1800 Challenger 01
Active Member
Hello Everyone,
I have a 2001 Challenger 1800 240 EFI M2 Gen 1.
I have this really weird issue, I can always start the engine, not right up, but after few tries. The engine starts, runs for 2 seconds or so and then dies.
I fixed few things which were bad, but still have the same issue, but now I am able to always reproduce this issue every single time. Before those fixes, the boat was not even turning on some times.
Fixes:
- The fuel pressure was low and I figured that the high pressure pump in the VST was broken, so I changed it. Pressure test now is good, stays 36 psi for minute/s
- The inline fuel filter attached to the primer pump was a bit clogged, so I cleaned it.
- I changed the water separator filter.
- New battery
- Changed spark plugs
- TPS sensor was giving very wrong readings, so I thought that is the problem. Changed it (ouch). Now, new sensor works kind of okay (0.2 V -> 5.2 V), but still same issue.
Now, I will explain the weird part.
- If I turn the steering wheel to left or right (which pulls a cable to give more throttle), the engine starts and stays up for as long as I am holding the steering wheel. If I pull more on steering wheel, the RPM goes higher, if I let go of steering wheel, 2 or 3 seconds and the engine dies.
- While turning the steering wheel and keeping engine on (1200 or so RPM), then I shift lever from N to F or R to release the throttle lever lock, then if I move the throttle lever up a bit, then I feel the RPM goes a bit down (like the reverse of what should happen), but only a little bit, then if I move the throttle lever up more nothing happens all the way until around 60%. So, almost no effect to throttle from 0 -> 60% (except some negative effect). Then after 60%, the RPM starts increasing and only then I can release the steering wheel and engine will stay on. Moving throttle beyond 60% will keep on increasing the RPM. I obviously didn't really check anything higher than 2500 - 3000 except for a split second, but engine seemed very responsive.
All tests were done on the trailer because it is quite hard to try it on water.
I have been trying to fix it since last year, so I might have done few extra things that I forgot to mention, but any pointers as to what else I should be doing?
Hardly any local mechanics work on these boats. I found one and sent him the boat hoping he can get an error code or something from the computer, but they are so busy and they hadn't looked at my boat yet (been more than a month). Also, I heard few people saying that the best person to work on your boat is yourself. So, I am hoping the great community here will guide me through this.
I have a 2001 Challenger 1800 240 EFI M2 Gen 1.
I have this really weird issue, I can always start the engine, not right up, but after few tries. The engine starts, runs for 2 seconds or so and then dies.
I fixed few things which were bad, but still have the same issue, but now I am able to always reproduce this issue every single time. Before those fixes, the boat was not even turning on some times.
Fixes:
- The fuel pressure was low and I figured that the high pressure pump in the VST was broken, so I changed it. Pressure test now is good, stays 36 psi for minute/s
- The inline fuel filter attached to the primer pump was a bit clogged, so I cleaned it.
- I changed the water separator filter.
- New battery
- Changed spark plugs
- TPS sensor was giving very wrong readings, so I thought that is the problem. Changed it (ouch). Now, new sensor works kind of okay (0.2 V -> 5.2 V), but still same issue.
Now, I will explain the weird part.
- If I turn the steering wheel to left or right (which pulls a cable to give more throttle), the engine starts and stays up for as long as I am holding the steering wheel. If I pull more on steering wheel, the RPM goes higher, if I let go of steering wheel, 2 or 3 seconds and the engine dies.
- While turning the steering wheel and keeping engine on (1200 or so RPM), then I shift lever from N to F or R to release the throttle lever lock, then if I move the throttle lever up a bit, then I feel the RPM goes a bit down (like the reverse of what should happen), but only a little bit, then if I move the throttle lever up more nothing happens all the way until around 60%. So, almost no effect to throttle from 0 -> 60% (except some negative effect). Then after 60%, the RPM starts increasing and only then I can release the steering wheel and engine will stay on. Moving throttle beyond 60% will keep on increasing the RPM. I obviously didn't really check anything higher than 2500 - 3000 except for a split second, but engine seemed very responsive.
All tests were done on the trailer because it is quite hard to try it on water.
I have been trying to fix it since last year, so I might have done few extra things that I forgot to mention, but any pointers as to what else I should be doing?
Hardly any local mechanics work on these boats. I found one and sent him the boat hoping he can get an error code or something from the computer, but they are so busy and they hadn't looked at my boat yet (been more than a month). Also, I heard few people saying that the best person to work on your boat is yourself. So, I am hoping the great community here will guide me through this.