1996 Hilux-surf 2.7l I4 3RZ-FE (JDM 4Runner) 4x4 - No start fixed now rough idle/randomly dies
What’s New: battery, alternator, battery terminals, spark plugs, spark plug wires, rotor, cap, replace magnetic part of distributor while I was at it and it started and ran.
What happened: it started dying on my friend I was away on orders for 3 months, I come back and it was a no start, no spark, so I got it running by changing out the entire ignition system and replaced parts inside the distributor. The timing is good 5 degrees BTDC with TE1 and E1 jumped. 10 degrees BTDC without it jumped and it runs good BUT.
Current issue: it idles at 1100 and when I’m driving and stop for a while it will idle to zero and die randomly. I took apart the throttle system and cleaned it out there wasn’t that much carbon build up. However I couldn’t get the IACV off to clean it the bolts where striping but everything else looked clean.
What I noticed: the entire time the check engine light has not been on and when I jumped TE1 and E1 it was flickering this is making me think it’s the ECU/ECM explaining the ignition problem
Other detail: I didn’t change alternator or battery my friend did because it broke down on him while I was away. He changed them at the same time and thinks he fried something electrical.
Other possibilities: I’ve read coolant sensor, and eliminate IACV first before worrying about the ECU Because it so expensive.
Any help would be awesome thank you!