So I've owned the 91 GW about 7-8 weeks and have been driving it frequently to learn all of it's little quirks before making any serious changes. Sadly my wife took it on some errands a couple of days ago and it chose that trip to lay down and die.
It wouldn't idle at all just shut itself off, so I played feather the throttle and managed to limp back home. I've checked the anti-diesel solenoid and it appears to be working as it should. It cold starts just fine but as the choke begins to open and the idle slows down it begins to surge up and down. Checking with a tach it's surging between 450 and 850 rpm constantly just like it was breathing. I've tried to make some adjustments to the throttle plate screw and anti-diesel solenoid trying to hit a point where it stops surging. Finally around 1000 rpm it stabilizes and holds that rpm but sounds like it has a performance cam in it which I'm pretty sure it does not.
Engine appears to be dead stock, 2150 carb and all of the mindlessly complicated emissions controls and vacuum hoses are intact. I've never worked on any car from this time period with all of the smog controls so it's pretty confusing. Any thoughts or advice would be greatly appreciated.
It wouldn't idle at all just shut itself off, so I played feather the throttle and managed to limp back home. I've checked the anti-diesel solenoid and it appears to be working as it should. It cold starts just fine but as the choke begins to open and the idle slows down it begins to surge up and down. Checking with a tach it's surging between 450 and 850 rpm constantly just like it was breathing. I've tried to make some adjustments to the throttle plate screw and anti-diesel solenoid trying to hit a point where it stops surging. Finally around 1000 rpm it stabilizes and holds that rpm but sounds like it has a performance cam in it which I'm pretty sure it does not.
Engine appears to be dead stock, 2150 carb and all of the mindlessly complicated emissions controls and vacuum hoses are intact. I've never worked on any car from this time period with all of the smog controls so it's pretty confusing. Any thoughts or advice would be greatly appreciated.
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