Engine Will Not Start December 06, 2008, 01:14:50 PM Well guys I have installed the 87 5.0 into my 88tbird. I have the 88 5.0 harness and computer installed correctly, and all vacuum lines connected as they should be(i think). I'm getting spark, fuel pressure, and power to the starter. The engine turns over and starts but dies right away. The gas seems to be okay. Anyone have any ideas what to check? Quote Selected
Engine Will Not Start Reply #1 – December 06, 2008, 01:59:24 PM I'd run codes, based on what you say I might suspect the TFI module or it's wiring. It sounds like when the TFI switches from start mode to CCD (run) mode is where things are going wrong. Sometimes pulling the spout connector confirms this. Quote Selected
Engine Will Not Start Reply #2 – December 06, 2008, 02:39:11 PM alright I had an extra one, so I swapped them and have the same problem. I'm wondering maybe if my distributor was repalced and put in backwards, so all the plug wires would be backwards too. I know my 3.8 was like that. I'll have to check that too. I was thinking the computer might be junk too, but I don't know.Anyone else have any other suggestions? Quote Selected
Engine Will Not Start Reply #4 – December 06, 2008, 06:14:15 PM first off, this should be in either engine tech or engine swapping. Whats your fuel pressure? what did you use for lines to convert it? did you swap out the fuel pump? is your fuel pump relay coming on? do you have voltage at your relay? what wiring harness did you use? What about codes?Without any help from yourself we can't help you. Quote Selected
Engine Will Not Start Reply #5 – December 06, 2008, 06:15:07 PM oh, and whats your timing set at? I would have checked the firing order first... Quote Selected
Engine Will Not Start Reply #6 – December 06, 2008, 06:22:04 PM I used the SEFI High pressure hose to connect the lines. I'm not sure of a number for fuel pressure, but I am getting it. I can't hear the relay but its got to be working, if i crank over the car and it "starts" if I hit the fuel bleed nosle it does come out. Where is the relay to check the voltage at? I used a 88 cougar v8 harness and computer. Its an 87 tbird 5.0. I haven't gotten a check engine light, no way to check for codes. The only access i have to a code reader is at my brother work, but the car doesn't run. The fuel pump is the one from my parts car. That was swapped in a while ago. The timing is set at what is was when I pulled the motor, it ran and drove to my house when I bought it. Anyone have a firing order and distributor order diagram? Quote Selected
Engine Will Not Start Reply #7 – December 06, 2008, 09:21:34 PM Bump.I think i may have found the problem. On the injector harness which is connects to the main harness, the bottom of the white 10 pin connectors, is an orange wire. Its broken, but doesn't appear to tie into the mass of wires. It appears to be a ground for the injector harness. Is there a ground for the injector harness? This could explain why the car starts then dies. Can anyone confirm this is indeed a ground wire? Where is it normally grounded? I couldn't see the other part of it on the back of the block or firewall. In my manuals the ground in question is G602. There are two wires which connect here. One is the drivers side o2 sensor, can anyone tell me what the other ground here is?On my v6 engine, the one that came out of this car, I can see an orange wire which connects to the back of the motor. This is why I kinda assume its the same wire it just goes to a slightly different place. Any input? Quote Selected
Engine Will Not Start Reply #8 – December 06, 2008, 10:38:04 PM post some pics of said wires... they always help Quote Selected
Engine Will Not Start Reply #9 – December 06, 2008, 10:40:18 PM Aaaaaahhhhhhh, the old ten pin connector...... most likely not your problem man, that orange wire.... a lot of people had that same wire disconnected too i know i sure did. Here this should help Quote Selected
Engine Will Not Start Reply #10 – December 06, 2008, 10:46:15 PM also, when you say the car "starts", clarify that just a little...... does it actually run for a few seconds, or just start to fire while you're turning the key, but then when you let go of the key it dies..... that's the problem i had when i did the ho swap Quote Selected
Engine Will Not Start Reply #11 – December 06, 2008, 11:01:27 PM Quote from: mywifeskitty;246546also, when you say the car "starts", clarify that just a little...... does it actually run for a few seconds, or just start to fire while you're turning the key, but then when you let go of the key it dies..... that's the problem i had when i did the ho swapYes! Thats what it does when I let go of the key it stops. What was the problem in your case? Please tell me? :) Quote Selected
Engine Will Not Start Reply #12 – December 06, 2008, 11:27:12 PM hmmmmm the suspense :)i was afraid you might ask this :)anyway, i did a hack job on my wiring because i got the ho from a 91 t-bird and didn't have the funds for a full 87/88 harness, so i used the 91 wiring harness wasn't plug and play with the 83....... i don't know where the wire might be on your car, but i had to get a 4 pr0nged starter solenoid (2 big studs for the wires and 2 small ones)..... and add the blue wire that you see in the picture on the small solenoid pin next to the strut tower...... in your case, your solenoid may just be hooked up wrong....... anyway, i was told that the wire i had hooked up on the other side was losing voltage when let go of the key and was causing the engine to stall..... the blue wire i added is from a ignition switched source that allows the solenoid power not to be broken when switched back from start to runi hope that makes since, it's been a bit since i had to think about it :)i'd check your starter solenoid and how it's wired :)p.s. when you look at the pic, there is also a blue wire added to the battery post, that's for the hood light, the solenoid one is a different wire :) Quote Selected
Engine Will Not Start Reply #13 – December 06, 2008, 11:33:22 PM i just peeked again and it's hooked to a big yellow wire from the other fender wiring harness.... i'll try to track it down to tell you exactly what it is.... Quote Selected
Engine Will Not Start Reply #14 – December 06, 2008, 11:35:36 PM Thank you. I did take the starter seloniod off of the v8 car but maybe something is backwards. Thanks for the quick responce! Quote Selected
Topic: Engine Will Not Start (Read 2873 times)
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