Issue is near the carburetor where linkages have been removed, bent, rusted, or modified. It should be connected to the transmission external throttle lever or internal linkage (cable system) where cable enters transmission. If vehicle uses a throttle lever or throttle cable, check that it is connected, moving with the
#CHEVY TURBO 350 TRANSMISSION TROUBLESHOOTING FULL#
Note: It is possible to be binding full open, or full closed, or somewhere in the middle.Throttle linkage or lever disconnected, binding.Early shifting, late shifting, or no shifting. But governor pressure is always managed by a fly weight device driven offĪbnormal shifting can take the following forms. Also, throttle pressure may be managed by a lever, or vacuum modulator. This does not take into account any downshift mechanism that may be used, such as a downshiftĬable, electric downshift solenoid, etc. Speed) until it is able to act on the 1-2 shift valve which may result with a 1-2 shift at 30 MPH. Another example, with hard acceleration, the throttle pressure is maximized, so the opposing governor pressure must build to a higher value (more road The throttle pressure is minimal, so the opposing governor pressure is able to act on the 1-2 shift valve at lower road Both pressures serve to act on the shiftĮxample, you drive normally with moderate accelerator pedal pressure. Throttle pressure represents how hard your foot is into the throttle (more throttleĮquals more throttle pressure) while governor pressure represents vehicle road speed (the faster the road speed the more governor pressure). These two pressures oppose each other while driving. These pressuresĪre throttle pressure and governor pressure. In many cases the transmission simply requires a good look for the root cause.Įvery transmission, sans the modern electronically controlled versions, have two hydraulic pressures working inside the valve body to control shifting at each shift valve. Sometimes the owner may think that the transmission requires over haul to correct shift qualityĬoncerns. Any ideas? Could it be both converters are bad? or both trannies? I just find it weird that the same things are happening with the new trans.Many times, a shift quality concern may be corrected by the owner, without special tools. Now I am totally confused on what to do now. Well all of a sudden I get a chunking sound and I turn the car off. Well I start up the car let it warm up and proceed to put it in gear and again nothing! Car will not budge! I decide to put it in park and let it maybe build up some pressure. I get everything put together put fluids in the whole 9. The car starts up and the engine is running fine, so I go to put it in drive and the car goes nowhere! I figure it's the trans so I pick up a rebuilt trans and put it in the car with a different 2 year old converter. I get the car pushed into a parking lot and decide to try and start it again. After a few second I try and start the car without any luck. All of a sudden a hear a very loud grinding sound coming from the trans so I throw it in park and shut off the motor. I get about 100 yards from home and I stop at a light. I let the car warm up as usual and start to to drive away from home. The car had been sitting for about a month and I had no issues previously. A couple of weeks ago I decided to take a drive. I have a 1950 Chevy with a 327 and a 350 turbo trans.
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