1G 90 dsm ips and idle problem

[1990dsmkid]

Alright I just replaced my throttle body shaft seals and reinstalled e erything. I did blt and found 2 small leaks and fixed them. I did set my tps volts to .48-.52 according to fsm. The isc coils all read 29.7 ohms and I did remove it and had someone turn key to on position. It spun and moved so Im pretty sure its good. I then went ahead and started the car and let it run to get to operating temp so I could adjust biss if need be. Well once it started getting close to operating temp it started to surge ever so slightly and would get a little rough sounding then it shut off. I figured I would go ahead and try adjusting my ips. Well Im following the fsm and I cant get the resistance to read without jumping around so I added a ground wire along with grounding strap. Still had same problem so I grabbed a test light and clamped it on the ips and held prone on postive terminal. I spun the isp until the light came on then turned it another 15/16 of a turn. Will this work correctly in setting the ips? Tomorrow im going to try another blt and letting the car idle to temp. I just went this thing to idle correctly

 

[2gmitsueclipse]

Some recent updates.

Power train is out. I was able to get the car to run, but poorly. Here is what I found to likely be the issue:

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You can do a visual inspection of the ecu to spot issues as well. I found this problem with my 90 ecu. I am not and ecu expert, but can assume that what I found was my issue. This would be a leaking cap.

 

[1990dsmkid]

Ive looked at it. The isc drivers look fine but the board does look a little dirty around the caps. Im getting a stock eprom chip tomorrow so I will try my other ecu to see if that solves my problem. Need to get an isc pigtail from a 91+. Want to make a plug and play adapter so I can easily go back in forth with isc instead of extending my stock wires.

 

[1990dsmkid]

Got my adapter harness made. Plan on trying it out and testing my two 91+ iscs. Hoping to have my idle figured out tomorrow.

 

[99gsxboy]

Hopefully it's the isc and not the ECU, since you have the iscs on hand.