Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Transmission Fluid Cooler Flow Test
2010 Ford Transit Connect Van CargoSECTION Transmission Fluid Cooler Flow Test
NOTE:
The selector lever linkage adjustment, transmission fluid level and line pressure must be within specification before carrying out this test. Refer to
AUTOMATIC TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS
for selector lever linkage adjustment procedure. For transmission fluid level checking procedures, Refer to PRELIMINARY INSPECTION . For transaxle line pressure testing, Refer to SPECIAL TESTING PROCEDURES .
- Check the transmission fluid level and fill as necessary.
- Remove the transmission fluid level indicator from the transaxle filler tube and install a funnel in the transaxle filler tube.
- With the vehicle in NEUTRAL, position it on a hoist. Refer to JACKING & LIFTING . Inspect the transmission fluid cooler tubes for damage. Install new transmission fluid cooler tubes as needed.
- Disconnect the transmission fluid cooler return hose from the transmission fluid cooler return tube.
- Plug the transmission fluid cooler return hose to avoid transmission fluid loss.
- Connect one end of a hose to the cooler return tube and route the other end of the hose up to a point where it can be inserted into the funnel at the transaxle filler tube.
- Start the engine and run at idle with the transaxle in NEUTRAL range until the transmission fluid is warm. Temperature is important to the flow rate measurement.
- Once the transmission fluid flow no longer has air bubbles in it, remove the rubber hose from the funnel and insert it into a liter container. As soon as 0.95L (1 qt) is dispensed into the container, install the hose into the funnel. One quart of transmission fluid should flow through the cooling system in approximately 17-21 seconds.
- Once adequate flow is determined, shut off the engine, remove the extension hose and reinstall the transmission fluid cooler tubes with the constant tension clamp.
- If flow is not adequate, stop the engine. Disconnect the hose from the transmission fluid cooler return tube and connect it to the converter-out tube. If flow is now liberal, install a new transmission fluid cooler. Refer to TRANSAXLE/TRANSMISSION COOLING .
- Check the transmission fluid level and adjust as required.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.