I replaced my engine with a Ford factory built crate motor. I checked and repaired engine harness, new distributor which was working on old engine, new TPS, new ignition wires and yes checked routing about a 100 x's from experience, I know what happens when you get a cross fire.
Long story, short. I was under the gun to finish install due to pending major back surgery. Finished night before surgery. Tried to start engine and here's what happening. Starts, barely runs low rough idle and zero acceleration or throttle response.
I just can't do what I was doing before my surgery, but I have no choice. I've doubled ck distributor placement by verifying TDC and ck rotor alignment. Ck TPS at connector w/ VOM getting correct voltage readings. I've tried pulling codes, but get only all ok 111 KOEO. Can't run diagnostics w KOER. I ck wiring harness at C101 back to TPS, distributor, coil,
Pulled computer and opened it, looks brand new, absolutely clean. Ck'd 60 pin connector back to TPS, distributor, PCM, Ign coil, MAF & O2 sensor. All ok. Ck grounds, ck with battery disconnected wiring to fuse box.
I put it all back together and same problem. I really don't think a Ford dealership can do any better.
I even bought a PCM tester and it tests ok, if I'm reading the instructions correctly, ( which is why the tester is no longer made, most oddly worded instructions).
I've ordered a new MAF sensor. But doubt that's the problem. If it fixes it, great, if not here are my ideas and I'm open to any advise, thoughts, tea leaf readings, etc....
My final thoughts are it can only be the following.
1. Distributor (which is new and was working perfectly in old engine)
2. TPS even though I'm getting correct voltages and it's new from Motorcraft
3. PCM can't verify 100% tester I'm using gave me correct results
4. Engine computer is bad
5. Wiring bad.
I'm burnt out, but this is my only means of transportation, I'm afraid if I have it towed to Ford, they'll pull some stunt or say something stupid and I'll go postal.
My last push would to be replace the PCM, than???
I'll take any advice, ideas, guess's, anything, I just really don't want to take it to a dealer or mechanic who thinks they can fix it and only waste my time, money and what's left of my nerves.
Thanks in advance!!!
Edited by TeE, 19 May 2013 - 08:30 PM.