Quote:
Originally Posted by Nate's Alero
if it was in 3, then the light on the dash would view as 3, the Cluster lights get the signal from the PRND thing
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Ah gotcha, wasn't sure if it had a light signal or what.
Still, my thinking is in the trans... maybe. Unless the rpms are so high that you gotta mash the pedal all the way down to make it go that fast.. in which case the trans wouldn't shift because it'd see high load.
Make sure your power's there:
first... does it accel OK? If not, they you very well may not have the power to cruise at low rpms like you used to. if it pulls just the same, chances are you'll be ok, but if you'd like run through these tests
pull the plugs... are they ok? good.
resistance on wires should be around 1k ohms/ foot.. make sure they're ok..
use a spark tester to make sure you have enough power from all 3 coils (should be able to do at least 30kV)
Run a compression check. 4th puff should be 150.. little higher's good, much lower.. ehhh. 1st puff should be at least 1/2 the 4th puff. If the 1st puff's low, but it pumps up ok in the end.. bad rings stealing all your power.
Run a leak down test, too. 10% leakage is good. 20% is acceptable. 30% + you need to look into. Listen for where the air comes out, too.
-intake- burned injector valve
-exhaust pipe- burned exhaust valve
-dipstick- works bore/ rings
-bubbles in the radiator neck- blown headgasket
Check for fuel pressure at the rail.. if it's OK chances are you're good. Clogged injectors would misfire and set a check engine light.
If it passes all of those tests it should probably have enough power to cruise at a low rpm like it should.
To diagnose the trans:
Well, try taking it out and very slowly accelerate. Look for 5 shifts... 4 gears and the TCC lockup. If it doesn't shift 5 times you lost a gear or the TCC.
If you did indeed lose a gear, and the car's not cruising in OD..
check your trans fluid... is it nice and red? Or is it dirty black?
Has it ever been flushed?
Miles on the transmission?
It may need to be flushed, the oil passages may be clogged, or something.. who knows. If it's been 50000 miles or more since the last flush/ pan filter change, DO IT.
When you drop the pan see what's in it.. if there's metal, sorry you're toast, it's time to pull it and open it up to see what blew up. It should be a layer of slimey stuff (clutch material). If there's anything in the pan that isn't a very fine powder/ is chunky.. you're lookin at cash monies.
Check to make sure all the solenoids work.. might need to take it to a shop for that, but if you're lucky you've got a mech buddy...
They make manual shifters for this process.. basically you unplug the trans from the TCM, and in it's place plug in a box that lets you manually shift gears and engage/ disengage the TCC. If you can manually shift it through the 4 gears and TCC, then you have a bad TCM or bad wiring between it and the trans.
If you did indeed lose a gear because of a solenoid.. you'll have to do some surgery and replace the solenoid/ solenoid block, whatever it is.
That's what I'd do.