Hi guys,
I have a few questions I'm hoping for some input on.
So - basically I'm gonna have to do some engine work this winter. I have no idea how far I'm gonna have to delve into the engine before I'm done, and just to have some reference for when it gets back to running order, I decided to have it dyno'ed. After one run the engine threw the belt for the water pump/alternator and boiled off 6 liters of coolant, so we left it at that. I got home safely after putting the belt back on and refilling the coolant.
The reasons I'm going to go into the engine in the first place is that I have had a small coolant leak, that has escalated to a rather more substantial coolant leak. It originates somewhere inside/under/behind the water pump. Also I have had the rather unpleasant surprise of the engine stopping without warning a couple of times, always on level road, going steady at around 80-90km/h, steady throttle, all guages normal until.... ....engine stops. When I restart the car it immediately dies - unless I keep the RPMs at around 3000-4000 for 1 minute or 2. After that I can ease off the gas until we reach normal idle, and the the car starts acting totally normal again. (Until next time the engine dies mid-cruise.)
Are the diverse symptoms somehow related, in the minds of people who know about cars in general and/or DeLoreans in specific?
- Water leaking from around water pump somewhere.
- Engine threw the belt for the water pump/alternator when dyno'ed
- Engine has tendency to mystery-quit when cruising
- Dyno says 113HP (tech says that is at the engine)
Dyno vin 10207.jpg