|
|
Post by analogrocks on Aug 28, 2020 16:32:57 GMT -5
Hey Mac, how are you?! Long time no hear.
I just remembered you are THE man for diagrams. Would you happen to have a wiring diagram for ECM / engine bay.
2005 4.6 CVPI?
|
|
|
|
Post by mastertech on Aug 28, 2020 19:35:41 GMT -5
Hey Jeremy. Things are good. How have you been?
So lets see. When you say no communication with EMC do you mean you are trying to read codes with a reader and getting nothing out?
I have lots of hard manuals but not sure on this one. I will check later. I usually just look them up online anymore anyways. But finding a complete diagram is not so easy but probably one with powering circuits would do for now. I will see what I can find. Is this your car?
|
|
|
|
Post by analogrocks on Aug 30, 2020 21:02:01 GMT -5
HI Mac, yes it's my car. Things - business is running at 50% of what it was and no body cares. lol
I bought 2 OBD II scanners and they wouldn't communicate with the ECM after the first try. That is: I tested one of the two scanners the day I got it but it was 91 degrees on the parking lot so I decided to try later. It didn't work later. Also no check engine light on key on indicating - from what I read - that the ECM isn't communicating.
I tried unplugging the sensors one at a time. I mapped all the fuses, I did a continuity check from the fuse/relay box under the hood over to the ECM. There is power there. Also replaced the connector on the crank sensor. The road salt had degraded it and it disintegrated when I touched it.
The speedo reads 50km/h sitting still and the needle bounces up and down. I have a new VSS but I'm not convinced that's it so I haven't installed it. It feels like the ECM or bad wiring harness. But it's hard to know without a diagram.
The car was running, it shut off left me on the side of the road.
Immediately before that I replaced the Fuel Pump Driver Module and fuel cut of switch and connector. All were corroded. Then I replaced the fuel pressure sensor on the fuel rail. No difference. No start.
Thanks, Jeremy
|
|
|
|
Post by mastertech on Aug 31, 2020 22:26:42 GMT -5
This video has some good information. Give it a look and if still no go let me know.
|
|
|
|
Post by analogrocks on Sept 1, 2020 22:46:45 GMT -5
Hi, saw that one a few weeks ago. No missing fuse. I'm looking for another ECM and a wiring diagram.
|
|
|
|
Post by analogrocks on Sept 3, 2020 20:31:45 GMT -5
Hi Mac, it started and ran for 10 minutes today, shut it off and started it up a second time. I was on my way to work so I came back to it tonight.
I put the fuse box back together, put the cover on the wiring harness on the drivers side that goes through the firewall. NO START.
I also have "CHECK ENGINE" light again, so I'm not going to bother with the ECM.
Then it started to pour rain so I'll be at it again tomorrow. I could still use a wiring diagram.
|
|
|
|
Post by analogrocks on Sept 5, 2020 20:23:47 GMT -5
I spent 3 hours on it. All the positive feeds are there. I'm wondering about the negative ground feeds. The "Check Engine" light would come and go. The car would start, run for a bit then shut off by itself. No check engine light.
I'll be cleaning all the grounds tomorrow. I'm now looking for a diagram of the pin outs from the 3 connectors on the ECM. I want to check the grounds going into the computer with a light and a shake of the wiring harness.
|
|
|
|
Post by mastertech on Sept 7, 2020 12:15:03 GMT -5
I checked my books and I dont have anything on this and also not finding anything online either.
|
|
|
|
Post by analogrocks on Sept 9, 2020 1:54:39 GMT -5
Thanks for looking. I re-did all the ground points I could find under the hood. Found another green wire. Repaired it. Cleaned all the ground bolts and terminals in rust remover and then cleaned with IPA and lubed with silicone grease. Looks pretty. Still doesn't start.
|
|
