help FAST PLEASE
 

I took my car to the local garage to have a scanner put on it to see what codes would come up because the car is not running to well. They spent about 45min on it and then came in and told me that they could not get the computer to communicate with the scanner. but the still charged me for it. i think that is a bunch of shi* but any way my question is what would cause the comuter not to respond they tried two different scanners but nothing. any help would be greatly appreciated thanks
the car is an 88lx

on my car (also an 88) the little connector to plug into the scanner was all broken and rotted, check to see if yours is too, thats probably why they couldnt plug it in, i just did some "custom wiring" to get mine to work, good luck with it

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88 Notchback 5.0, 3.73's, Explorer intake, pulleys, Crane 1.7's, BBK headers, off-road H-pipe, flowmasters, subframe connectors, 65mm TB, shift kit, March ram air kit, motorsport wires, MSD coil, upper and lower control arms, 155lph fuel pump, cheap 2800 stall, Crane Adj.FPR, best time- 13.99@99.75, not yet tested times after rocker and intake install

where do i look for this wire. . I think they were able to get it to plug in but they could not get any readings.

thanks alot