- Joined
- Jul 1, 2022
- Messages
- 45
- Reaction score
- 13
- Location
- Wilkes-Barre, PA, USA
- VCDS Serial number
- C?ID=523035
1992 Passat, 2 liter 16 valve.
With the engine running, sitting in place and revving it, it dumps a lot of smoke and runs very rich. Idles OK and it's driveable. When you're driving and you go from off/light throttle to "some" throttle it starts jerking. When you get past about 1/4 throttle it smooths out. I have no evidence to suspect it, but someone on a different site told me the differential fuel pressure regulator. It's the plastic block looking device with an electrical connection that attaches to the side of the fuel distributor. Yesterday I removed this regulator, blew carb cleaner and Marvel oil, compressed air and I was smacking it with a plastic screwdriver handle thinking maybe it was locked at a full pressure position. I tested it for resistance per the Bentley and it comes to 19 ohms so that's at least in spec. I was thinking to give it straight 12V and look/listen if anything moves inside it but I don't know if that would smoke it so I didn't do that. I was thinking to unplug it and see if the vehicle still runs the same way and that might be an indication that it's messed up. I don't know how else to test this thing. I thought about adapting an older CIS from a Rabbit/MK1 Golf. I'm really thinking about that Boggs Brothers manifold and carb setup but four carbs... I don't like four carbs. Also it's $1200. I wouldn't mind bolting another DFPR to it to see if it does something different but I can't find one for less than $200 and I don't know if that will do any good for me. A few months back I had it hooked up and it gave me this code. I was thinking to remove my ECU and take it to my Friend who is really good with electronics and have him go over it for leaking caps or blown resistors or any kind of trauma. I don't know where it is and if it's filled with epoxy as some manufacturers like to do.
I've replaced the injectors, the cold start is giving three nice puffs and then stops, no dribbling. The idle speed is at least very close if not dead nuts. I didn't have the metric feeler gauges so I had to come as close as I could with SAE feelers. I made the test/patch harness (VW 1315A/1) to dial in that 3mm Allen screw in the air flow sensor assembly and had it bouncing from damn near zero to about 4.5ma. I did the fuel delivery and volume test where you remove the fuel pump relay and jumper it out to keep the fuel pump running.
Anyone have any thoughts on any of this mess? Have you done the Boggs carb swap? Do you have a DFPR that you won't miss? Are you perhaps in northeast PA and happen to have the Holy Apparatus to really go over this thing? I need to have this thing back somehow. Right now I'm fueling an 87 Bronco with the 5 liter engine and it's killing me... My next fallback is a 71 Chevy C-20 and that gets about 8MPG on a good day...
Serenity now... Serenity now... Serenity now...
With the engine running, sitting in place and revving it, it dumps a lot of smoke and runs very rich. Idles OK and it's driveable. When you're driving and you go from off/light throttle to "some" throttle it starts jerking. When you get past about 1/4 throttle it smooths out. I have no evidence to suspect it, but someone on a different site told me the differential fuel pressure regulator. It's the plastic block looking device with an electrical connection that attaches to the side of the fuel distributor. Yesterday I removed this regulator, blew carb cleaner and Marvel oil, compressed air and I was smacking it with a plastic screwdriver handle thinking maybe it was locked at a full pressure position. I tested it for resistance per the Bentley and it comes to 19 ohms so that's at least in spec. I was thinking to give it straight 12V and look/listen if anything moves inside it but I don't know if that would smoke it so I didn't do that. I was thinking to unplug it and see if the vehicle still runs the same way and that might be an indication that it's messed up. I don't know how else to test this thing. I thought about adapting an older CIS from a Rabbit/MK1 Golf. I'm really thinking about that Boggs Brothers manifold and carb setup but four carbs... I don't like four carbs. Also it's $1200. I wouldn't mind bolting another DFPR to it to see if it does something different but I can't find one for less than $200 and I don't know if that will do any good for me. A few months back I had it hooked up and it gave me this code. I was thinking to remove my ECU and take it to my Friend who is really good with electronics and have him go over it for leaking caps or blown resistors or any kind of trauma. I don't know where it is and if it's filled with epoxy as some manufacturers like to do.
00587 - Ross-Tech Wiki
wiki.ross-tech.com
Anyone have any thoughts on any of this mess? Have you done the Boggs carb swap? Do you have a DFPR that you won't miss? Are you perhaps in northeast PA and happen to have the Holy Apparatus to really go over this thing? I need to have this thing back somehow. Right now I'm fueling an 87 Bronco with the 5 liter engine and it's killing me... My next fallback is a 71 Chevy C-20 and that gets about 8MPG on a good day...
Serenity now... Serenity now... Serenity now...