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post #1 of 17 (permalink) Old 07-01-2009, 05:38 AM Thread Starter
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Need some insight

Took the truck for the first long camping trip of the season...and encountered a few problems. Nothing that prevented me from going anywhere...but more than just a nuisance.

1. I had the chip set for Jody's 40hp tow tune. When going up hill...the ICP would ramp up to about 2900 psi...and the truck would just fall on its face. Shake...shimmy...EGT's climbing. My hpop gauge would hold steady at 3200 psi. If the truck downshifted...it seemed to come out of it. I put the truck in stock...and never had another issue. The ICP would jump to 2800 psi...and if the truck downshifted...it jumped to 3000-3100 psi. No shake, shimmy or anything. Does this sound like my little AB injectors are having issues...like blowing the checkvalves open...or at least floating them?

2. Noticed a shutter when turning under power. Feels like something in the back end...almost like something is rubbing. I looked everything over as best I could...but it just won't go away. The tighter the turn...the stronger the shudder. And only occurred under power. If I was turning while going downhill...didnt happen. Under power going straight...didn't happen. Only under power during a turn. Any ideas?

3. I have switched over to the gold coolant from the green coolant. Blew quite a bit of coolant this trip. The hottest that my water temp guage showed was 223*. I tested the coolant and it tests to 265* without issue. I never had this issue with the green coolant. I am also running Riley's 203* thermostat. Is it time to go back to the 195* OEM thermostat.

Any help or insight you can provide for any or all of the above would be greatly appreciated. It sucked to tow in stock...but that was the only way to keep the truck from stumbling.

Thanks in advance for everything....

~Dave~

2012 F350 KR Dually, stock...bone stock.

early 99 PSD CC F250, DP Tuner F-5, Stealth Stage I, Casserly 160cc singles, Monsterbox Tranny, MBRP cool duals, ITP Regulated fuel system, Cobalts and Performax gauges, and way to much else to remember right now. **traded**

2004 Excursion Limited 6.0L, Dipricol gauges on the A-Pillar, Bilsteins and BFG's on the corners, lost EGR (not looking hard for it either), ARP studs, RCD Black Onyx head gaskets, MBRP 4" exhaust, (labor performed by Dan @ Midwest Transmission) **giggled when traded**

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post #2 of 17 (permalink) Old 07-01-2009, 07:33 AM
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2. do you have a limited slip rear, sounds like clutch chatter. if you have not serviced it recently i would go ahead and do so. when you do service the rear axle you will need to install limited slip additive. i know the Ford stuff works real good ( caution do not get this stuff on you it stinks worse than skunk butts ) any parts store should carry other brands and i have even see fluid labeled to have the modifier in it. this stuff is designed to allow the clutches to slip and not grab going around corners. this problem is almost always more noticeable when towing or with heavy payloads.

3. i am not gonna say this is confirmed but i have heard from a few sources that the gold coolant is not the best heat transfer coolant. i even heard this about the pink/orange brands too. if you are like me i change my coolant way to often to need "extended life" coolants. therefore i use low silicate green. but with gold you dont need SCA's and you do with green. and BTW someone besides me can research this new coolant that ford is using. it is referred to as "dark green" i have seen this on the 09's
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post #3 of 17 (permalink) Old 07-01-2009, 12:35 PM
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Dave,

#3. Check you radiator cap first and foremost. Mine's doing the same thing and the cap has a bad seal.

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post #4 of 17 (permalink) Old 07-01-2009, 01:49 PM
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Quote:
Originally Posted by 4cstr View Post
1. I had the chip set for Jody's 40hp tow tune. When going up hill...the ICP would ramp up to about 2900 psi...and the truck would just fall on its face. Shake...shimmy...EGT's climbing. My hpop gauge would hold steady at 3200 psi. If the truck downshifted...it seemed to come out of it. I put the truck in stock...and never had another issue. The ICP would jump to 2800 psi...and if the truck downshifted...it jumped to 3000-3100 psi. No shake, shimmy or anything. Does this sound like my little AB injectors are having issues...like blowing the checkvalves open...or at least floating them?
Did you replace the IPR when you put the Stealth pump on? A wobbly ICP reading MIGHT be an indicator of an IPR that's on it's way out (but hasn't failed completely)


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2. Noticed a shutter when turning under power. Feels like something in the back end... Any ideas?
What the other guy said--try some friction modifier in the rear pumpkin if you didn't use any at the last service.


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Is it time to go back to the 195* OEM thermostat.
That's what I'm going to do. I never noticed any performance/mileage improvement with the 203 t-stat and since I'm coming due to swap one out anyway at my next major service interval (kept using it through my switch to Fleetrite ELC), I'm going back to the 195* stocker.

2K2 F350 PSD/ZF6, Fluidampr/Melling LPOP, AirDog/ITP RR, DP F5, Tymar/high-flow outlet/MBRP 4", Dynatrac Free-Spin hub conversion
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post #5 of 17 (permalink) Old 07-01-2009, 02:45 PM
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Quote:
Originally Posted by 4cstr View Post
1. I had the chip set for Jody's 40hp tow tune. When going up hill...the ICP would ramp up to about 2900 psi...and the truck would just fall on its face. Shake...shimmy...EGT's climbing. My hpop gauge would hold steady at 3200 psi. If the truck downshifted...it seemed to come out of it. I put the truck in stock...and never had another issue. The ICP would jump to 2800 psi...and if the truck downshifted...it jumped to 3000-3100 psi. No shake, shimmy or anything. Does this sound like my little AB injectors are having issues...like blowing the checkvalves open...or at least floating them?
Sounds like an IPR issue, as JV said. There is probably some debris in it. If it gets bad enough, you will be on the side of the highway waiting for a tow.

3. I have switched over to the gold coolant from the green coolant. Blew quite a bit of coolant this trip. The hottest that my water temp guage showed was 223*. I tested the coolant and it tests to 265* without issue. I never had this issue with the green coolant. I am also running Riley's 203* thermostat. Is it time to go back to the 195* OEM thermostat. Dave, lose the 203 T stat. Never run a hotter T stat with an oil system,



Any help or insight you can provide for any or all of the above would be greatly appreciated. It sucked to tow in stock...but that was the only way to keep the truck from stumbling.

Thanks in advance for everything....
Disregard my IPR comment. If it runs fine in stock, your oil is either too hot, or you have pump problems.
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post #6 of 17 (permalink) Old 07-01-2009, 05:04 PM Thread Starter
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Thanks gents for the comments.

With the IPR issue...I do need to swap out IPR's. I have an erratic idle at times...and think I may have some trash in mine. I have another IPR on the bench..just haven't had the time to put it in.

I have a hard time believing that its either tuning or the pump. In any of my programs...I can stand on the throttle and the pump will jump to 3800psi without issue...and stay there. I can tell when I float the poppets...because the truck just falls on its face...and pressure pegs on my gauge. But...this problem happens in OD just cruising down the road with the camper following behind. As the truck ramps up to climb a hill...I can watch the hpop pressure gauge climb. Once it gets to about 2900psi...the truck begins to flounder...and will do that until pressure comes down. But...if the truck downshifts out of OD...pressure will jump to 3200psi..and the truck snaps to attention and off we go. I noticed in the stock setting that pressure would get to about 2800psi without the truck dropping out of OD...and it would walk a hill fine. If it jumped out of OD...the pressure jumped to 3k to 3.1k psi...and again walked the hill just fine. Thats kinda why I am leaning toward my AB's having problems (they have 151k on them)...but would like to hear from others much smarter than myself before I throw parts at a problem. I do have a full set of AD's that I need to get sent off to be rebuilt with new nozzles...again just haven't found the time to do it.

As for the rear end...I serviced it last year...and they are full of Amsoil. The fluid has between 10k and 15k miles on it...guessing. Will any friction modifier work with Amsoil...or do I need to buy the Amsoil stuff...if they make it?

I am going to order up a new cap...and pull that 203* thermostat out. I have noticed that my fan kicks on more with that in there...and didn't see a huge improvement over stock.

Please keep the ideas flowing fellas.

~Dave~

2012 F350 KR Dually, stock...bone stock.

early 99 PSD CC F250, DP Tuner F-5, Stealth Stage I, Casserly 160cc singles, Monsterbox Tranny, MBRP cool duals, ITP Regulated fuel system, Cobalts and Performax gauges, and way to much else to remember right now. **traded**

2004 Excursion Limited 6.0L, Dipricol gauges on the A-Pillar, Bilsteins and BFG's on the corners, lost EGR (not looking hard for it either), ARP studs, RCD Black Onyx head gaskets, MBRP 4" exhaust, (labor performed by Dan @ Midwest Transmission) **giggled when traded**

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post #7 of 17 (permalink) Old 07-01-2009, 05:50 PM
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any modifier/additive for clutch type limited slips will work, the ford "motorcraft" part number is XL-3, but you might want to check local parts stores or your amsoil dealer for their products also
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post #8 of 17 (permalink) Old 07-01-2009, 07:07 PM
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Dave have you logged engine oil temp? Does it have this problem only when it's up to operating temp, or when it's cold as well?

Also, what is your engine rpm when the problem occurs?
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post #9 of 17 (permalink) Old 07-01-2009, 07:43 PM Thread Starter
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Dave have you logged engine oil temp? Does it have this problem only when it's up to operating temp, or when it's cold as well?

Also, what is your engine rpm when the problem occurs?
Nope...I don't have a way of datalogging stuff like that. Actually...I wonder if my SCT will do it. Have to look.

The engine is at operating temp. There are no hills where I live...so I have to drive a bit on flatland before I encounter my first hill towing...and thats a man-made one (overpass )

I tow with my cruise set at 66 mph...so that puts my rpm's somewhere around 1700...give or take a little bit. If the truck kicks down while climbing a hill...it will jump to 2500-2700 IIRC.

~Dave~

2012 F350 KR Dually, stock...bone stock.

early 99 PSD CC F250, DP Tuner F-5, Stealth Stage I, Casserly 160cc singles, Monsterbox Tranny, MBRP cool duals, ITP Regulated fuel system, Cobalts and Performax gauges, and way to much else to remember right now. **traded**

2004 Excursion Limited 6.0L, Dipricol gauges on the A-Pillar, Bilsteins and BFG's on the corners, lost EGR (not looking hard for it either), ARP studs, RCD Black Onyx head gaskets, MBRP 4" exhaust, (labor performed by Dan @ Midwest Transmission) **giggled when traded**

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post #10 of 17 (permalink) Old 07-01-2009, 07:57 PM
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Nope...I don't have a way of datalogging stuff like that. Actually...I wonder if my SCT will do it. Have to look.
POKE HERE for an easy solution to that problem. I got one for Christmas and love it--I can monitor lots o' inputs and that's a good thing w/o having eleventy-bazillion separate gauges.

2K2 F350 PSD/ZF6, Fluidampr/Melling LPOP, AirDog/ITP RR, DP F5, Tymar/high-flow outlet/MBRP 4", Dynatrac Free-Spin hub conversion
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