SaltyBrick_MN
New member
- Joined
- Nov 2, 2020
**Ignition Coil was grounding somewhere. unplugged wire going to the tachometer and she turned over! For anyone seeing this down the road, test for spark and work backward!**
SOS! Box Down, Box Down!
My ‘92 245 (LH 3.1, M47) stalled on me this weekend. I was going about 50 mph, and it just died- didn’t overheat nothing weird before this happened. Got it towed home, and I haven’t been able to start it since. I've been through the forums and read through the countless threads, where most issues were resolved by either the fuel pump relay, an inline 25A blade fuse off the battery, or the crankshaft position sensor.
I'm getting no error codes (1-1-1), and all the systems clicked on in sequence (injectors, IAC, etc.) The fuel pump relay is new and doing its thing (clicking with ignition turn); pumps are new and kicking on. As far as I have seen and confirmed on my year of box, there’s no 25A fuse off my battery. My crank position sensor was hanging by a thread, so I replaced it with an OEM Volvo part but still nothing. Just cranks...
Parts replaced last 2k miles:
- spark plugs, gapped to 0.028
- cap+rotor, plug wires, ignition coil,
- fuel pressure reg, pre+main pumps, filter, all 4 injectors/seals
- IAC valve, throttle switch, coolant temp sensor
- Crankshaft position sensor
- Timing belt, tensioner, harmonic balancer
The ignition module tested good but was replaced, to be sure. Air Mass Meter is testing good (112 ohms) and cleaned with the proper cleaner. All electrical connections I could find have been cleaned and dabbed with grease. Grounds have gotten the same treatment. Compression was tested, and everything is within spec. I pulled spark plugs and could smell gas. I'm alone in this pandemic and have no remote switch, so it was tough to monitor spark. However, I did rig something up, grounding the plug to the engine block and recorded with a camera. No spark. As mentioned, I replaced the coil with a Bosch unit, and it's been running great until this stall/no start.
My last test before I rage quit and take it in is the ECU. I read somewhere that a bad ECU was the culprit for one stall-no start, but that was a pink label ECU. My ECU is a Bosch 000 572 (AF).
Any ideas?? por favor!!
SOS! Box Down, Box Down!
My ‘92 245 (LH 3.1, M47) stalled on me this weekend. I was going about 50 mph, and it just died- didn’t overheat nothing weird before this happened. Got it towed home, and I haven’t been able to start it since. I've been through the forums and read through the countless threads, where most issues were resolved by either the fuel pump relay, an inline 25A blade fuse off the battery, or the crankshaft position sensor.
I'm getting no error codes (1-1-1), and all the systems clicked on in sequence (injectors, IAC, etc.) The fuel pump relay is new and doing its thing (clicking with ignition turn); pumps are new and kicking on. As far as I have seen and confirmed on my year of box, there’s no 25A fuse off my battery. My crank position sensor was hanging by a thread, so I replaced it with an OEM Volvo part but still nothing. Just cranks...
Parts replaced last 2k miles:
- spark plugs, gapped to 0.028
- cap+rotor, plug wires, ignition coil,
- fuel pressure reg, pre+main pumps, filter, all 4 injectors/seals
- IAC valve, throttle switch, coolant temp sensor
- Crankshaft position sensor
- Timing belt, tensioner, harmonic balancer
The ignition module tested good but was replaced, to be sure. Air Mass Meter is testing good (112 ohms) and cleaned with the proper cleaner. All electrical connections I could find have been cleaned and dabbed with grease. Grounds have gotten the same treatment. Compression was tested, and everything is within spec. I pulled spark plugs and could smell gas. I'm alone in this pandemic and have no remote switch, so it was tough to monitor spark. However, I did rig something up, grounding the plug to the engine block and recorded with a camera. No spark. As mentioned, I replaced the coil with a Bosch unit, and it's been running great until this stall/no start.
My last test before I rage quit and take it in is the ECU. I read somewhere that a bad ECU was the culprit for one stall-no start, but that was a pink label ECU. My ECU is a Bosch 000 572 (AF).
Any ideas?? por favor!!
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