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Post by chrissanders on Mar 1, 2024 19:29:46 GMT -5
Purchased an 84 SVO off of a guy that was trying to restore/get it running. Guy put a lot of new parts on the car and I have replaced a few things myself but still no luck getting it running. Car has a new VAM,O2 sensor, distributor, button, cap, wires and plugs. All replaced with motorcraft parts. Ron Francis wiring harness has also been installed. When I first got the car the owner told me it would not rev past 3000rpm, it was sick to say the least. Thought maybe it was a fuel pump issue but the previous owner had already replaced the pump with single in tank conversion. Checking timing and it was at 3*, set timing at 10* which improved it dramatically but when I put the spout connector back in the timing does not advance. I have tried a different Computer and it is stil the same. I have checked the wire back to the computer and it ohms out good. Cannot figure the spout thing out, any suggestions?
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Post by chrissanders on Mar 1, 2024 19:31:19 GMT -5
Also the thing is running extremely rich, black smoking out exhaust big time
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Post by Stinger on Mar 2, 2024 2:41:23 GMT -5
What codes does it output?
What's the fuel pressure key on/engine off?
What ECU code, injector color (brown or blue/green), and VAM size (under 3" or over 3" OD)?
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Post by chrissanders on Mar 2, 2024 11:14:11 GMT -5
What codes does it output? What's the fuel pressure key on/engine off? What ECU code, injector color (brown or blue/green), and VAM size (under 3" or over 3" OD)? I have a 21, 54, 66 and 67. Fuel pressure key on engine off goes to 20 then back to 0. Can’t tell what injectors are in the car, all I can see on them is a 20 and they look solid black |
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Post by chrissanders on Mar 2, 2024 11:22:47 GMT -5
What codes does it output? What's the fuel pressure key on/engine off? What ECU code, injector color (brown or blue/green), and VAM size (under 3" or over 3" OD)? Sorry forgot to mention it is the big VAM. Found the ECT sensor wasn’t plugged All the way in. Still have 54,66 and 67 |
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Post by chrissanders on Mar 2, 2024 11:32:06 GMT -5
What codes does it output? What's the fuel pressure key on/engine off? What ECU code, injector color (brown or blue/green), and VAM size (under 3" or over 3" OD)? ECU is a TE |
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Post by chrissanders on Mar 2, 2024 19:29:05 GMT -5
What codes does it output? What's the fuel pressure key on/engine off? What ECU code, injector color (brown or blue/green), and VAM size (under 3" or over 3" OD)? Pretty sure it has the wrong injectors. Number on injector is D1680BA |
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Post by Stinger on Mar 3, 2024 0:51:34 GMT -5
The TE uses 30 lb/hr injectors and the big VAM. Those injectors appear to be 36 lb/hr.
Stock fuel pressure is 39 psi at key on/engine off. To make those 36 lb/hr injectors flow 30 lb/hr, your fuel pressure needs to be about 30 psi. Do you have an adjustable fuel pressure regulator?
Code 66 indicates a VAM issue (voltage too low).
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Post by chrissanders on Mar 3, 2024 7:30:17 GMT -5
The TE uses 30 lb/hr injectors and the big VAM. Those injectors appear to be 36 lb/hr. Stock fuel pressure is 39 psi at key on/engine off. To make those 36 lb/hr injectors flow 30 lb/hr, your fuel pressure needs to be about 30 psi. Do you have an adjustable fuel pressure regulator? Code 66 indicates a VAM issue (voltage too low). I just bought an adjustable FPR not installed yet. I purchased a set of green top injectors last night just to be on the safe side, not sure how long those injectors have been in there or if they are any good or not. They all click when voltage is applied but that’s about all I know. The guy I bought the car from jacked up the new Ron Francis wiring harness that he put in the car. I started going through it yesterday. So far I found the blue wire labeled Tach just twisted together and taped over, come apart when I touched it. Hoping this may be the reason my timing and everything else is acting weird. That is if that was the tach signal for the computer. The Vam harness has been cut and butt spliced too. I have to dig into it to see if it is wired correctly. I don’t understand why the guy cut a brand new harness up. |
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Post by chrissanders on Mar 3, 2024 16:09:21 GMT -5
The TE uses 30 lb/hr injectors and the big VAM. Those injectors appear to be 36 lb/hr. Stock fuel pressure is 39 psi at key on/engine off. To make those 36 lb/hr injectors flow 30 lb/hr, your fuel pressure needs to be about 30 psi. Do you have an adjustable fuel pressure regulator? Code 66 indicates a VAM issue (voltage too low). Think I just found the issue with the VAM. According to the pinout of the ECM from the VAM the Harness is wrong. Looking at the harness from left to right the first pin is the VAT pin 25, 2nd is VAF pin 43, 3rd is VREF pin 26 and 4th is 46 SIG RET 5th position is blank. My harness has the 1st pin to 43, 2nd to 27, the other 3 are right. |
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Post by Stinger on Mar 3, 2024 18:44:37 GMT -5
I don't have a way to verify your info at the moment but if that pin info is correct then that's certainly an issue that needs corrected.
If fuel pressure is 20psi and you don't have an adjustable regulator installed then you likely have a fuel pump issue, or clogged fuel filter.
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Post by chrissanders on Mar 3, 2024 19:44:09 GMT -5
I don't have a way to verify your info at the moment but if that pin info is correct then that's certainly an issue that needs corrected. If fuel pressure is 20psi and you don't have an adjustable regulator installed then you likely have a fuel pump issue, or clogged fuel filter. Supposedly it is a new fuel pump. Weird thing is once I started the car it would go to 30 psi every time. |
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Post by chrissanders on Mar 3, 2024 19:45:13 GMT -5
I don't have a way to verify your info at the moment but if that pin info is correct then that's certainly an issue that needs corrected. If fuel pressure is 20psi and you don't have an adjustable regulator installed then you likely have a fuel pump issue, or clogged fuel filter. If I knew how to post a picture on here, I would show you |
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Post by Stinger on Mar 3, 2024 20:28:00 GMT -5
The other way to check base fuel pressure is to have it running and then pull the vac hose from the regulator (but plug the hose so it's not a big vacuum leak) and then see what the pressure is. It should be 38-39psi.
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Post by chrissanders on Mar 3, 2024 20:48:40 GMT -5
The other way to check base fuel pressure is to have it running and then pull the vac hose from the regulator (but plug the hose so it's not a big vacuum leak) and then see what the pressure is. It should be 38-39psi. I have verified that to be correct. I |
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