HELP! Socal for m60/m62 hybrid engine runs like ****

[Jonsku]

The dme seems to be getting really hot (I have two DMEs and both do the same thing). Im starting to lean towards something in the wiring but i dont know.

The DME's do get really hot (that's why there's the temp-sensor and fan in the original DME-casing), so it's adviseable to organize some kind of fan / air exchange for them.

I was under the impression that the nonvanos M62 intake manifold was the same as the M60, is that not true?

non-vanos M62 intake manifold is the same as M60B30 intake manifold (gaps between runners), whereas M60B40 has "the large intake manifold".

[325ix]

I was under the impression that the nonvanos M62 intake manifold was the same as the M60, is that not true? Also, what is the advantage of using the M60 dme vs. the M62?

[bemmerguy714]

Where did the motor come from? Do you know its history? Did you crack it open to see the condition of the cylinder bores?

Heard the engine running in original car. Started up no issues. Didnt open it so see cylinder bores. Only changed gaskets on the intake side and ones needed for the conversion.


On a side note:

The dme seems to be getting really hot (I have two DMEs and both do the same thing). Im starting to lean towards something in the wiring but i dont know.

[CoreyZ]

Where did the motor come from? Do you know its history? Did you crack it open to see the condition of the cylinder bores?

[CoreyZ]

A lot of those symptoms - the sputtering, long starts, ect - sound like bad compression... Have you done a compression test yet?

One other thing you can try is to create a small vac leak to simulate a lean condition - if it runs a little better, that's another vote in favor of low compression.

[Dozyproductions]

Check to see if the engine is properly grounded?

[bemmerguy714]

Its not getting that far to try that. But the VSS is plugged in.

Basically the car runs way better now that I retimed it. However, there is still a couple issues left (not sure if they are related at all).

1. Cranks over a while before starting (will start quicker if i push the gas).
2. Wont rev past 3k? That both in idle and underload. Just hits some sort of mechanical cut. Fuel pressure is ok during this time.
3. Sometimes idles weird, sometimes doesnt.

[Jonsku]

The ECU needs proper speed-signal, otherwise it'll mess the whole ignition up (but only on higher speeds of +100mph).

If you have connected "some speed signal" to ECU, try cutting that wire out and check if it would work better. It's not required on lower speeds..

[bemmerguy714]

your so close to me... i kinda want to check it out btw im doing the swap also

Def. Ill send you a PM.

[bemmerguy714]

check vaccum with a vac gauge.

Using port on back of intake? What am I looking for? (certain range or? )

[328ijunkie]

check vaccum with a vac gauge.

[robiniscool]

your so close to me... i kinda want to check it out btw im doing the swap also

[dirty30]

Thank you for all your help. I will replace fuel filter today and run the wire from one of the three ports in the back of the speedo. This is the correct place to take it from correct?

The green port on the back of the cluster, there are three outputs kinda stacked on one another. If you have cruise one may already be occupied.

[bemmerguy714]

You know I thought the same thing about the C101 pin 14 but ran the wire from the cluster output anyway. The speedometer will work with or without the dme vss input. Fuel filter would be a good/ cheap thing to check.

Thank you for all your help. I will replace fuel filter today and run the wire from one of the three ports in the back of the speedo. This is the correct place to take it from correct?

[dirty30]

I believe so. I have pin 14 from the c101 connected to pin 14 from the m60 harness. Wire is black and white for the vehicle speed sensor. My speedometer works. Is this what you mean? I have read others taking it from the cruise control but never understood the concept when it has pin 14 to do the same function. Or am i missing something?


Btw the fuel cut feeling in my opinion is too violent to be a fuel cut. But I will figure out a way to read the fuel underload. If this is all because a a dirty fuel filter I would be amazed!

You know I thought the same thing about the C101 pin 14 but ran the wire from the cluster output anyway. The speedometer will work with or without the dme vss input. Fuel filter would be a good/ cheap thing to check.