I don't think the low ratio is working properly on my Isuzu Denver pickup. When selected, it struggles to pull away as though the handbrake is still on, or it is being held back in someway, it struggles to reach 10 MPH.
Just had it serviced, approx. 9500 miles, but the garage think it is ok, although the service receptionist didn't think it felt right. Any ideas on what could be wrong, or am I expecting too much??
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Rats
Is this on tarmac? Can't recall the exact set-up of a "Denver," but most Isuzu's don't have a central diff and engaging low range automatically puts it into four-wheel-drive and this causes severe "wind-up" stresses in the transmission if the wheels can't slip to dissipate them.
Have you tried it on a loose surface. What does the handbook say about engaging low-box? Does it warn against doing it on the road?
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I seem to be having the problem on slippery mud surfaces, although at the garage, they did try it in their car park. All the selection is electronic, but you seem to need to go to 4H before 4L. The handbook doesn't recommend using it on the road, stating tyre wear and poor fuel consumption. Will try it again at the weeknd on a loose surface.
Thanks for your reply.
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