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Old 02-01-2003, 22:00   #1 (permalink)
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EA falcon conversion

Problem with conversion from CPI to MPI
*No kick down
*Harsh changing
*Clunking on down change 2nd gear

If u have any info that could help me please email me asap
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Old 02-01-2003, 22:12   #2 (permalink)
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3 or 4 speed auto? 3 or 4 speed ECU?

A little more info and a few guys on here should be able to help
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Old 02-01-2003, 22:21   #3 (permalink)
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Steve_58, Dude you dont have your throttle position sensor for your transmission connected.. The box has no idea how much throttle your applying. You need to cut and extend the 3 pin plug from the old TBI to the throttlebody on your new MPI... This is of course u have a 4spd auto.

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Old 02-01-2003, 23:42   #4 (permalink)
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yes i have a 4speed auto can u send me a diagram or let me know what wires a what if u dont mind
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Old 02-02-2003, 00:44   #5 (permalink)
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Have a look in yer engine bay, there should be a 3 pin connector just hanging there hear the oil dipstick. It is roundish and has blue/grey, blue/red and blue/white wires coming from it. You need to cut and extend these 3 wires about 30cm so it reaches the TPS on your throttlebody. You need to make sure the throttle body on the MPI has the dual TPS (ie, 2 of them) if not then ure in a bit of trouble and will need to get a later model throttle body from a 4spd EA or EB. The EA, EB MPI models with a 4spd auto have 2 TPS piggybacked on the throttle shaft. If you DO have the 2 TPS then its a simple job of connecting the extended connector to the TSP connector...

Brent
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89 EA1 3.9L TBI Falcon Sedan with 3 speed auto / currently being upgraded...
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Old 02-02-2003, 05:54   #6 (permalink)
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Thanks i will try it and c what happens i will get back to u and let u know thanks again
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Old 02-02-2003, 18:02   #7 (permalink)
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Brent, on another note, if Im converting to MPFI with a 3 speed box, will it matter whether i have the dual tps or not?
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Old 02-02-2003, 19:05   #8 (permalink)
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The 3 speed box is a mecanical auto, where the 4 speed auto is an electronic auto. the TPS is only needed for the ecu on a 3 speed.
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Old 02-15-2003, 23:27   #9 (permalink)
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brent,79 still having trouble with idle some times good some times idles rough. It is hard to start at times when cold ok when warm,only have 1 plug on the TPS on the throttle body the wires are orange,green,black
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Old 02-16-2003, 02:12   #10 (permalink)
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On the MPFI manifold there is a round plug with green orange and black coming from the TPS ( on throttlebody ), if I am using a 3 speed auto can I just leave that hanging?
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