1 have a 1996 geo metro,transmission shifts in all gears fine,but at 65mph it seems to be running at a high rpm an after the car runs for approx 80 miles or more the engine lite will come on an the code p0780.can any one help me solve this problem.

my guess is its not electric shifted, (what trans model is it)
so step 2 in the FSM book says.... and i paraphrase
step1 is stall test (my guess passes in 1st and reverse)
step 2, line pressure test?
if that fails, tranny is bad.

I agree. It sounds like you are not going into overdrive or lockup.

probably the synchronisors or possibly shifting fork

that is the TCM
the TCM transmission brain, needs to be scanned !
Do not overfill the trans, fill it using the instructions; do not guess.
so does Drive always work in 1st, gear car moves ok.
and reverse.,.

only fails to up shift in drive that it, ??? post symptoms more clearly
please...
there are like 50 bad symptoms possible on any A/t
1996 in the USA (are you or in Canada?)
is a major car redesign, here, OBD2 laws, et cetera.

and when they did that (some suzuki's) the TCM still is using old rules. old TCM retained, seem not on this car...

later they moved Mrs. TCM into the ECU box. and renamed it PCM.
that is the short history on most 96 cars made.

why not buy a used service manual on this car, off fleabay
and see all that uniqueness to this 96 car.

A metro is are really a GM modified, Suzuki SWIFT.
see hood sticker it states that clearly. (up under)
adding to the uniqueness of any 96 car the GEO mods.
i looked online for you.


it shows the M60 3speed trans
shows its controlled from the PCM (its integrated)
6 gear shift wires, that must work
2 wire VSS speed sensor (clean it ?)
2 shift solenoids.

ever heard of a scan tool?
any USA scan tool works on a USA car, 96, (98 in canada)
plug it in,
best is to driven and scan to see all errors. (2 persons dig?)
then see DTC errors, P07xx errors
the errors must be corrected. first.

recap.
1: check fuses.
2: check levels (not guessing,hot in park, read manual)
3: scan it with any obd2 scan tool made.

post results

http://cgi.ebay.com/ebaymotors/GM-Geo-Metro-5sp-FWD-Transmission-Rebuild-Kit-87-on-_W0QQcmdZViewItemQQfitsZModelQ3aMetroQQhashZitem562da3575aQQitemZ370132866906QQptZMotorsQ5fCarQ5fTruckQ5fPartsQ5fAccessories

it would be cost effective to get a used transmission from Ebay. or a direct importer from Japan

Before guessing at transmission problems, check the fluid level (car warmed up, engine running in Park on level ground) and have the PCM scanned for trouble codes FIRST.
Shift suddenly become very hard. When going from park to either reverse or drive it slams into gear. 1-2 and 2-3 shifts are also harsh. All gears seems to work. Problem may be intermittent: Check TPS for smooth electrical response. If the response is jumpy or erratic at all, replace TPS.
Thank you for using fixya and keep us posted.

There is a transmission controller that is located under the dash beside the right hand side of the steering column. It is held on to a bracket by two 10mm bolts. A change in that transmission control computer will make the transmission shift like new

Auto Trans I had to replace solenoid in transmission there are two of them when you drop the pan. After testing with a 12 volt battery one was bad replaced and transmission works fine. Mine was a 1996, cost about $90 for solenoid.

there is a white plastic knob on the vsv /firewall twist that out or in to adjust with ac on car running ?

The check balls I put back in were slightly larger. You should be able to get them from any transmission shop or the Chevy dealer. I got my gasket from the Chevy dealer.