PLEASE HELP!!!!No acceleration on 92 q45

[MrMoody]

My fuel pump went out, so I replaced the pump and control unit. Now the car starts and idles great while in park, but as soon as I put it in drive and try to take off nothings happens. I can coast fine, but am not able to accelerate at all. Car starts to seize a bit. If I barely put my foot on the gas eventually the car starts to accelerate, but takes a long time to get up to speed. What could it be and what should I do?

[Q451990]

to NICO!

Did you use a new OEM fuel pump? Is the FPCU confirmed working?

If not, what did you use?

Heath

[qship96]

possible middle speed range control of fpcu is bad. Try temporarily Grounding the fpcu connector to bypass it and see if problem disappears

[MrMoody]

Heath,

yes I did. First I changed the fuel pump, that is when the problem started. So then I changed FPCU and still same problem. Over the weekend I changed the MAF sensor and still the same issue. So now what do you think it could be or may I have installed something wrong.
Thanks,
Jeff