Vanagoon

I have a little board that gives the proper voltages for the unused circuit so I don't get codes. I went to pnp and got another ecu to engine harnass and swapped it in. No more limp mode or p0328 cel! when I get a chance i'll be ripping the old harnass apart and see if I can spot something. thanks for the ideas and help

I'm going to have to check for voltage again, there is a bad connection or something in the harnass. The resistance is from the ecu to the ground on the engine. Its in the harnass some how. The engine harnass is unchanged and the ecu to engine connectors have had very few cuts. Its mostly removing the unused stuff and just hooking the power, ign, and those items back into it. I'll dig into it again tonight. and no the ecu case isnt grounded, but I did try using a jumper and grounding it once and it never made a difference. T

so almost no resistance on any of the ecu grounds to the engine, then I turn the ign on and I get close to 40ohm of resistance! then I turn off the ignition and the resistance stays at 40ohms for abit before dropping down again. bad connection thats getting warm and increasing resistance?

yup almost sure.... time to rip it apart...

well timing belt is definitely good, was almost hoping it was off. But that would of been to easy.... Fuel pressure looks good too, wasn't the best gauge but im sure its good... when ecuexplorer is talking to the ecu, I can see that the knock sensor isn't pulling timing. but the ecu must be in limp mode, because there is very little timing when under load. still have to check the harness connectors, ill do that tomorrow.

I have 3 knock sensors to choose from, all in spec and all the same issue. 100% sure its not the circuit or sensor. adjusted the valves and changed the valve cover gaskets/seals. Then changed the plugs, no oil to be found. The pump is the stock bosch vanagon pump, which worked flawless with the old engine. I'll be checking the timing belt and fuel pressure asap. Thanks for the ideas so far.

-5v off the ecu and 2.8v when its plugged in. -1999 models seem to have a hard time communicating with a lot of obd2 readers... found that out after I got this one as a donor. have to try my friends expensive scanner again -I got a second ecu from pnp and it does the same thing.... so either its a common issue with the ecus or I have a funky wiring issue i'm thinking. All the grounding looks good, every voltage I've checked looks good... -all the plugs looked abit lean too when I changed them. maybe I should check fuel pressure. its a new pump, but maybe the regulator is wonky.

Hey, so I have a 2.2L engine from a 1999 legacy L swapped into my 1984 vanagon. But from day one, I get a flashing CEL after about 5 secs after the engine starts. On ecuexplorer it show a P0328 code. So I checked out the knock sensor/wiring and its all good, 2.8V when running. Also tried another knock sensor that's in spec and another ecu with no success. Reset the ecu and within 5 secs the CEL is flashing and P0328 is back. My friends scanner also picked up a P0302 code, cylinder 2 misfire. So checked the leakdown on the engine and changed the plugs. wires are new.... Engine idles smooth, but on ecuexplorer I can see its pulling most of the timing out when accelerating. Which makes sense since it should be in limp mode. I changed the timing belt before putting the engine in the van, but I double checked and believe its good. Any Ideas what would make a Flashing CEL come in so fast?? and no matter what I do P0328 keeps coming in??? Thoughts? idea?