Just installed a new ZZ4 Fast Burn in my 86. Also installed a 700r4 with internal lock-up. In short...am taking my car Off the computer control. I will leave the wiring for my AC idle-up solenoid. Isn't there a high acceleration shut-off circuit for my AC compressor that I should keep...does it go through the MAP sensor? Anything else you can think of that goes through the MAP. Will removal of the MAP impact my cruise control in any way. Anybody got a good diagram of inlets and outlets from the MAP?

welcome C
lets see if we can get the thread rolling,,,first im not the sharpest tack in the box on the mid 80s ecm...so
are we talking about a v6 tbi or v8 qj/ccc conversion???

I will leave the wiring for my AC idle-up solenoid.
part of the compressor clutch wireing ??? non ecm controlled ???


Isn't there a high acceleration shut-off circuit for my AC compressor that I should keep.
i wasnt aware of this untill mid 90s???

does it go through the MAP sensor?
i dont think any thing goes "thru" the map as far as wireing,,ecm uses map for vacuum referance...
it controls everything thru the ecm???

Will removal of the MAP impact my cruise control in any way
im not sure,,,dont think so??? im sure the way you decide to wire the tcc/brake switch will tho..

Anybody got a good diagram of inlets and outlets from the MAP?
map sensor 1"x3"x1/2" black?...3 wires +5v from ecm,,signal to ecm,,ground,,
and 1 vac hose from tb/manifold vac...

you might try a search in the efi forum...hope some of this helps :texas:

Thanks for the reply. The 86 was originally a 305 V8. Yes, if I could at least find a wiring diagram in and out of the MAP, I think it would be reasonably straight forward. the diagrams on this site don't show the MAP...at least not the ones I find.

Map sensor wiring, hope this helps http://www.alldatapro.com/images/smOnlineLogo.gif (http://www.alldatapro.com/alldata/PRO~V131440883~C8000~R0~OH~N/0)Home (http://www.alldatapro.com/alldata/PRO~V131440883~C8000~R0~OH~N/0) | Account (http://www.alldatapro.com/alldata/PRO~V131440883~C4432~R0~OF26~N/0/34870063/42417566/42417574/42417576/34853741/34857029/34857030/101367131/34857533/107044694) | Contact ALLDATA (http://www.alldatapro.com/alldata/PRO~V131440883~C4432~R0~OF17~N/0/34870063/42417566/42417574/42417576/34853741/34857029/34857030/101367131/34857533/107044694) | Log Out (http://www.alldatapro.com/alldata/PRO~V131440883~C4432~R0~OF25~N/0/34870063/42417566/42417574/42417576/34853741/34857029/34857030/101367131/34857533/107044694) | Help (javascript:helpWindow())SERCO MANAGEMENT SERVICES

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Wiring Diagram for Chart C-1D - MAP and BARO Checkhttp://www.alldatapro.com/alldata/PRO~V131440883~C4432~R0~OB0~P4R0H~N/0/34870063/42417566/42417574/42417576/34853741/34857029/34857030/101367131/34857533/107044694/41924943

CHART C-1D - MAP AND BARO CHECK


Test Description</B> :Step numbers refer to step numbers on diagnostic chart.
This checks the sensor voltage, which is highest when manifold pressure is highest. Output normally is in the middle range for specific altitudes. Low voltage increases spark advance. High voltage decreases spark advance. MAP and BARO sensors are essentially the same device. One measures pressure in the manifold and the other the pressure of the atmosphere.
This checks to see if the rate of change of the output vs. change in pressure is correct. Again, the normal change would be about the middle of the range listed. The voltage should change as soon as the vacuum is changed. If it doesn't, it could result in detonation or a sag on acceleration. Rapid voltage changes can only be measured with a DVM since a "Scan" tool has a time delay. Detonation or a sag could also be caused by fuel or a restriction in the hose to the sensor.





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http://www.montecarloss.com/community/ubbthreads.php?ubb=showflat&Number=189353#Post189353
Read this for cruise control with out the ECM.