What causes a retention time shift in GC?
GC Troubleshooting Series Part Six: Retention Time Shifts Possible Cause: Changes in Column Dimensions vs. Previous Column If your issue occurs after changing a column, it is probably due to changes in column length. The old column may have been trimmed over time to a significantly shorter length.
Why does my transmission shift hard from 1st to 2nd gear?
The fluid gets dirty over time and when it does, it causes plenty of troubles. Hard shifting is one of them. If the color is dark brown or burnt, changing it is likely to solve this issue. Dirty transmission fluid. (Photo Source: procarreviews)
Why does my Jeep Grand Cherokee not shift gears?
For example, you may find that you’re only able to drive the car in the automatic transmission’s third gear, only being able to select the other two gears when you shift the transmission manually. The most common cause of transmission problems is the easiest to fix: check the fluid level in the transmission and restore it to the proper levels.
Why does my transmission shift hard after replacing the fuel filter?
Even experienced mechanics struggle to find out the exact reasons for this problem. The shifting hard problem can persist even after replacing the fuel filter and pressure control solenoids. Sometimes, it happens when the engine is cold and you try to kick it off right away without warming up first.
When did Jeep start using The 42RE transmission?
Jeep Grand Cherokee started using the 42RE transmission in 1993 1/2 models with the 4.0L engine. The “4” stands for 4-speed, “2” is for torque capacity, “R” is for rear-wheel drive, and “E” is for electronically controlled.
How is the upshift and downshift of a transmission controlled?
The 3-4 upshift and 4-3 downshifts are controlled by a solenoid. Although the shifts are controlled by shift valves for the lower gears, the higher gear is electronically controlled because the governor pressure acting against it is controlled by the transmission control module (TCM).
For example, you may find that you’re only able to drive the car in the automatic transmission’s third gear, only being able to select the other two gears when you shift the transmission manually. The most common cause of transmission problems is the easiest to fix: check the fluid level in the transmission and restore it to the proper levels.
What’s the difference between a 42RE and a 46RE?
I pulled the block from my 42re- they are identical between 42re and 46re. did the swap- but could’ve cleaned out the screen on the sensor it was clogged solid. either way cleaning or swap will have the same effect. IT SHIFTS AGAIN!!!