 no fire |
 Apr 17, 2012 - 1:11 PM
|
 
|
|
Enthusiast  Joined Feb 29, '12 From mississippi Currently Offline Reputation: 0 (0%)  |
1995 toyota celica st usdm
i just reinstalled my 7afe after ripping out the ecu wiring harness and motor replaced the block with a jdm 7afe and used my head and intake manifold of my stock usdm had the head reseated and reserved installed it all back in and now i have no spark? i had some spark when i used the jdm ecu but with my stock ecu it didnt fire at all the jdm ecu made the the ground wire on the passenger side burn up where the wire was showing so i replaced it but now it didnt wanna fire at all. i know the jdm ecu was for coil packs but i thought i could try it anyways hopefully i didnt f something up what do i need to do? replace ECU and Wiring harness and distributor all at once and try to start it up again? i really dont wanna have to buy anything i dont need i did find a guy with a 94 celica st that said he would sell me his wiring harness and ecu for 150 buck i need some help thanks jdm engine install  my old ecu no spark after reinstall  Jdm ecu sparked at first but after i continued to try and start it it died  the engine after i put my old head back on with distributor  another pic  another pic 
|
 |
Replies
|
Apr 19, 2012 - 11:43 PM
|
|
 Enthusiast Joined Oct 29, '11 From Haltom City, Texas Currently Offline Reputation: 1 (100%) |
Well to be honest I ran a 10 guage wire from the white check connector to a bolt on the intake manifold once I found there was no continuity. It worked great but I didnt trust the connection to the check connector( I just crammed the wire in there). Also I reattached the ground wire to the intake so the problem was solved.
If its simpler for you- with the ecu completely disconnected, turn the ignition on and test for 12 volts between the pink and brown wire, brown on the 26 pin and pink on the 12 pin connector. Make sure to spray some cleaner when you reattach the ground to the intake(oil kills electrical connections) and get it to bite into the metal real well. Ive had the ground wire from the alternator valvecover/alternator bracket to the pass fender(5sfe location of the wire that burnt on you)try to burn up but that was because an alternator wire frayed. I think the intake to computer ground would burn first since it is a smaller gauge This post has been edited by Special_Edy: Apr 19, 2012 - 11:51 PM |
Posts in this topic
stormmage88 no fire Apr 17, 2012 - 1:11 PM
Special_Edy The ECU is grounded to the intake manifold. There ... Apr 17, 2012 - 1:58 PM stormmage88 yep there is no check engine light Apr 17, 2012 - 2:48 PM Special_Edy Check the power and ground. The brown wire for gro... Apr 17, 2012 - 3:23 PM stormmage88 there are Two brown wires... Apr 17, 2012 - 4:03 PM Special_Edy They are both the same, they run together later in... Apr 17, 2012 - 6:07 PM stormmage88 so.... what happens to a ecu if you forget to unpl... Apr 18, 2012 - 9:31 PM stormmage88 i tested for a positive current and i was getting ... Apr 19, 2012 - 4:37 PM Special_Edy That check connector has all ground wires in it I ... Apr 19, 2012 - 8:56 PM stormmage88 im going out side to check them now stay online lo... Apr 19, 2012 - 9:29 PM stormmage88 http://buy1.snapon.com/catalog/item.asp?P6...amp;d... Apr 19, 2012 - 9:43 PM stormmage88 is it possible that the jdm ecu when i tried to st... Apr 19, 2012 - 9:53 PM Special_Edy They all run together so it wont matter if you tes... Apr 19, 2012 - 10:01 PM stormmage88 all i know was the ground wire from the intake man... Apr 19, 2012 - 10:09 PM stormmage88 if that doesnt work could i just run a ground wire... Apr 19, 2012 - 10:22 PM stormmage88 it started right up after i ran a ground straight ... Apr 20, 2012 - 12:03 AM
Special_Edy No problem man. Glad I could help save you the hea... Apr 20, 2012 - 12:45 AM |
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
| Lo-Fi Version | Time is now: December 16th, 2025 - 12:25 PM |