99 & up 7.3L Power Stroke Engine and DrivetrainDiscussion of the 99 & up 7.3L Power Stroke diesel engine and drivetrain in the 1999-Up Super Duty trucks and Excursions. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 7.3L Power Stroke engine.
6.0 trans & intercooler installed, now running too darn hot!!!
I replaced the factory 7.3 intercooler and trans cooler in my 02 F-250 with 6.0 parts cause I read about the cooling benefits of both. Well after installing both of these, my truck now is running hotter!!! The trans never stops raising in temp. It used to hang around 150-170 degree's if i can remember and now it easily can hit 200+ and never stops raising. The same with the intercooler, according to my gauges it looks like ive gained 100-200 degree's in egt temp. what is going on with my truck? Is the trans on the way out? It still shifts perfectly fine just hot as #*^^!
Here's some background on my truck: 02 F250 CCSB, Tony wildman 6 position chip, AFE stage 2 intake, 4" TB exhaust, digital gauges. 146k miles on the clock, 2" lift on 20's & 305's. All the simple crap. I use my truck but dont abuse it.
During the winter the original trans cooler cracked and started leaking so if kept adding fluid till I could fix it however i did loose pressure a time or two but only for a few seconds, so I dont know if ive hurt the trans. I did flush out the trans a few months ago with new Mercron V and a new filter. The old fluid didnt look burnt nor was there alot of crap on the bottom of the pan.
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Im the man in White!
99 TJ, 1 tons & heavy built, all White & all torn apart for a 100% rebuild
79 Cherokee Chief, 401 AMC on 35's, old school
02 White CC SB 4x4 Lariat F-250 7.3 Auto; AFE Stage 2, 4" turbo back, BD diesel X-monitor, Tony Wildman 6 position chip.
Last edited by RDG; 07-10-2012 at 07:04 PM.
Reason: Language issue
Make sure your fan clutch is working. If it is not that would be why your truck is running hot. Also make sure your AC condenser is not pluged to. Hope that helps Matt.
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2000 F250 crew cab long box
Banks exhaust, bighead, trancommand, boost gauge trans temp, pyrometer(post turbo)
Dp-Tuner 60& 80econ 60& 80 tow
Strictly diesel overboost annihilator
jobeperformance intake
dieselsite 203 t stat, coolant filter, evans coolant
38r with bank-bighead installed, diesel site non ebv flange international up-pipes coated, diesel site engine boot-kit, non-ebv pedestal
strictly diesel regulated fuel return kit 65psi.
new fuel bowl
CMF+ intake
isspro ev2 pyrometer(pre turbo), fuel pressure, coolant temp, HPOP gauge Matt
I would make sure the installation didn't kink any transmission lines. If you are sure it is flowing good, then I'd flush the Mercon V out and replace it with Dex/Merc. I know the new Mercon V has been reformulated to be backwards compatible, but you wouldn't be the first person to encounter overheating after swapping to Mercon V.
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2003 F-250 XLT Crew Cab 7.3L, Chrome BigTex Grille Guard, Quad pillar - 3 ISSPRO gauges (trans, pyro, boost) and DP-Tuner F6; Roush fuel pressure / temperature / oil pressure gauges, Ford Severe Duty AIS, 31 row 6.0 transmission cooler, ScanGauge II, Marinco mod, Walker BTM
"IF YOU CAN'T FIX IT WITH A HAMMER, YOU’VE GOT AN ELECTRICAL PROBLEM"
Like the previous post. Check to make sure you have good flow. What fittings did you use on the cooler? Straight thru or right angles? Right angled fittings could cause flow issues. Also need to check the bypass valve. If that is not working correctly you need to get that replaced ASAP! When I did my cooler install I also put in an external filter with a flow gauge. Comes in handy and lets you know when to change the filter.
Before the cooler switch, I used to hit 200+ degrees while towing on a regular basis. After the switch the highest I've seen is 190.
I will say that when you installed your cooler, you may have pinched the 1/2" hose at the bottom of the cooler. The passenger side is pretty finicky and can be pinched easily.
Have you done a flow test at the aft line on the transmission to see if you are getting good flow?
Also was it a new or used cooler?
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Ken
2002 F-350 CCLB 4X4, HD4R100 , Riffraff FRx, Riffraff CAC Boots & PRI's, Bellowed Up-Pipes, 4" Diamond Eye exhaust, Powerslot rotors, ATS Ported Compressor Housing, DP Tuner-F6, Autoenginuity, EEC-V Breakout Box, KCM S.S. HPX Line, S&B Filters intake, Quad Autometer gauge pod, Inovations canopy, Banks Big Head wastegate actuator, 6.0L Trans Cooler, Spin-on Transmission filter with custom bracket, Zoo-dad, Dieselsite Coolant Filter, Cobra 29LTD/NW CB, DVD and always looking to do more....
Like the previous post. Check to make sure you have good flow. What fittings did you use on the cooler? Straight thru or right angles? Right angled fittings could cause flow issues. Also need to check the bypass valve. If that is not working correctly you need to get that replaced ASAP! When I did my cooler install I also put in an external filter with a flow gauge. Comes in handy and lets you know when to change the filter.
Before the cooler switch, I used to hit 200+ degrees while towing on a regular basis. After the switch the highest I've seen is 190.
I took off my bumper and noting looked kinked or wrong with the lines. Ive done some reading up on the bypass valve but cannot find it. I dont see any banjo bolts on my passenger side transission, just flared nuts on the trans lines going into the transmission, am I not looking in the right area?
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Im the man in White!
99 TJ, 1 tons & heavy built, all White & all torn apart for a 100% rebuild
79 Cherokee Chief, 401 AMC on 35's, old school
02 White CC SB 4x4 Lariat F-250 7.3 Auto; AFE Stage 2, 4" turbo back, BD diesel X-monitor, Tony Wildman 6 position chip.
thanks, I figured it out after looking at it more. I just cleaned the bypass valve and tube, maybe there will be a difference, if not Im buying a eliminator kit for the bypass.
__________________
Im the man in White!
99 TJ, 1 tons & heavy built, all White & all torn apart for a 100% rebuild
79 Cherokee Chief, 401 AMC on 35's, old school
02 White CC SB 4x4 Lariat F-250 7.3 Auto; AFE Stage 2, 4" turbo back, BD diesel X-monitor, Tony Wildman 6 position chip.
If you eliminate the bypass and then get a restriction in the cooler circuit your first clue that something is wrong would be when the trans fails. If you have a bypass and get a restriction your first clue is that the trans runs hot. Something to think about...
__________________ Mark Former Automatic Transmission Engineer 1988-2007
“The good thing about science is that it's true whether or not you believe in it.” ― Neil deGrasse Tyson
Eliminating the bypass is not a good idea. It's there for reason and is cheap insurance. If you eliminate it and develop a restriction the tranny will not be able to pump any fluid. Your tranny will destroy itself before you know it.
Just bought the bypass repair kit, hopefully this works and everything is better but Im already assuming that the torque converter is failing. I took off my front bumper and all my lines look good, no kinks or sharp bends. I took off a return line and had plenty of flow.
At that point its either an upgraded torque converter is needed or its time to ship the tranny out to Brians truck shop .
__________________
Im the man in White!
99 TJ, 1 tons & heavy built, all White & all torn apart for a 100% rebuild
79 Cherokee Chief, 401 AMC on 35's, old school
02 White CC SB 4x4 Lariat F-250 7.3 Auto; AFE Stage 2, 4" turbo back, BD diesel X-monitor, Tony Wildman 6 position chip.
What Mark said. "Plenty of flow" is defined as a minimum of one quart in 15 seconds, or one GPM. Note: that's the minimum. With your setup I would think you should be getting closer to 1.5 quarts in 15 seconds (= 1.5 GPM).
Measure the actual flow, and if it's less than one quart in 15 seconds, then you have too much restriction somewhere in your lines or coolers.
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My Sierra Blanca in the sig pic was a great pickup for 11.5 years. I sold it a coupla years ago. I drove a hand-me-down 2003 F-150 SuperCrew 4.6L 2V for a while, but it was unacceptable for towing more than a rowboat. Replacement is a 2012 F-150 EcoBoost SuperCrew Lariat that tows my 5,000-pound TT like a dream.
What Mark said. "Plenty of flow" is defined as a minimum of one quart in 15 seconds, or one GPM. Note: that's the minimum. With your setup I would think you should be getting closer to 1.5 quarts in 15 seconds (= 1.5 GPM).
Measure the actual flow, and if it's less than one quart in 15 seconds, then you have too much restriction somewhere in your lines or coolers.
Best estimate I can give as it looked about 1.5q in 15 seconds. When I rebuild the bypass valve Ill pop off the lines and blow them out just to make sure there are no blockages.
__________________
Im the man in White!
99 TJ, 1 tons & heavy built, all White & all torn apart for a 100% rebuild
79 Cherokee Chief, 401 AMC on 35's, old school
02 White CC SB 4x4 Lariat F-250 7.3 Auto; AFE Stage 2, 4" turbo back, BD diesel X-monitor, Tony Wildman 6 position chip.
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