Overboost code with Stage 1s - Ford Powerstroke Diesel Forum
 
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post #1 of 9 Old 06-10-2012, 06:35 PM Thread Starter
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Overboost code with Stage 1s

Anyone getting boost sensor high codes? I believe it was a PO238. Only happens in 140hp tune. As far as I know the truck only has stage 1 injectors, no turbo housings or anything. Usually can get the CEL to come on near or above 35psi of boost.

1997 Ford F-350 4x4 SRW regular cab manual trans.
-Rosewood 160cc, 17*HPOP, EPBV delete, 4.10s, 315/75r16

1996 Ford F-350 4x4 SRW CCLB manual trans. CALI spec
-ATS intercooler, WW2 w/ 1.0 housing/EPBV delete, Comp 910s, SD Efuel, 3.55s, 315/75r16

2002 Ranger FX4 with manual transfer case and Alcoa's
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post #2 of 9 Old 06-10-2012, 06:38 PM
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Umm, well duh. 35PSI will throw an overboost unless you have a boost fooler.



2000 F-350 Lariat Super Duty, Dually, CCLB, 7.3L
4R100, 2wd
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post #3 of 9 Old 06-10-2012, 06:39 PM Thread Starter
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Hey thanks, I didn't know this.

1997 Ford F-350 4x4 SRW regular cab manual trans.
-Rosewood 160cc, 17*HPOP, EPBV delete, 4.10s, 315/75r16

1996 Ford F-350 4x4 SRW CCLB manual trans. CALI spec
-ATS intercooler, WW2 w/ 1.0 housing/EPBV delete, Comp 910s, SD Efuel, 3.55s, 315/75r16

2002 Ranger FX4 with manual transfer case and Alcoa's
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post #4 of 9 Old 06-10-2012, 06:40 PM
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I'm surprised your tuner didn't mention this to you when you had him tune for the S1s.



2000 F-350 Lariat Super Duty, Dually, CCLB, 7.3L
4R100, 2wd
330,000 + miles
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post #5 of 9 Old 06-11-2012, 08:29 AM Thread Starter
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I talked to PHP they didn't mention it, I see they have it listed on the website, however when ordering I didn't see a spot to "opt" out of a certain DTC.

Not a big deal, I just wasn't aware the OBS trucks did this.

1997 Ford F-350 4x4 SRW regular cab manual trans.
-Rosewood 160cc, 17*HPOP, EPBV delete, 4.10s, 315/75r16

1996 Ford F-350 4x4 SRW CCLB manual trans. CALI spec
-ATS intercooler, WW2 w/ 1.0 housing/EPBV delete, Comp 910s, SD Efuel, 3.55s, 315/75r16

2002 Ranger FX4 with manual transfer case and Alcoa's
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post #6 of 9 Old 06-11-2012, 09:30 AM
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I didn't think the OBS had over boost code.... Perhaps I'm wrong?

And if so then does the truck start to de-fuel on the top end when the code hits?

-Tom

2003 F350 CCSB. 307K. Everything but the studs.

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post #7 of 9 Old 06-11-2012, 10:38 AM Thread Starter
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You can tell it looses power, It's only in the biggest tune which I rarely use, so it's not a huge deal.

1997 Ford F-350 4x4 SRW regular cab manual trans.
-Rosewood 160cc, 17*HPOP, EPBV delete, 4.10s, 315/75r16

1996 Ford F-350 4x4 SRW CCLB manual trans. CALI spec
-ATS intercooler, WW2 w/ 1.0 housing/EPBV delete, Comp 910s, SD Efuel, 3.55s, 315/75r16

2002 Ranger FX4 with manual transfer case and Alcoa's
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post #8 of 9 Old 06-11-2012, 12:08 PM
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It doesn't de-fuel, it slows the input from the IPR (IIRC), also takes at least two consecutive overboosts to set a code

Jack
97 F250 Xlt, built E4od, D60 swap, Baby swamps, tunes by Dp
1.0 housing w/ wwII, 203* t-stat, diy 6637, 4" exhaust
Diy intercooled, 6.0 fan, Diy 140v Idm, Isspro Ev gauges
On board air, E-fuel, 6" lift on 35's
322000 miles
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post #9 of 9 Old 06-11-2012, 02:33 PM
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Quote:
Originally Posted by rolsmojave3 View Post
I talked to PHP they didn't mention it, I see they have it listed on the website, however when ordering I didn't see a spot to "opt" out of a certain DTC.

Not a big deal, I just wasn't aware the OBS trucks did this.
Grab a cheap air pressure regulator and gauge installed into the "gauge" port. Plug the "out" port. Hook it to a air pressure source with a known pressure higher then 50PSI. Set the cheap regulator to 23PSI. Install on the MAF feed hose that is between passenger intake manifold and MAF port on the firewall with barbed fittings and hose clamps. Now your PCM will never see the full boost and continue to fuel as normal. Start truck and hold on!

Matt
'97
-Bean's: 160/100 (FF Injectors), 2/ 6-POS chips (TW & Beans tunes), Overboost controller, E-Fuel
-BANKs: downpipe, full exhaust, gauges, intercooler
-Irate: T-4 kit, IC pipes, 3" Irate Plenums, BASB Turbo
-Stage II trans.
-Mag-Hytec trans. and pumpkin covers
-6637, CCV, IDM, 6.0 Fan, 49-Federal PCM swap, MAP line Mod
-370 Amp alt., 40k trans cooler, ADRENALINE PUMP
-twin on-board air w/ 10 gal. tank

-Oh, and a 2015 F350 6.7L DRW 4x4

Re-pinning '97 Cali PCM to Federal
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