Posted March 17, 2009 ok... try this (hope you don't have dialup) 1994_FSM section EF page 108 Diagnostic procedure 35 Thanks K9sar. Naw, no dialup here, it took about 20 seconds. I'll check it out later tonight as my 03 Max failed to start for me last night. Priorities ya know with it being the wife's car. That is a first for me in 5 years of owning this Max and never had any type of problem. Link to comment Share on other sites More sharing options...
PattiMax Posted March 24, 2009 Author Share Posted March 24, 2009 Thanks K9. That is better and more complete than what I had before. I was able to get it started and it ran very poorly. It will not even idle. I do feel it is more fuel related as I have to keep the gas pedal 1/2 way down to keep it barely running and it is missing something terrible. I'm thinking Slick might be on top of it with the fuel injector issue. I am going to check fuel pressure and rule a few other things out first but have I have so little time to work on it. That is why the delays of reporting back with my findings here. My Maximum ended up being the battery. That is the first time I have seen a car crank as good as it did and still fail to start as it should. I had to be dropping the voltage from the battery just enough that would some how keep it from firing up and running. Another lesson learned. Link to comment Share on other sites More sharing options...
k9sar Posted March 24, 2009 Share Posted March 24, 2009 if it runs like crap, jiggle the MAF sensor connector and wire and see if it makes a difference (while running if possible). I had that issue as well. Link to comment Share on other sites More sharing options...
PattiMax Posted April 25, 2009 Author Share Posted April 25, 2009 Follow up here and it looks like the verdict is in and Slick's the WINNER. But I had a lot of help from the manual from K9sar. I finally got back into checking this issue out and it looks like I have 4 bad fuel injectors. They should ohm out between 10-14 ohms and only 2 did. It's not running yet as I still have to find some affordable injectors now. I will also take a few pics and post of how and where I was able to ohm them out. Once again, Thanks. Link to comment Share on other sites More sharing options...
Taoism Posted April 25, 2009 Share Posted April 25, 2009 Hmm, mine sat for a cpl years before I got it as well. Think I will check the injectors (among other things) before I try to start it the first time when I get the timing belt/tensioner done, just for the hell of it. Link to comment Share on other sites More sharing options...
k9sar Posted April 27, 2009 Share Posted April 27, 2009 Follow up here and it looks like the verdict is in and Slick's the WINNER. But I had a lot of help from the manual from K9sar. I finally got back into checking this issue out and it looks like I have 4 bad fuel injectors. They should ohm out between 10-14 ohms and only 2 did. It's not running yet as I still have to find some affordable injectors now. I will also take a few pics and post of how and where I was able to ohm them out. Once again, Thanks. let me know what you find with respect to cheap injectors. I can most likely do better if you want used ones. I pulled an engine with only 80k miles on it and have the injectors in a baggie in my tool chest. Saving them for a rainy day in case I needed them but I can only imagine needing one or two when the time comes. I'll check the resistance on them to make sure they are good (engine was running great before I spun the bearing so the injectors should be fine). Link to comment Share on other sites More sharing options...
PattiMax Posted May 2, 2009 Author Share Posted May 2, 2009 Where you can ohm out your fuel injectors. (VG30E) Disconnect the middle harness connectors, the two that I disconnected were the bottom two of a group of four connected to the engine control harness. From there you can ohm out the harness as well as each of your injectors. The picture shows which terminals to put your probes on to check each cylinder's injector. Each should ohm out between 10-14 ohms. I hope this is clearer than mud. ohm out injectors Link to comment Share on other sites More sharing options...
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