![]() ![]() This will cause an internal leak that will result in a drop in the transmissions line pressure. Either the bore in which the intermediate servo pin rides in is worn out, or the spring on the intermediate servo piston is too strong.Ħ) No reverse: If the transmission has no reverse you most likely have a bad SSA solenoid.ħ) Delay going into reverse of a forward gear: Has the valve body been removed recently for any reason? If so, there is a possibility you did not align it correctly with the alignment pins. The shop manual will show you the correct position.ģ) No 3rd or 4th gear: If the 2 – 3 shift valve spring is missing, or someone has installed it wrong, you will lose 3rd and 4th gear.Ĥ) No up shifting: This problem can be caused by the solenoid regulator valve being out of position.ĥ) Slips on the 2 – 3 shift: There are two different issues that can cause this problem. In either case, the solenoid will need to be replaced with a new one.Ģ) No 2nd or 4th gear: This is often caused by the solenoid regulator valve being out of position. A low reading means that there is most likely a short in the internal wiring and no reading means the wire is broken. The reading on a good functioning solenoid should be around 20 to 30 ohms. All of the solenoids can be easily checked with an ohm meter. The two most likely to fail are the transmission pressure control solenoid and the torque converter solenoid. To identify your transmission, click HERE Most Common Problems:ġ) Solenoid failure: The 4R55 is an electronic transmission and as such, it contains a few solenoids. The 4R44E continued on through the end of the 1990’s before being replaced by the 5R44E (5R55E’s relative). The 4R55E was short-lived however as it was replaced in all instances where it was used with the newer 5R55E during the 1997 model year. The 4R55E was used in heavier-duty applications, specifically with the 4.0 L Cologne V6 used in vehicles like the said Ford Ranger or Ford Explorer. The 4R44E was used in lighter-duty applications, namely with 4-cylinder or 3.0 L V6 models of the Ford Ranger pickup. The transmissions are fundamentally similar in design, varying only in the durability of key components based on the type of duty they were to be used for. The two major versions of this new transmission were the 4R44E and 4R55E. lbs.įor the 1995 model year, the A4LD was upgraded to feature full electronic controls, resulting in a new transmission family.4R55E is the same but heavier duty and rated for 550 ft 4R44E / 4R55E – The name 4R44E means 4 forward gears, rear-drive platform (or 4WD, with a different tailshaft housing), rated for 440 ft/lb torque (after torque converter multiplication) and electronic shifting. ![]()
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