E99 Questions for newbie - Ford Powerstroke Diesel Forum

 
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post #1 of 10 Old 10-09-2011, 09:23 PM Thread Starter
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E99 Questions for newbie

Hey guys new to this forum and new to compression ignition also, but I got a couple questions maybe ya'll can help out with. First when hold throttle lightly, like to maintain speed on flat ground truck is missing and herky jerky. Read on here about tps sensor being bad, so my question is it also does it with the cruise control engaged, is that still the tps sensor?
Next question, if i get on the throttle hard and then let off quickly the engine kinda kakles or misses before it returns to idle, also on does this when under load or in gear, wont do it in neutral. So is this normal?
By the way I have an E99 F350 single wheel RWD with 130k on the odometer, all stock. the truck is in perfect condition other than a couple of issues.
Thanks for any help.
Russ
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post #2 of 10 Old 10-09-2011, 09:37 PM
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I'd start by getting the injectors tested.


-'99 F250 7.3L PSD 4x4 (SCLB, 6-speed)
-'14 F150 4x4 5.0 CCSB
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post #3 of 10 Old 10-09-2011, 10:15 PM Thread Starter
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Just out of curiosity what do you think is wrong or going on with the injectors?


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post #4 of 10 Old 10-11-2011, 02:11 PM
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Subscribed! Mine does this only on occasion. Haven't found any answers yet.

Early 99 F250, Tuned by Gearhead, Diamond Eye 5", DIY intake, GS EGT/Trans/Boost, FRX, HPX, CCV, Schaeffers 9000, ELF7405, Stancor

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post #5 of 10 Old 11-27-2011, 06:26 PM
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I had similar symptoms. I had my mechanic perform a cylinder contribution test. He found that #1 cylinder was weak. At that point its either the injector or the cylinder (mechanical issue). New injector made it purr
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post #6 of 10 Old 11-28-2011, 01:30 AM
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post #7 of 10 Old 12-05-2011, 06:07 PM
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the ford house is saying the #6 injector is weak... and it wants to vibrate or shudder at 45 mph or so under load...if i let off the throttle or speed up to like 48 it goes away, has a slight miss once it first starts (why i got it tested in the first place) but once warm it runs like it has for the last 50k, fresh oil, bone stock e99 except the latter style intake and 293k on the odometer... i changed the valve cover harnesses 10k ago should i just replace the bad injector, or cough up the money for all 8? I DON'T WANT to screw with an engine that's lasted this long, but in my experience once something like an injector starts to fail...the others are soon to follow... wheres the best place to get quality stock injectors w/o paying an arm and a leg for them...

E99 F250 Lariat, 12-2-97 Build Date (#299 off the line), DIY 6637, 4" Turbo-Back straight pipe w/5 1/2" tip, 17* HPOP, 120v IDM, AD Injectors, Late 99 van Turbo with billowed up-pipes, 03 interior upgrade, 08 Tailgate and taillights, Leveled on 315/75/16 Dynapro M/T's

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post #8 of 10 Old 12-07-2011, 07:53 AM
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I replaced #1 30k miles ago. So far theres been no other failures. Im just too cheap to replace $700 worth of good parts.

I got an ebay reman
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post #9 of 10 Old 12-07-2011, 08:58 AM
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I'd be severely limited by budget, but would get all 8 if I could do so. No surprises when all 8 are new. Inj. nozzles can wear out over time and mess up the spray pattern. Thats not to mention wear on the solenoids and plungers too. Knock on wood, my originals are still strong @ 320,xxx miles.


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-'14 F150 4x4 5.0 CCSB
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post #10 of 10 Old 12-07-2011, 06:49 PM
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i don't know whats worse, having to drop a ton to replace "good" parts, or to keep crawling under the hood to replace them one at a time... i guess i'll do some figureing and maybe change the drivers side first and once i start to loose one on the pax side replace all of them... thanks for the input

E99 F250 Lariat, 12-2-97 Build Date (#299 off the line), DIY 6637, 4" Turbo-Back straight pipe w/5 1/2" tip, 17* HPOP, 120v IDM, AD Injectors, Late 99 van Turbo with billowed up-pipes, 03 interior upgrade, 08 Tailgate and taillights, Leveled on 315/75/16 Dynapro M/T's

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