I own a 1984 firebird with an automatic tranny, and when you drive it, it doesnt want to shift to the next gear until you get the rpm's up to about 3500 rpm, and then when it finally does shift its a very hard shift. Ive already changed the fluid and checked to see if there were any metal shavings anywhere but there wasnt any at all. But anyways can anybody tell me what the problem might be and how much it would cost to fix that type of thing.
2006-08-09 07:37:45 · 11 answers · asked by screaming chicken!!! 1 in Cars & Transportation ➔ Maintenance & Repairs
that should be a 700R4, so sounds like you've got a throttle valve stuck in the valve body of the transmission. Here's how you check: With the engine off, hammer gas pedal to the floor hard about 5 times and then crank engine and drive to see if problem goes away. If not you 2-4 band or servo is damaged.
2006-08-09 07:47:26 · answer #1 · answered by michael081278 4 · 0⤊ 0⤋
You need to identify the transmission but I can summarize.
It is not the governor. If it were it would not shift at all. The 700R4, 200-4R,200C use a cable actuated throttle valve to regulate shift point for engine load. Make sure first that the cable is still attached to the throttle lever in the engine compartment. If it isn't you've found your problem. If it is, the cable or the valve may be jammed. If there is any fraying of the inner steel cable it will need to be replaced.
Disconnect the cable from the throttle. pull the cable. It should move smoothly out and spring tension should pull it most of the way back. If it is moving loose without any spring retraction, the throttle valve could be scored or have debris in it. You might be able to free it temporarily but more than likely the valve body will need to be removed to clean the valve completely. The most common cause of this is metal particles coming from a failing component. If there is a fuzzy magnet (lots of steel) or a bronze layer of sediment (bushings and washers) you'll need to disassemble to locate the damage.
Hope this helps.
2006-08-09 08:22:43 · answer #2 · answered by Arnon 6 · 0⤊ 0⤋
You should have a 200R4 Automatic Transmission Factory. You did not give us the details, like how long ago the tranny was serviced, any modifications were done, was it used as a hot rod by the previous owner, etc. Sounds like the tranny is worn, or the tranny modulator needs replaced, also check to see if the transmission modulator vaccuum tube is hooked up. Check for binding in the detent cable, (passing gear cable)
2006-08-09 07:48:20 · answer #3 · answered by Anonymous · 0⤊ 0⤋
2004R trans might be a 700R4 but i doubt it TV valve is hanging up while running you can flip your TV cable by (hooked to )your carb.6-7 times this might help also you can drive the car at about 65-70 mph quickly shift it in and out of gear(neutral-OD)while keeping the same RPM's this can free up the TV valve anything can stick the valves metal valves aluminum valve body
2006-08-09 19:37:12 · answer #4 · answered by damn_van098 2 · 0⤊ 0⤋
Sorry, I don't know the answer, but a few years back, I had the same problem with my GMC truck.
At five different shops, I asked the question: Do you guys know what's causing my tranny to shift weird? I got the same answer:
"YUP, it needs to be gone through"
But, what is the CAUSE of this?
"it needs to be gone through"
I spent 1500. for a "racing" trans that lasted 6 months.
Wish this forum was available at that time
2006-08-09 08:01:41 · answer #5 · answered by Trump 2020 7 · 0⤊ 0⤋
On this car, I believe,there should be a valve on the side of the tranny that is actuated by vaccuum, hence the high rpm's to shift
2006-08-09 07:45:08 · answer #6 · answered by CassH 2 · 0⤊ 0⤋
Yep! Easy problem, most likely. In the older transmission the control bands lossen over time cause late hard shifts. This is most likely your problem, and it is fairly easily fixed. I myself do not mess with my transmission, so I let a mechanic do that sort of thing. It shouldn't cost much more than a transmission servicing. 100-200 bucks, I would suppose, don't quote me on that.
2006-08-09 07:43:15 · answer #7 · answered by Anonymous · 0⤊ 0⤋
--Stripped gear on the governor or binding valve in the governor itself
--throttle valve cable adjustment or bad cable
--throttle valve in the valve body stcking
Any of the above could cause that condition and were all common problems with the trans in your car.
2006-08-09 07:51:37 · answer #8 · answered by Imerc 3 · 0⤊ 0⤋
My guess is that your throttle valve control cable is out of adjustment pretty easy fix if it is..
feel free to email me if you need further info.
2006-08-09 08:03:17 · answer #9 · answered by mid_mo_fencing 2 · 0⤊ 0⤋
Does it do this all the time or just when it is first started? It could be modulator valve going bad.
2006-08-09 07:45:48 · answer #10 · answered by smoke 4 · 0⤊ 0⤋