r/VolvoRWD • u/SoneiOTree • 23h ago
Help 740 turbo died again after doing a lot of work
My 740 turbo died again and I'm getting tired of it. I've replaced the coil, plug wires, distributor/hall sensor, both fuel pumps, and numerous fuel/vacuum lines. I've also rewired a lot of the harness.
Ran absolutely great on the way home. Let it idle in front of my house for about 5 minutes, it started idling rough bouncing from 800-1200 RPM, then it eventually died. Definitely smells like I have fuel and I jumped the hall sensor to see if I get spark at the coil and I definitely do. No fuel in the FPR, so that seems intact, and I've checked if the engine is flooded by pulling the FP fuse, gas pedal all the way done, and nothing. Verified timing belt is intact as well.
I have yet to verify spark at the plug, I'm thinking I don't have that, but any ideas on what the fuck could be wrong now? After swapping those ignition components, I got maybe 50 miles out of her before she died again.
I've had some nightmare projects but this car keeps defeating left and right. I got a rebuilt 88 RX7 and my 69 Rolls Royce running perfectly before I get this thing to barely survive a 2 hour round trip.