Underpowered tb42 auto!

[coolummatt]

Hi all. Can anyone help me. I have a 96 tb42 auto. I've only had it a couple of months now and I have notice some times on the beach it can be a little underpowered in soft sand. Even in first gear with my foot flat it doesn't want to rev over 2000 rpm. It has not been to much of a problem yet but adding a camper trailer at 750kgs im a little worried im going to get stuck.

Also today I picked up my new camper trailer. Seems to tow really well on the hi way until I get to a hill the it just dies in the arse quickly. Is this normal?

Thanks.

[taslucas]

Gday mate, the tb42 should rev way higher than that. Is it dual fuel? If so, does it do it on both fuels?
I would check the ignition and fuel side of things to make sure everything is in good working order. Points, rotor button, distributor cap, leads, spark plugs, coil and timing should all be checked. Also check the fuel filters. There will be one in the engine bay and usually another one closer to the fuel tank. If they are clogged the engine will lose power. Look for any vacuum hoses that may have come off (around carby and intake manifold, and also the vacuum advance to the distributor). Also wouldn't hurt to inspect the carby for anything obvious problems and give it a good spray with crc or similar to lube up all the linkages.

[coolummatt]

I should have mentioned its an efi. Also it drives fine on the road and will rev all the way to red line with no problems. It only seems to be in deep boggy sand that it wont rev.

[coolummatt]

Oh sorry its petrol only

[93patrol]

what tire pressure are you running in the soft sand as this can restrict the car from accelerating, also i would put an injector cleaner through it easy enough to get from car shops and some service stations, and as lucas said check all fuel filters ans when was the last time the air cleaner was checked??

for added measure i would take the air intake hose off and clean the throttle body with some carby cleaner you might find it to be a bit dirty with carbon and such best to do this whilst its running

[coolummatt]

Thanks I will have a look at that today. I run about 25psi on the beach

[92GQ]

Thanks I will have a look at that today. I run about 25psi on the beach

What size tyres are you running at 25psi?

[taslucas]

Even on 35s at 25psi it should rev past 2000rpm in first?

[coolummatt]

Im running 32 AT

[93patrol]

But if it's a hungry beach it's still going to struggle go down to between 15-18 psi you'll find it a lot easier and you won't put so much pressure on your drive train