91 T2 Rescue

WE3RX7 · 10-25-2008, 07:51 PM

BigPimp'n acquired a gorgeous mint '91 T2 recently. The previous owner told him it would just cut off when driving after a few minutes. When BP drove it, he quickly learned it was going into LIMP mode. After taking it to a shop in NJ who couldn't repair it/figure out the problem, another friend w/ another T2 came by to swap misc parts trying to figure out which device was causing the issue.

When I learned of the issue, it was suggested that it was the MOP as is common on S5 cars. He brought the car to me and I was able to get a good MOP from one320fc and swapped it on. During the swap, I discovered that a rodent had made a rather LARGE home in the front of the car (during the time it has been sitting) so I removed the 10lbs of leave/twigs/berries to improve the cooling

After the MOP swap, it still had the LIMP mode. Checked the ECU and a conclusion was made that the MOP driver in the ECU had also failed. After researching options, it was decided to go ahead and upgrade the ECU with MOP delete and run premix from now on. Premix IMHO is safer anyway and the RTek has lots to offer.

The guys at RTek were quick and within a week they had the ECU fixed and returned for install.

I installed the new ECU - fired the car up and it's all better

Currently running a 100:1 ratio for gas, and although it was raining during the drive, its easy to say the car is MUCH more responsive and no more LIMP mode

.. not to mention, no more FCD needed....

With the cost of stock ECUs and MOPs ever increasing, I really feel that the RTek is a great alternative. Its inexpensive and if you dont like premixing, you can get the earlier S4 mechanical MOP systems and swap them on (with the TP, etc)...

The final touch was a combination of clay bar, some rare german polish and a secret sauce I've had for years for waxing and the car's paint came around. It's not perfect, but looks good for a 15+ year old car.

The stats on this car is now:
1991 T2 all factory options (even has the lip, which isn't in these photos).
79K original miles, 3" exhaust and RTek 1.5. For a daily driver and all around fun car - it doesn't get much better! Not to mention, all the time and work takes another FC from the yard to the road. With '91s getting more rare by the year, I'm glad BP will have this one for years to come...

WE3RX7 · 10-25-2008, 07:53 PM

These are some of the other pics during the work.

The new ECU:

After all the exterior detailing... anybody coming to the show this Thursday in VA can see the car

The whole series of pics are now up in an album in my CP:
[http://www.rotarycarclub.com/rotary_...php?albumid=18

Enjoy!

vex · 10-25-2008, 08:51 PM

good deal bro. Glad it worked out for you. 1.7 ya?

BigPimpin' · 10-25-2008, 09:40 PM

Bill is da man!

Big props go out to him!

WE3RX7 · 10-25-2008, 09:42 PM

The 1.7 required larger injectors - this one is all stock fuel (minus the adjustments now made w/ the 1.5)

firzen · 10-25-2008, 09:45 PM

Good stuff- now keep that thing clean and don't let it get messed up in the winter.

WE3RX7 · 10-25-2008, 09:46 PM

^ Lol - tell that to the lucky owner BigPimpin'

I warned him all that FC furry is going to be a handfull, the RTek really made the turbo come alive and the car is much more responsive...

firzen · 10-26-2008, 10:24 PM

The RTek is really a big improvement- makes you wish they came stock...

10-25-2008, 07:51 PM	#1
WE3RX7 RCC Addict Join Date: Feb 2008 Location: VA iTrader: (1) Posts: 1,812 Rep Power: 18	91 T2 Rescue - the story... BigPimp'n acquired a gorgeous mint '91 T2 recently. The previous owner told him it would just cut off when driving after a few minutes. When BP drove it, he quickly learned it was going into LIMP mode. After taking it to a shop in NJ who couldn't repair it/figure out the problem, another friend w/ another T2 came by to swap misc parts trying to figure out which device was causing the issue. When I learned of the issue, it was suggested that it was the MOP as is common on S5 cars. He brought the car to me and I was able to get a good MOP from one320fc and swapped it on. During the swap, I discovered that a rodent had made a rather LARGE home in the front of the car (during the time it has been sitting) so I removed the 10lbs of leave/twigs/berries to improve the cooling After the MOP swap, it still had the LIMP mode. Checked the ECU and a conclusion was made that the MOP driver in the ECU had also failed. After researching options, it was decided to go ahead and upgrade the ECU with MOP delete and run premix from now on. Premix IMHO is safer anyway and the RTek has lots to offer. The guys at RTek were quick and within a week they had the ECU fixed and returned for install. I installed the new ECU - fired the car up and it's all better Currently running a 100:1 ratio for gas, and although it was raining during the drive, its easy to say the car is MUCH more responsive and no more LIMP mode .. not to mention, no more FCD needed.... With the cost of stock ECUs and MOPs ever increasing, I really feel that the RTek is a great alternative. Its inexpensive and if you dont like premixing, you can get the earlier S4 mechanical MOP systems and swap them on (with the TP, etc)... The final touch was a combination of clay bar, some rare german polish and a secret sauce I've had for years for waxing and the car's paint came around. It's not perfect, but looks good for a 15+ year old car. The stats on this car is now: 1991 T2 all factory options (even has the lip, which isn't in these photos). 79K original miles, 3" exhaust and RTek 1.5. For a daily driver and all around fun car - it doesn't get much better! Not to mention, all the time and work takes another FC from the yard to the road. With '91s getting more rare by the year, I'm glad BP will have this one for years to come...

10-25-2008, 07:53 PM	#2
WE3RX7 RCC Addict Join Date: Feb 2008 Location: VA iTrader: (1) Posts: 1,812 Rep Power: 18	These are some of the other pics during the work. The new ECU: After all the exterior detailing... anybody coming to the show this Thursday in VA can see the car The whole series of pics are now up in an album in my CP: [http://www.rotarycarclub.com/rotary_...php?albumid=18 Enjoy! Last edited by ZGN; 12-22-2009 at 01:34 PM..

10-25-2008, 08:51 PM	#3
vex RCC Loves Me Not You Join Date: Jul 2008 Location: Influx. iTrader: (6) Posts: 2,113 Rep Power: 19	good deal bro. Glad it worked out for you. 1.7 ya? __________________ The Official FC Radiator Thread My Project Thread: Cerberus CCVT Virginia Rotary Group

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10-25-2008, 09:40 PM	#4
BigPimpin' "Old Guy in da house" Join Date: Mar 2008 Location: Washington, DC iTrader: (1) Posts: 77 Rep Power: 17	Bill is da man! Big props go out to him!

10-25-2008, 09:42 PM	#5
WE3RX7 RCC Addict Join Date: Feb 2008 Location: VA iTrader: (1) Posts: 1,812 Rep Power: 18	The 1.7 required larger injectors - this one is all stock fuel (minus the adjustments now made w/ the 1.5)

10-25-2008, 09:45 PM	#6
firzen Rotary Fanatic Join Date: Mar 2008 iTrader: (2) Posts: 231 Rep Power: 17	Good stuff- now keep that thing clean and don't let it get messed up in the winter.

10-25-2008, 09:46 PM	#7
WE3RX7 RCC Addict Join Date: Feb 2008 Location: VA iTrader: (1) Posts: 1,812 Rep Power: 18	^ Lol - tell that to the lucky owner BigPimpin' I warned him all that FC furry is going to be a handfull, the RTek really made the turbo come alive and the car is much more responsive...

10-26-2008, 10:24 PM	#8
firzen Rotary Fanatic Join Date: Mar 2008 iTrader: (2) Posts: 231 Rep Power: 17	The RTek is really a big improvement- makes you wish they came stock...