See below After having replaced the transmission ( and prior to), RPMs are revving without touching the accelerator. Help!

Could be just a fluid and filter change in the tranny. Have the trans. checked out.

Not sure what you have determined the truck is doing

If the rpm flairs the trans is slipping & done

If it won't go over 40 mph the exhaust converter is damaged
& blocked

Not much you can do,need professional help

if engine is revving and in drive and does'nt move must be a gearbox /drive train problem,is it a manual gearbox ? if it is then i'd say get the clutch changed as pressure plate failure would cause this type of sypmptom let me know how you get on

sounds like transmission problem? check it out at a shop. does it sound like its revving high through out acceleration? my murano stays at 2-3k at those speeds

hi this sounds more like it is either low on transmission oil or your torque converter might be damaged in some way, the reason why i think its the transmission is the revving of the car, normally if it was something to do with the engine/motor it would give you less rpm rather than more, so i would start looking at the transmission rather than the engine/motor...hope this helps..ps, just a hint as some people do not do this, but to check your transmission fluid is up to the correct level, make sure the car is on idle, this will give you a true reading as to how much transmission oil is needed...

Before buying the module read this TSB
(http://www.mn12performance.com/mn12-...tsb-98-8-7.pdf). I had the
same problem. However, I also needed a tanny rebuild so I opted to replace
the torque converter with a High Stall unit.

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Thats not good. Usually if you are having to rev the engine the line pressure is really low. either the pump is going bad or your have a huge leak somewhere. If reverse works fine without revving then it isn't the main pump.
Long story short someone is going to have to get pretty dirty. The transmission will likely need rebuilt. You might have someone check the valvebody just to make sure something isn't stuck. A look at the pan will give a good idea how much wear is on the rest of the transmission.

You have most likely poked holes in the oil pans for the engine and transmission, or oil lines for them. You will have to go under the truck with some rags and start wiping things off looking for dents and or holes. Leaks will oil back up quickly when you wipe them off. If you see puddles of oil under the truck start there. You are probably looking at replacing these pans and lines which wouldn't be too expensive but you could also be looking at replacing the transif it has burnt out. Check the fluid level and for color and smell. If the trans fluid is brown or black and smells burnt you will have to change it. A scrap yard will be your best betfor another trans, $500 or so depending on the yard. Get some skid plates if you are going to keep on off-roading. Hope this helps.

Sounds like your TPS is receiving full resistance. If cable type check cable and the lever on the throttle body, if fly by wire then it may need a new TPS

BUICK RENDEZVOUS IDLES UP REALLY HIGH...WITHOUT PRESSING GAS. WHAT IS THIS?