I had the same problem in my '94 VR4. My problem is that I live less than 3 miles from where I work. These cars need to be run. My mechanic told me to put in fuel line/injector cleaner and take the car out and run it at highway speeds for at least 30 minutes. Give this a try. It worked for me and cost less than $10.
Will do thanks, recently changed it however unsure if the car did it previously as just recently got the car and changed the PTU to see if it resolved the tacho (which it didn’t it was the capacitors on the tach).
Mine only has 4 pins on, seems to be working fine though.
Found a vacuum leak next to the inlet manifold where all the vacuum lines connect there is two lines missing they seem to be tucked behind tied together and blanked off. The area where they connect has not been capped so unsure if this is causing the issue need to get hold of a manual but believe the reason it is like this is the previous owner fitted a BOV.
So measured the resistance on the IAC (measured the wrong plug last time) and it was 39.2ohm across all the pins, fitted a new IAC and connected the vacuum hoses all up correctly, and now drives spot on
I see, ok I used to have the exact same problem. It would stall after it had warmed up. And sometimes would not run again untill I left it for a few hours.
I have a thread on here on what I went through untill I got to the source of the problem.
Long story short, it ended up being the CAS (crank angle sensor). Change that and car ran perfectly!
I’ll find the thread and send it to you. There is another thread online that shows how to change it properly. (That’s if you’re is a DOHC)
Mine is the DOHC, however never had an issue with starting it always starts up straight away and has no issues after it dies.
I’m trying to wrap my head around it as it didn’t do it when I got the car but have a feeling it started after I swapped out the PTU hoping that it would fix my RPM gauge (It didn’t I ended up soldering some new capacitors on the dash) so I feel like there would be no harm swapping the old one back in not sure if that would be related.
Going to pull the plugs and swap the PTU next weekend see if that tells me anything and go from there