Howdy,
Came across a bit of a weird miss with my Nav on the weekend and was wondering in whether anyone had experienced the same problem.
Seems that whenever I grab low range and hold part throttle (say to climb a hill), the engine gets a hesitation.....almost like it's missing. It manifests as little surges, as if you're gently bouncing on the throttle (no, I wasn't bouncing on the throttle). Symptoms are:
- Low range problem only. Switch to high range and it disappears immediately.
- It occurs on flat or climbs. Not an issue under deceleration/decent
- It only occurs under load. Trying a dry run in neutral doesn't replicate the problem
- It only occurs on part throttle. Deceleration or modest acceleration alleviates it until you go back to part throttle again
- Seems to occur throughout the rev range. That said, I didn't labour the engine or rev it hard, so maybe it goes away at the extremities of the range; I'm not sure.
- It's pretty constant. You can go from low range to high range and back again and it immediately reappears.
- No apparent "misfire" type symptoms in terms of audible queues.
Has anyone else come across a similar issue?
I thought it could be the suction control valve, the aftermarket chip and any number of other things, but the issue is that it only occurs in low range. I would expect common things like the chip to be a problem regardless of what ratio you selected in the transfer case.....
Help?
Many ta's.
Came across a bit of a weird miss with my Nav on the weekend and was wondering in whether anyone had experienced the same problem.
Seems that whenever I grab low range and hold part throttle (say to climb a hill), the engine gets a hesitation.....almost like it's missing. It manifests as little surges, as if you're gently bouncing on the throttle (no, I wasn't bouncing on the throttle). Symptoms are:
- Low range problem only. Switch to high range and it disappears immediately.
- It occurs on flat or climbs. Not an issue under deceleration/decent
- It only occurs under load. Trying a dry run in neutral doesn't replicate the problem
- It only occurs on part throttle. Deceleration or modest acceleration alleviates it until you go back to part throttle again
- Seems to occur throughout the rev range. That said, I didn't labour the engine or rev it hard, so maybe it goes away at the extremities of the range; I'm not sure.
- It's pretty constant. You can go from low range to high range and back again and it immediately reappears.
- No apparent "misfire" type symptoms in terms of audible queues.
Has anyone else come across a similar issue?
I thought it could be the suction control valve, the aftermarket chip and any number of other things, but the issue is that it only occurs in low range. I would expect common things like the chip to be a problem regardless of what ratio you selected in the transfer case.....
Help?
Many ta's.
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