88 Coupe 4.9 Swap Thread (Page 63/69)
josef644 DEC 16, 08:47 PM
I have switched the pin into the new socket 'E2'. I will finish with the C500 connectors tomorrow morning.

I found a good write up on removing the pins from the C500. Bloozberry's post in this thread. There is a white plastic "terminal position assurance" (TPA) piece that needs to be removed before it will come out. Took me about 5 minuets to do the socket switch out.
http://www.fiero.nl/forum/Forum2/HTML/099987.html

[This message has been edited by josef644 (edited 12-16-2010).]

josef644 DEC 17, 07:54 PM
Well the old Fiero Two Step today. One step forward, two backwards.

Re connected everything, and would not start up. Re connected the VATS bypass and got it going again. My AutoXray 5000 will not read the ECM. Worked fine before. I drove the car today about 3-4 miles. It is starting off in second gear, I am thinking it is in the 'Limp Home' mode. I will have to check grounds tomorrow, and the sockets in connector 'A' for the proper wiring for the ALDL.

Engine is idling around 1800 RPM Idled fine before this harness change.

ALDL deceased

Running in 'Limp Home' mode.

Pulled the three ECM harnesses and verified the 4 ECM grounds, and the feed for the ALDL socket M, ground connection for socket A and the timing disable in socket B

Pulled and re seated the ECM Prom with no luck on a scan

[This message has been edited by josef644 (edited 12-17-2010).]

josef644 DEC 19, 02:34 PM
This morning I removed the ECM harness from the car and verified all wiring with my ohm meter. I found one metal pin left unseated. It went 'click' when I pushed it all the way in to the socket. Everything else was golden.

I am starting to think that my ECM has gone south.
josef644 DEC 20, 06:46 PM
I went and got two ECM's fro 91 Deville's today. I will get one in the car and get it connected up tomorrorw and see what gives.

-Joe
josef644 DEC 21, 07:16 PM
Took a day off and helped a needy family today. Back tomorrorw.

Put the harness back on the engine, and installed one of the ECM's I got two dayas ago. ECM scans, and runs the car. Seems like It is still missing the brute force that was there before the harness switch out.

I am threw with this project untill after the Holidays are over.


Merry Christmas to all of you good folks here at PFF
-Joe

[This message has been edited by josef644 (edited 12-22-2010).]

josef644 DEC 31, 02:59 PM
Grand children are all back home with their parents. Quite at last.

I replaced the key lock on my deck lid with the one that matches my doors. Installed a deck lid back on the car. Hasn't been one there since August 2009. Looks sorta neat.


Stickpony is making me a chip for my ECM

[This message has been edited by josef644 (edited 12-31-2010).]

josef644 JAN 06, 10:16 AM
Talked to Stickpony last night. The chip is on the way, so maybe Satuerday I will be able to take a ride to see if all is well in 'Fiero Land' again.

[This message has been edited by josef644 (edited 01-07-2011).]

katatak JAN 08, 10:04 PM
Ok Joe, It's Saturday night - need an update. Really curious how the Chip is going to work! Thinking I might do the same.

Pat
josef644 JAN 08, 10:16 PM
Pat I was hoping that it would be here today, but not to be. I am sure it will be here Monday as it left Ft Lauderdale, Fl on 01-06-11 at 7:00pm. Looking forward to a nice ride around town. I am thinking positive here.

We had a beautiful sunset yesterday, like the one, one of you guys posted a while back. I didn't have a camera with me.

Gonna be COLD here the next few days. Down to around 25 at night for the next three nights.
-Joe

[This message has been edited by josef644 (edited 01-09-2011).]

josef644 JAN 11, 02:37 PM
This is a re post of my ride today as posted in my 4.9 Limp Mode thread in Tech today:

Well Good News at last. Limp Mode is gone. Stickpony's chip cured all the ill's. I have the famous 4.9 monster launch from stop again,. All four gears are engaging, as well as the TCC is locking up. Talk about TORQUE!!!!!!!

I did run into a bit of a snag, but I do not think Sticpony's chip has anything to do with it. I have installed a second EPROM I got in the mail yesterday, and the 'hitch' is still there.

"HITCH" After doing the idle learn procedure I went for a drive. Drove to get fuel first. About 3 miles or so away I could feel a surge coming and going with the engine. I noticed that the scanner was showing -34.6*F. The normal temperature would come back, and the surge would disappear. After adding 4 gallons to the tank, I pulled the coolant sensor connector and added it back to the sensor. I then drove around 10 miles or so and all was fine again. Until it started the -34.6*f reading again.

Back home I started wiggling the wires attempting to find a place that would duplicate the problem. I couldn't make it happen. I am planning on ordering a new AC Delco coolant sensor and AC Delco TPS connector. If I have to I will add new wire all the way from the ECM plugs to the sensor.

I am just a few inches short of calling this swap finished.

Had a real nice ride today in the car otherwise. Maybe 20 miles or so.

Stickpony's chip solved most of my problems. No way his chip is involved in this last hurdle to clear.

-Joe

4:25pm:

quote
Originally posted by josef644:

Well it got up to 42*F outside a while ago so I went back out to the garage. I am thinking I have located and fixed the break in the circuit. I had added a new connector to the harness for the coolant sensor. Injection Technology had used a connector for the Cadillac,(no gauge), so I added the one for my engine and the gauge as Mickey_Moose posted. One of the solder joints I had made was bad. I put new solder joints and heat shrink on all three wires. I can't get the -34.6*F to come back again.

Went for a nice 30 mile trip. Smooth as glass. Got into closed loop mode. 1800 RPM is 70 MPH. I am gonna calibrate the TPS and re do the idle learn tomorrow. All systems are GO right now.


YE HAW!!!!!!!


[This message has been edited by josef644 (edited 01-11-2011).]