dividmal Posted July 18, 2006 Share Posted July 18, 2006 Hey guys. I'm new here and I sure hope somebody can help me. I just changed my auto trans pathy to a standard. When I did it, I pulled the engine and trans out of the vehicle. Now that I have every thing back in the truck, it won't start. I can get it to turn over and if I spray fuel in the intake it will start and sputter as long as I'm spraying. It's like the injectors are not spraying. I'm pretty sure that I've hooked everything back up. I was very cautious when I disconected the wiring. I friend of mine said something about "resetting" the computer. Is this something that needs to be done, and if so, how? Thanks Guys, Dan Link to comment Share on other sites More sharing options...
94extreme Posted July 18, 2006 Share Posted July 18, 2006 here is the info on the ECU http://www.nissanpathfinders.net/forum/index.php?showtopic=21 sounds to me like your fuel pump isn't pumping fuel.. can you hear it buzz when you turn the key to ON? Link to comment Share on other sites More sharing options...
Casey.T Posted July 18, 2006 Share Posted July 18, 2006 Did you reverse the fuel lines? (Credit for this goes to ThunderBox and Slick) Link to comment Share on other sites More sharing options...
vengeful Posted July 18, 2006 Share Posted July 18, 2006 I'm guessing some electrical connector was missed. Link to comment Share on other sites More sharing options...
GrimGreg Posted July 18, 2006 Share Posted July 18, 2006 I'm guessing some electrical connector was missed. Or a sensor got busted on the reinstall maybe. Link to comment Share on other sites More sharing options...
unccpathfinder Posted July 19, 2006 Share Posted July 19, 2006 Did you reverse the fuel lines? (Credit for this goes to ThunderBox and Slick) when i worked (or was borrowing their garage to change the timing belt after breaking it and discovering my damages while pulling parts for them when they needed them) at a junkyard i saw this happen...it would run like a champ off of ether but nothing and i was like swap the fuel lines and they swore they were right and i'll be damned if it didnt crank up after they swapped them... so def worth a check and i'd also check fuses and make sure u hear the fuel pump priming up...how long did the gas sit? did u use stabil? but i'd go back and recheck everything... Link to comment Share on other sites More sharing options...
Slick Posted July 19, 2006 Share Posted July 19, 2006 Did you reverse the fuel lines? (Credit for this goes to ThunderBox and Slick) i freely admit... i did this yes.....can cause that exact issue..... easily done too Link to comment Share on other sites More sharing options...
Slick Posted July 19, 2006 Share Posted July 19, 2006 also.. check to make sure all vaccum lines, and as stated above all sensors are plugged in..... and didn't i read somewhere that if you do a auto to manual swap you also need the ECU for the manual?? -study- Link to comment Share on other sites More sharing options...
Casey.T Posted July 19, 2006 Share Posted July 19, 2006 i freely admit... i did this yes.....can cause that exact issue..... easily done too I had mine crossed, then remembered that post and double check em..... Link to comment Share on other sites More sharing options...
dividmal Posted July 19, 2006 Author Share Posted July 19, 2006 The fuel pump does pump. I put some gas in a spray bottle and sprayed it into the intake and it ran so long as I was spraying. If the problem is something as stupid as me crossing the fuel lines, I'm gonna kick my own a$$. I'll check this tonight. As for changing the ECM with the trans, I heard it was only necassary when you went from standard to auto. I really appreciate all the feedback from you guys. It's great to know that there are people out there you can count on these days. Dan Link to comment Share on other sites More sharing options...
unccpathfinder Posted July 19, 2006 Share Posted July 19, 2006 im actually in the process of putting a auto wiring harness in my manual truck and from what i guathered at least...the part #'s on an auto ecu is MECM-v277 and an manual is MECM-v260 (it might be vice versa) also when going from auto to manual on the wiring harness u need to change out the harness that goes from the main to the tranny...i think disconnect the shift box thats located in the rear of the truck and change out the cruise control stuff (it goes to the fuseblock up to the vent on the drivers side and to the gages) and theres some other things im sure i disconnected but i looked at the harness to the diagram to see the diff between the manual and auto harnesses and thats what i found...once i have obtained all the pieces im going to give it a whirl and hope it works.... Link to comment Share on other sites More sharing options...
88pathoffroad Posted July 20, 2006 Share Posted July 20, 2006 The ECU may be waiting for the main relay to be turned on by the clutch switch or something, I'd have to eyeball the wiring diagram to see what controls what. Did you install a clutch switch with your new pedal and all? If the main relay doesn't come on the fuel pump relay won't come on either... Link to comment Share on other sites More sharing options...
unccpathfinder Posted July 20, 2006 Share Posted July 20, 2006 yea the clutch switch was another thing i was going to have to add on Link to comment Share on other sites More sharing options...
dividmal Posted July 21, 2006 Author Share Posted July 21, 2006 Yeah, guess what guys. I had the fuel lines crossed. I switched them and it started right up. I feel like such an idiot. It runs a little rough though. It's been sitting for a year and a half. These things are tough. Don't let anybody tell you otherwise. I got in it and drove it up and down my street. I can't wait to tune it up and get it back on the road full time( and off the road for that matter). SWEET. Dan PS. Thanks again for all your help. Link to comment Share on other sites More sharing options...
unccpathfinder Posted July 22, 2006 Share Posted July 22, 2006 ok now i need more details..... so u went from auto to manual...from ure profile thats a 91...and ure saying u didnt change anything else? did u pull the shift box or anything like that or switch wiring harnesses anywhere? my project is: putting a 95's (auto) harness with all of its components into my 87(manual)... so i was thinking i'd have to swap the ECU's add the clutch and tranny harnessa and possibly the harness to the gages and fuse block but it seems like u did not have to do that?... does any1 know the differences in the 91 and 95s... Link to comment Share on other sites More sharing options...
dividmal Posted July 22, 2006 Author Share Posted July 22, 2006 All I changed was the transmission with the clutch assembly with the flywheel on the engine(they are different), the clutch pedal assembly with all the lines, the wiring harness that goes to the transmission from the engine compartment( it's like 4 wires if i remember correctly), and I believe the speedometer cable is different( I haven't gotten that far yet but I can't get it in the trans). I don't know what problems you'll run into changing a manual to an auto. I believe you will have to change your ECUs. Let us know how it goes. Dan Link to comment Share on other sites More sharing options...
unccpathfinder Posted July 23, 2006 Share Posted July 23, 2006 no im going auto harness to manual...but im going from 95 to 87 but doing everything except for the ABS b/c it sucks IMO... well that seems to be promising...i got the old motor yanked today it'll prob be 2 weeks B4 i get the other 1 in... and yea i think its 4 wires all of which are minor detail...4wd light, reverse light, speedo and something else...and i think i could use the clutch assembly i have in there right now im just not sure on the connectors from 87 to 95 i know theres an extra sensor but i think thats b/c i have cruise in my 95 and my 87 doesnt...but this gives me a lil more confidence in my operation... if all goes well i think it'll be friggin sweet with the 95 dash and a lil more power in the 2 dr...esp so i can move onto some lift then lockers, and some more serious trails but im gonna keep my fingers crossed and hope this all works out before dec...and i still have to put the drivetrain out of my 75 trailduster into my 64 scout before then too...too much with no time Link to comment Share on other sites More sharing options...
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