2000 Bonnie Weird RPM's

[Orbitz]

Hi all. Been having some strange problems with the Bonnie. When going up a hill at a constant speed (say 50 KMs an hour) the idle will go up and down 100 or 200 every second or so. There is no rhyme or reason to it. I recall it doing it hot and cold. I have had problems with the coil pack, it was causing it to studder something terrible, so I replaced it with a used part. The used part took care of the problem, but then she started stalling whenever it suited her. Thanks to you guys, I figured out it was the crankshaft position sensor, so I had that replaced and she runs fun again, other then this problem. One mechanic I took the car too said to have the CPS 're-learn' done, but two other mechanic's say if the CPS needed a re-learn done, it would throw a code, and there are no past, present, or pending codes coming up (local dealerships want $100+ to do the re-learn, so if it isn't necessary, I would rather save that). I notice sometimes too when I start it up, it she die a split second later. If I turn the key, she will fire right up again and act like nothing is wrong.


Plugs and wires were done last Christmas (both AC/Delco's, as per recommendations from this group), as was the fuel filter. Car has 155,500 KM's (around 96,000 miles) and was meticulously maintained by the original/last owner, and I try to do the same.

Any help is appreciated, thanks everyone!!

[01bonneSC]

Not sure who recommended the ACdelco wires but most of us would have said NAPA premium Beldin wire. But the Delcos are ok.

When going up hill, give it a bit more gas so the trans shifts out of converter lockup, does the surging stop?

The Torque Converter Clutch solenoid (TCC) has been a known problem in with the transmissions.

And I dont believe the CPS needs a relearn, theres nothing for it to learn.

[Archon]

You'll probably find this information useful.
http://www.tripleedgeperformance.com/TC ... ation.html

[Orbitz]

Thanks to you both. I will check the MAF sensor to make sure it is clean, as per the recommendation in the link, but if it is the TCC, is this replaceable, or would a new transmission or a rebuild of the current transmission be required? How long would I have with this transmission? Any advise? Thanks again