04 6.0 POWERSTROKE 3RD GEAR PLAYER MANUAL

If the control module senses a speed reference greater than 8mph during the shift into reverse, it has the ability to prevent the shift from happening. Electrically controlled transmissions generally have a built-in safety program that prevents the transmission parts from breaking based on a rolling speed shift reference during the reverse engagement. Splitting the circuits electrically is a very basic step in the 'No Reverse' shift concern diagnosis. Step 2: Split the Circuits 'Electrically' Is this tech helpful? Provide us with your feedback at the end of the article.

Remember, splitting the circuits means separating the hydraulic, electrical and/or mechanical issues which can create the problem.

04 6.0 POWERSTROKE 3RD GEAR PLAYER MANUAL

The no engine braking in manual 1st gear is a great clue that may lead us to the band, but there are still other factors to look at. These will be separated during the mechanical test to know where the problem area is. If there was no engine braking in manual low, there may be a mechanical issue with the Low/Reverse Band (we will confirm this in the last part of these three test areas) or a valve body issue such as a missing or leaking checkball. Engine braking in manual 1st: we know the Low/Reverse Band is capable of holding.3rd and 4th gear not present: there may be an issue with a checkball leaking or missing in the valve body, and/or something with the seal rings and/or direct clutch drum fault.3rd and 4th gear are present: we know the direct clutch is capable of working and is good.This will prevent oil ending up inside the car if there happens to be a leak from the gauge or hose).ĭepending on the test results, we know the following: (Remember, keep the pressure gauge on the outside of the vehicle if it is a mechanical gauge. IMPORTANT: Make sure that the pressure gauge is secure for the road test and easily viewed. To test the pressures for 3rd gear, 4th gear and manual 1st gear, we will have to go on a road test while monitoring the pressure gauge. Verify that both the low side and the high side of line pressure at each of the shifts are within the pressure test chart specification. Knowing this, we want to test the line pressure while in Reverse, 3rd gear, 4th gear and in manual 1st. Low/Reverse Band (also used for engine braking in manual 1st gear).Direct Clutch ( also used in 3rd and 4th gear).In the case of 'No Reverse,' the players inside the transmission are: Also, use the clutch and band application chart to see if the component of concern is used in a different gear range, and make the pressure test in that gear range as well. This means that the pressure test must be done in that specific gear. When dealing with slipping, chatter and/or individual shift failures, it is very important to see if the line pressure that is directly associated with that one shift is out of specification. Step 1: Split the Circuits 'Hydraulically' Make sure you have the following on hand: a line pressure test spec sheet with test port locations, and a clutch and band chart to help eliminate other areas which may be associated with the problem shift. Let's follow the flow of diagnosis in this one together. Splitting the circuits means separating and analyzing the hydraulic, electrical and mechanical issues which could create the problem. A reliable and orderly diagnostic approach is splitting the circuits. A real-life situation reminded me how we all fall into this trap and need to remember that diagnostic time typically saves money versus guesswork, which can be very expensive when it does not work.ĭiagnosing a shift concern can be easy, as long as you understand some basic techniques to help get to the root of the problem. In our rush, we often ignore the diagnostic basics which would have led us to the root of the problem. When time demands become overwhelming, such as in this scenario, it is very easy to get sidetracked.

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04 6.0 powerstroke 3rd gear player