Do i have eloctronic solenoids in transmission or all vacunm? 305 motor -4 speed overdrive trans
OVERDRIVE SOLENOID IS IN THE TRANSMISSION PAN
SOURCE: Volkswagen Golf, 2003, auto transmission solenoid location
solenoids are starter relays, i don't know how that will be related to the transmission issue, their diagnosis might be a little off, so please get it doublecheck.
SOURCE: WHATS INVOLVED
No that hard, but your going to have to drop the Transmission pan, there are two identical solenoid at the back of the valve body with the pan removed.
The "B" (2-3) solenoid is the closest to the passenger side,"A" (1-2) is closest the driver side.I would go ahead and replace both as they are not that expensive.Spring clips hold them in place that can be removed with a small screw driver.
The "slipping" you're noticing,is most likely just the transmission shift pattern getting screwed up due to the malfunctioning solenoid.Probably more like a 1-2-2-1 or a 4-3-3-4 pattern depending on which way the solenoid is failing,or maybe it feels like it is starting out in 2nd or 3rd gear.
Once you get the solenoid changed and transmission fluid and filer changed, here is a little added performance you can do. Have the Servos replaced with the Corvette servos, the part is only $45.00 and take about 30 min to replace but less for you since you have the truck up on a lift already.
Good Luck and here is a link for the 4L60E improvement.
http://s-series.org/component/option,com_tech_article/Itemid,/item,6/task,item/
SOURCE: shift solenoid
The solenoid comes out with one screw and one wire connection once the pan is dropped.
SOURCE: What does code P0753 Shift Solenoid mean?
P0753 means your powertrain computer detects a continuous open, short to ground or short to power in the circuit to your transmission's 1-2 shift solenoid. When the code is active, your transmission runs in a fail safe/limp home mode that only lets certain gear ratios function in the transmission.
The solenoid in your application looks like this
and it is located sometimes on the side of the transmission, but my guess is from the looks of it, it might be found inside the transmission, only accessible with the oil pan removed.
The problem might be the solenoid itself, or the wiring going to the solenoid from the computer that controls the transmission, or the computer itself.
SOURCE: 1997 transmission Slow Acceleration
not sure if this is the answer yet but i have the same problem with the same codes i work at an auto parts store and a few of the techs that are customers have lead me in the direction of changing the ignition switch, i am doing it today will let you know if it solves the problem
Symptom:
P-0753 TRANS 3-4 SHIFT SOLENOID/TRANS RELAY CIRCUITS
When Monitored and Set Condition:
P-0753 TRANS 3-4 SHIFT SOLENOID/TRANS RELAY CIRCUITS
When Monitored: Continuously with the key on.
Set Condition: This code is set if the voltage detected on the 3-4 Shift Solenoid Control
Circuit at the PCM is different than the expected voltage.
POSSIBLE CAUSES
FUSED B(+) FEED TO THE TRANS CONTROL RELAY OPEN
3-4 SOLENOID WIRING HARNESS INTERMITTENT DEF
3-4 SOLENOID WIRING HARNESS OBSERVABLY DEF
SHIFT SOLENOID CONTROL CIRCUIT OPEN
SHIFT SOLENOID CONTROL CIRCUIT SHORT TO GROUND
SOLENOID AND HARNESS DEF (SOLENOID CONTROL CKT)
TRANSMISSION RELAY OUTPUT CIRCUIT OPEN
TRANSMISSION RELAY OUTPUT CIRCUIT SHORTED TO GND
PCM DEF (3-4 SOLENOID/TRANSMISSION)
PCM DEF (TRANS 3-4 SOL/TRANS RLY CKT)
POWERTRAIN CONTROL MODULE DEFECTIVE
POWERTRAIN CONTROL MODULE DEFECTIVE
POWERTRAIN CONTROL MODULE DEFECTIVE
SOLENOID AND HARNESS DEF (SOLENOID PACK CONN)
TEST COMPLETE
TRANSMISSION CONTROL RELAY DEFECTIVE
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