2000 7.3 surges at about 45 to 50 mph - Ford Powerstroke Diesel Forum
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post #1 of 25 Old 09-04-2008, 08:01 AM Thread Starter
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2000 7.3 surges at about 45 to 50 mph

I have a 2000 7.3 with stage II single shot injectors, custom ts chip from beans diesel, High tech turbo recentley installed that surges at a steady rpm. I have a buddy with the same issue but yet to figure it out, it done this before the injectors too, I thought that the new injectors might possibly fix the problem but it didn't. Has plenty of power just surges. Anyone heard of this before? Any help would be appreciated, thanks.

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post #2 of 25 Old 09-04-2008, 08:04 AM
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Stage II's = NEW Turbo I have the Turbonetics BB with Stage II Single Shot and they work great together the Garrett GT38R is another good option

My stocker surged without the injectors to the Wicked Wheel helps that but with stage II's you really need a aftermarket turbo

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post #3 of 25 Old 09-04-2008, 08:17 AM Thread Starter
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I do have an aftermarket turbo, an htps or something like that, I was also was wondering if it had something to do with the high pressure oil, so I put one of those cross over lines on and that didn't fix it.
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post #4 of 25 Old 09-04-2008, 09:39 AM
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Originally Posted by ranmiller66 View Post
I do have an aftermarket turbo, an htps or something like that, I was also was wondering if it had something to do with the high pressure oil, so I put one of those cross over lines on and that didn't fix it.
Sorry wasn't paying attention the HT is similiar to a D-66 and a few others if you are saying that the Turbo is surging like the stockers do it probably can't handle the amount of fuel your using IMHO maybe somebody else has another reason why

Now if your saying the truck is surging (the motor) it could be a HPOP problem

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post #5 of 25 Old 09-04-2008, 10:34 AM Thread Starter
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It's not the turbo, when you drive down the road the rpms just go up and down like your in and out of the pedal.
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post #6 of 25 Old 09-04-2008, 10:45 AM
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Your HPOP may not be able to handle the stage II injectors. There for you may have to upgrade to a bigger or dual HPOP system.

Another thing is have you upgraded the fuel supply pump. Something like a Fass or Air dogg system may help you out.

Another thing to try is have the ts reburned to the specs of your truck. As in maybe custom tuning I know you say you have a custom TS chip. But may need to have it reburned for the injectors if you have not done that.


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post #7 of 25 Old 09-04-2008, 10:52 AM
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could be the injection control pressure sensor my 01 did that when that sensor was out and it was completly stock but i changed that and it went away


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post #8 of 25 Old 09-04-2008, 10:53 AM
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You are going to need to monitor the data stream. If it is surging that badly and it was an icp problem, it would most likely trip the CEL. Does it surge at all speeds? Does it surge at WOT?

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post #9 of 25 Old 09-04-2008, 10:57 AM
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also.. that HTT is not that great of a Turbo to begin with... its great for a stock replacement but once you start adding bigger sticks, fuel ect you have reached its limit....

upgrading to a Garret or TN would be a good option...

-Raul
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post #10 of 25 Old 09-04-2008, 11:00 AM
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Quote:
Originally Posted by Dirk View Post
You are going to need to monitor the data stream. If it is surging that badly and it was an icp problem, it would most likely trip the CEL. Does it surge at all speeds? Does it surge at WOT?
well when mine did it. it was mostly when it was cold out and i would be at slower speeds and would be at a smooth constant pedal and it would just jump up i would let off and it would go away


2003 7.3L
Crew Cab Short box
Lariat
Cowl (functional)hood
315/75-16 wild coutry A/T's
Hypertech power programmer 3
T.S 6pos
stock,high idle,50,75,100,140
AFE stage 1
Foil delete
MBRP Cool Duals 6" tips
Sirius sat radio
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