I have been having a strange issue with the car lately, that I would like to share with you, hopefully we can get to the bottom of it. The car is 1991 Auto NA.
Recently the car has developed this starting issue, it used to start up fine, but sometimes it takes a few cranks, and sometimes it wont start at all.
Few times it has cut out, like waiting at redlights, or sometimes It cuts out after 5 seconds of starting, sometimes after 30 seconds. Most of the times its fine.
I have also noticed it is sluggish sometimes, when I put my foot down, it takes its time. But other times it goes like a rocket.
The thing I have noticed the most is that it wont start again, after a long drive. Lets say I drive it none stop for an hour or so, then leave it for a bit, then it wont start again.
If it does, it cuts out.
The things that are new on the car:
- New alternator
- New spark plugs
- New HT leads
- New starter
- New radiator
- New thermostat
- Refurbished ecu (tried 2 of them)
- New alarm (nothing invasive, it only has crank cut out)
- New fuel filter
- New gaskets (rocker covers, plenum)
I have checked the fuel pump, it has power, and I can hear it run when cranking.
I have checked the pinouts on the IAC all seem to be fine 30 Ohms across all pins.
I can hear and feel the IMF relay click, so I don’t think that is the issue.
Car starts great when cold, even starts great when warm, just sometimes it doesn’t.
I am running out of things to check, the only other things left are the fuel regulator and the injectors.
If anyone has experienced this or has Any advice would be highly appreciated, as its driving me mad.