Towing Issues - Nissan Titan Forum
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#1 Old 11-01-2011, 09:33 PM
JCM
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Towing Issues

I have a question that possibly someone could help me with. I'm new to the forum so bear with me. I am towing a small 3900 pound travel trailer with my new 2011 Titan Pro 4x. (The truck is equipped with tow package, tow mode, etc.) The truck performs fine until I hit 4th gear, then it bogs down and loses RPMs immediately and I end up back in 3rd gear. The truck flies in gears one through three, but it really hits a wall in 4th. When it shifts to 4th it drops about 1500 RPMs. I have two questions. 1) Is anyone having this no power in 4th gear problem with a light load like this? And (2) Will it hurt the engine to run at 60+ miles an hour in 3rd gear at 3500 rpms for a long period of time? Any help would be appreciated.
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#2 Old 11-01-2011, 11:52 PM
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Have your fuel pump pressure checked. It should be near 51 PSI. There have been problems with the pumps, especially if you often let fuel levels get very low.
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#3 Old 11-02-2011, 12:11 AM
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SCR38,

Thanks for the idea. I'm going to have that checked asap.
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#4 Old 11-02-2011, 10:45 AM
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The only time my truck has ever done anything like that is when i accidentally ran it in OD. Once I put it back into 4th I have no problems with it. I have noticed it seems to shift too soon, in my opinion, into 4th at lower speeds which can make it seem like it is bogging down a little. I know it shifts through the gears a lot quicker than my 04 did.

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#5 Old 11-02-2011, 04:53 PM
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Ok...The 2010+ Titans got new torque converter mapping and it is extremely intrusive. Especially when towing or accelerating onto the interstate. I have a center shifter so what I do is hold it in 4th (torque converter still locks) until I hit 60mph were I shift into D under normal driving conditions. I towed 4500lbs in 4th, in a non BT and she did fine.

What happens when it bogs down is...at approx 40-45mph under "normal" acceleration, the trans shifts into 4th, then locks the torque converter, almost immediately unlocks and shifts to 5th, then locks out in OD again. Idk why nissan designed it like this but they are the engineers so I dont question. I do know the purpose is to increase gas mileage, reduce transmission temps, and increase energy usage (i.e. reduce slippage). Just for the record, your truck is operating as designed I promise. Dont leave it in 3rd at 60mph...eventually the trans will overheat. Hold your trans in 4th once you get to cruising speed or you see the trans getting hot. Allow the torque converter to lock in 4th...and at 60 mph it will hold you rpms at around 1800-1900rpms (2.94), and 2000-2100rpm, i think, (3.36) which is a perfect rpm for cruising with a load. Keeps it in the power band better. To accelerate, slowly depress the pedal and it will gain speed...just be patient. If you want to unlock, double pump the gas or increase pedal input % to at least 50%. I know the truck tends to shimmy a little when trying to accelerate but thats just do to engine speed. Its a good towing truck you just have to learn how she likes it.
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#6 Old 11-02-2011, 07:51 PM
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That's a pretty weird explanation. I'm not saying you're wrong, I just think it's weird.

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#7 Old 11-02-2011, 09:25 PM
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Get some headers and you'll be fine.

06 KC 4x4 w/ offroad package, Superchips Cortex, Nismo intake and headers, 07 exhaust w/ Magnaflow 18" muffler swap
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#8 Old 11-02-2011, 10:31 PM
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Quote:
Originally Posted by HRTKD View Post
That's a pretty weird explanation. I'm not saying you're wrong, I just think it's weird.
If you have not drove, particularly towed with a 2010+...then it would be weird. Ive owned an '08 and '10 and there is a HUGE difference in the transmission/TC mapping. First 6 months I fought the dealer cause I thought there was something wrong. There has been a couple threads on here or/and TT having to do with this subject. If you watch listen and feel, you can feel and see (tach) what I was saying.
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#9 Old 11-02-2011, 11:18 PM
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I am going with the transmission is locking the torque converter in 4th like it's supposed to do. I bet when you ease into the throttle while in 4th the rpms don't go up do they?this means the torque converter is locked in. If you ease into the throttle in 3rd gear I bet the rpms jump up immediately the drop back down as you release some pressure off of the throttle. This means the torque converter is not locked. Its kind of like having a stall converter in the tranny instead of the standard oem TQ.
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#10 Old 11-03-2011, 10:45 AM
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Quote:
Originally Posted by VK56DEHAN View Post
If you have not drove, particularly towed with a 2010+...then it would be weird. Ive owned an '08 and '10 and there is a HUGE difference in the transmission/TC mapping. First 6 months I fought the dealer cause I thought there was something wrong. There has been a couple threads on here or/and TT having to do with this subject. If you watch listen and feel, you can feel and see (tach) what I was saying.
I completely agree with you on that. When i went from my 04 to my 2010 I thought there was something wrong with it. Not just towing but everyday driving. It took awhile to get used to it and I still sometimes wonder if something is wrong.

New ride: 2010 Crew Cab Pro-4x; Volant Powercore intake; Magnaflow muffler swap
Coming Soon PRg leveling kit
Old Ride:2004 King Cab LE with Off-Road and Big Tow
PRG Leveling Kit, JBA Cat-Back Exhaust w/ SLP Loudmouth muffler,New Volant Powercore Intake,2 degree advance,Axle Vent Mod, Stillen Differential Cover w/M1 75w-140
Other rides: 2008 Armada SE; All stock and will probably stay that way since it is the wifes. We'll see.
2004 Dodge 1500; Wifes first truck so we kust kept it. All stock.
1972 Ford F100 Ranger XLT; 360 with cam, headers, edelbrock 600, Edelbrock Al. Intake, straight pipe dumped below cab. Its loud. (thinking about possioble VK56 swap in the future when done with school)
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