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i have a 1990 chevy silverado 350 auto transmission ...
Sent to Car Experts July 11 05:14 PM

i have a 1990 chevy silverado 350 auto transmission that stops running at operating temp only in gear only while at a stop   i have replaced idle air control   throttle positioning sensor map sensor temp sensor oxygen sensor and the ecm (computor) what am i overlooking??   this is driving me crazy!!   no codes.....except one from the brake light that was indicating a bad proportioning valve...which i have not replaced....one other thing the speedometor periodically acts erratic   please reply to richard   XXXXX@XXXXXX.XXX

 

Optional Information:
1990 Chevrolet silverado 350

Already Tried:
changing parts including everything previously mentioned plus new plugs wires cap and rotor

Customer (name blocked for privacy)
Status:  Closed   Value: $10
Answer
July 11 5:35 PM (21 minutes and 4 seconds later)
         
REPLIEDCheck Mark
You might want to check the transmission. what you might be experiencing is a torque converter lock up condition.The clutch in the converter is controlled by a solenoid in the trans that can stick closed not allowing the clutch to disengage, which will kill the engine at a stop.
Bryan -- shop owner -- No feedback on 4 Car accepts
15 years experience, shop owner, automatic transmission specialty
Reply
July 11 7:50 PM (2 hours and 14 minutes and 29 seconds later)
         
Reply to Bryan's Post: thank you for your advice please tell me how to "check" this problem what is the procedure?
Customer (name blocked for privacy)
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