icp number very low on looney wild!!!!!! - Ford Powerstroke Diesel Forum
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post #1 of 19 Old 08-12-2012, 12:11 PM Thread Starter
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icp number very low on looney wild!!!!!!

i have been chasing a surging/sputtering problem for a few weeks. fuel pres sure around 50 psi at wot..pulled icp and checked.connection looked very clean.i am down 3-5 mpg, and about half the power! icp number maxes out at app. 1550 psi.. at wot. thats when it starts sputtering, and farting thru intake.considerably lot more smoke present.ficm voltage hovering around 47-49 volts.took looney wild out.and i returned truck back to stock earlier. icp numbers max out at 3,900 now! i still feel a very slight sputter at wot. only because i know how the truck acted on looney wild.i have had 3 injectors changed at 90,000 and 110,000 miles....at 155,000 now..i am on list at warrens for 8 new 155's.. i just dont undestand the low icp numbers on loone.the truck was running like a scalded ape for 6 months,with no complaints..todd

2007 F-250 King Ranch SD SWB 4x4....
155,000 miles
Edge CS..turbo timer..EGT..FP
Looney Wild tune dd
EGR Delete
New Ford updated oil cooler
New Ford HG's
ARP's
New ICP
Leveling kit
35" Mt's
4" MBRP Alum. tb exhaust
PMM coolant filter
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post #2 of 19 Old 08-12-2012, 02:24 PM
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Your FICM looks to be good. As in your own testing shows it may be the tune. How are you reading your HPOP? Some tunes/tuners trick the systemto think pressures are lower than they are. Back in the stone ages we had to install resistors and caps to trick the PCMs.
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post #3 of 19 Old 08-12-2012, 02:28 PM Thread Starter
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Icp psi on cs monitor..tune ran great for 6 months!

2007 F-250 King Ranch SD SWB 4x4....
155,000 miles
Edge CS..turbo timer..EGT..FP
Looney Wild tune dd
EGR Delete
New Ford updated oil cooler
New Ford HG's
ARP's
New ICP
Leveling kit
35" Mt's
4" MBRP Alum. tb exhaust
PMM coolant filter
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post #4 of 19 Old 08-12-2012, 06:05 PM
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I see you have EGR delete, so I won't say to look at the EGR valve. Your turbo vanes may be sticking. If on stock you see 3900 PSI on your HPOP system, that would tell me that system is good also. A surge or hunting is normally indicative of a bad ICP or harness (more so on the 03's). I would look at the tune again if everything else is OK. On looking at your signature, why was a new ICP put in?
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post #5 of 19 Old 08-12-2012, 06:14 PM Thread Starter
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I didn't realize I put Icp..the ipr was changed when head gaskets were done..had some trash on the screen. Easy to change with turbo off..I have to figure out the problem soon!! STOCK SUCKS!!!!!

2007 F-250 King Ranch SD SWB 4x4....
155,000 miles
Edge CS..turbo timer..EGT..FP
Looney Wild tune dd
EGR Delete
New Ford updated oil cooler
New Ford HG's
ARP's
New ICP
Leveling kit
35" Mt's
4" MBRP Alum. tb exhaust
PMM coolant filter
cajunpsd is offline  
post #6 of 19 Old 08-12-2012, 06:21 PM
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little off topic, but how do you check icp pressure with your insight? mine just reads icp voltage...

'04 F-250 Lariat CCSB FX4

Elite H-11 headstuds, BPD oil cooler, BPD bypass oil filter, BPD Waterpump, BPD 58 volt FICM,mWarren 175/30's, KC Stage 3 68mm turbo, Andy Warren Comp plus tranny, PI Stallion, Sinister EGR delete, MBRP 4" exhaust, Dieselsite coolant filter, ELC, Edge Insight CST, SCT SRL++
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post #7 of 19 Old 08-12-2012, 06:21 PM
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Your HPOP is fine and what you are seeing is pretty normal for a tuned truck. It is a trick used to get the IPR to go full bore.

I recently saw a post from someone with similar issues that nobody could resolve including several attempts by his dealer. Turned out to be a bad wire in his MAF connector. Fixed that and all his problems went away. Something you might want to check if you're stumped.
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post #8 of 19 Old 08-12-2012, 06:27 PM Thread Starter
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I am relieved that the hpop is ok..I will try to find thread about map wire problem.is there any way to test map sensor? Or monitor readings?

2007 F-250 King Ranch SD SWB 4x4....
155,000 miles
Edge CS..turbo timer..EGT..FP
Looney Wild tune dd
EGR Delete
New Ford updated oil cooler
New Ford HG's
ARP's
New ICP
Leveling kit
35" Mt's
4" MBRP Alum. tb exhaust
PMM coolant filter
cajunpsd is offline  
post #9 of 19 Old 08-12-2012, 06:28 PM
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Well I would take a second look at your ICP and connection.
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post #10 of 19 Old 08-12-2012, 06:32 PM Thread Starter
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I took Icp off earlier. Connector and 3 electrical blades were very clean. Is there any way to test it?

2007 F-250 King Ranch SD SWB 4x4....
155,000 miles
Edge CS..turbo timer..EGT..FP
Looney Wild tune dd
EGR Delete
New Ford updated oil cooler
New Ford HG's
ARP's
New ICP
Leveling kit
35" Mt's
4" MBRP Alum. tb exhaust
PMM coolant filter
cajunpsd is offline  
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