AgaricX

Myself and a group of local wrench heads are doing a 5 speed swap on my 98 GXE. We've got 85% of it done and we've run into a snag. Maybe HLH or someone who has done the swap can help?

The new tranny is completely in (flywheel, pressure plate, bearing etc...) and we wanted to start it up before we bolted on the halfshafts. It refuses to crank all the way up. We MAY get one pop that sounds like a backfire, but other than that it sounds like it's attempting to crank but no spark. We can smell unignited fuel after attempting to start her up.

I pulled the ECU codes and this is what I get:

1 - Overrun clutch solenoid valve (Automatic Transmission)
2 - Torque Converter clutch solenoid valve (Automatic Transmission)
3 - Line Pressure Solenoid Valve (Automatic Transmission)

Obviously, I know I'm going to get a CEL before I swap in a manual ECU. Question is: will these codes prevent the car from starting?

How many people are running 5 speeds on an AT ECU?

A few things that may be important:

Tranny is from a 97. I have an Exedy Stage 1 clutch kit and Fidanza Flywheel. The clutch pedal is in and fully depressed, though the clutch lines aren't in yet. One of us depressed the clutch switch on the MT itself when we start.

HELP????!!???

AgaricX

Anyone? I'd like to get the car dropped and on the street tonight or tomorrow.

araffio

iTrader: (9)

I can't tell you what your problem is exactly, but I do know that auto ECU's work just fine with manual trannies. CEL is only thing you'll get...

-Tony

Stephen Max

iTrader: (59)

I ran with an AT ecu for half a year after doing the swap with no problems.

What about your crankshaft position sensor? Did you put that back in place?

AgaricX

Yes, it's in.

Jeff92se

iTrader: (82)

Timing ring on the flywheel is on?

BKLYNHEDZ

The exact same thing happened to me when I did my conversion, had me stumped for days, it turned out somehow I blew a main fuse plus my crank position sensor was bad(apparantly they are very ***ile I guess) canged those and started right back up. Hope that helps.

Stephen Max

iTrader: (59)

Heh heh. I guessed you dropped the "r" in "fragile".

I agree. Try swapping a crankshaft PS with a friend's good one and see if that helps.

AgaricX

I'll try! You guys kick A$$.

Maxima97'SE

I had to bypass the neutral saftey switch on my 240sx to get it to start when doing the auto to manual swap. I also used the auto tranny ecu with no tranny wiring harness just the speed sensor hooked up. Nick

Dreizehn

iTrader: (4)

Since the hydraulic lines aren't installed, is the clutch engaged when you are trying to start it?

Just trying to understand what you're saying...

AgaricX

We've already bypassed the neutral switch. Yes, the clutch is engaged. One of us pressed the clutch switch on the tranny when we start.

skeelo34

iTrader: (4)

I say its the crankshaft position sensor as well. I messed around with it this weekend when i was testing it. When i Had it unplugged, the car just cranked and cranked and wouldnt start. Never thought that a stupid little magnetic sensor would do that. Also auto ecu will work fine, just give you cel and a higher idle.

AgaricX

Ok, I couldnt get it to work so i took it to the dealership... they say the Fidanze flywheel I bought from cattman is the wrong one. It's the only one they sell!! They say that the teeth can't be read by the CPS.

Jeff - you asked "Timing ring on the flywheel is on?" I put all the parts that came with the flywheel on the car. Was I supposed to reuse the timing ring from the AT?? I was under the impresstion it was riveted to the flywheel. They mentioned that they didnt think it had a timing ring. They said that they can see the ring that engages the starter, but not the one on the backside.

*sigh* This is a pain.

AgaricX

Update:

Well, apparently the Fidanza flywheel didn't come with a 'timing ring'. I called the local dealership... and being that they are idiots, they have no idea what I'm talking about.

I know on the Auto, the timing ring is riveted to the flywheel. That isn't true with the manual?

Does anyone have a part number??? ARGH! I miss driving my baby!

araffio

iTrader: (9)

When I dropped my car off at the shop for my conversion I only left the Fidanza in the car. I ended up having to bring the stock flywheel to the shop so he could get the ring off it. I had no idea the Fidanza was missing parts that are needed, but I am glad I saved the flywheel.

Try and find a used flywheel so you can get this part..


-Tony

Dreizehn

iTrader: (4)

It's bolted to the flywheel.

AgaricX

Bolted or riveted???

araffio

iTrader: (9)

It is bolted

Ramius83

Contact a local junkyard, or go on to www.car-part.com and check there. You will probably have to buy the whole flywheel, but it comes with that timing ring that you need. This is crucial for the car to even start or run. It is a ring similar to the auto one that is bolted to the back of the flywheel with I think 6-8 bolts.