you will probably find that the sync pulse cam signal you were messing with will work now too.and you may need to change the air gap again.glad i could help many brains many ideas you did say you thought it was a hardware issue and it was LOL
you will probably find that the sync pulse cam signal you were messing with will work now too.and you may need to change the air gap again.glad i could help many brains many ideas you did say you thought it was a hardware issue and it was LOL
post a new log so we can see the difference in rpm spikes
Tried the IAC wire change but it still did the exact wrong thing. Swapped 2 and still? So I need to work on IAC issue.
But I can get it to idle, I think this mask has issues with IAC counts and idle. Revs up and pulls good. Here's a log to look at. I'm whooped and need to hang out with my chair for alittle while. Feelings now are it's in the tune along with IAC issue.
1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
-= =-
oh my what a beautiful rpm trace now LOL pretty damn smooth
Humm. What year did the iac come from? I know this worked with the factory iac from my 93. I remember when trying to find the right combo of wires, having the same issue, it worked but was opposiate, I swapped two more wires and then it worked like a charm, thats the above combo I wrote down for future reference.Originally Posted by EagleMark
I just pulled up the wiring diagram for my 93 and it shows pins A & B as one coil, with pins C & D as the other coil.
79 Jeep Cherokee, AMC 401, T-18 manual trans, hydroboost, 16197427 MPFI system---the toy
93 Jeep YJ Wrangler, 4.0L, 5 speed, 8.8 rear, homebrew hub conversion and big brakes, hydroboost, 2.5in OME lift, 31x10.50's---the daily driver
99 Jeep WJ Grand Cherokee limited, 4.0L, auto, 2wd, leather and power everything, 99% stock---the long distance highway ride.
Well I got the Jeep IAC worked out today and the Toyots runs great from cold start idle to warm start and driving!
Well OK still needs a final tune but we are in ballpark!
Since the Toyota does not have a IAC that would work I used the trick from 1projest2many and got a Jeep 2.5L or 4.0L IAC and housing. A GM IAC looks identical, but is not and won't fit.
Use the Jeep IAC housing and make a plate for back with hoses and POOF! And external IAC for conversions.
and
But the Jeep IAC does not have the coils set up same as GM!
GM A-B and C-D
Jeep A-D and B-C
Also direction comes up backwards if you just swap over. So you'll notice the power wire = White stripe are swapped as well!
Final wiring from GM to Jeep IAC in tested working condition on the vehicle is.
A = Blue/White
B = Blue/Black
C = Green/White
D = Green/Black
1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
-= =-
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