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I have a 94 buick la sabre stalls when warm has
Sounds like you a loose 12V connection at the relay box.Locate the relay box and when the engine is running wriggle the wiring harness or shake the relay bow and see if that's when the engine stalls. You may even have a bad / loose ground to the relays.
on Jul 26, 2018
My 1994 Buick Lesabre
Classic signs of coolant in the oil and since heads were repaired and sealed, it could be a cracked block.
Coolant is mixed in oil and coolant impedes lubrication of engine thus hard to turn over and start.
One last hope is to drain crank case, refill with fresh oil and new filter.
Add Barr's leak "copper" )(looks like liquid copper and costs about $10) sealant to coolant fluid. Run the engine a few times to full warm up, each time observing for tell-tale white smoke from exhaust. Check dipstick level between each cycle.
If problem subsides, go buy a lottery ticket as you're very lucky. If not, a new engine or short block is on the menu.
on Sep 22, 2017
1994 DELICA TURBO 2.8 DIESEL
i have same problem with my 92 2.8 delica, it is the fuel pump front seal leaking/losing fuel, into crankcase, then on cranking after cutout re-fills then ok for the rest of the trip, cheap fix replace seal[if shaft isnt too worn]or overhaul complete pump. hope this helps you Ian.
on Feb 12, 2017
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