Code Problems - Ford Powerstroke Diesel Forum

 
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post #1 of 6 Old 12-13-2009, 04:19 PM Thread Starter
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Code Problems

I keep having the same three codes coming up in my Excursion - P1391, P1393 and P1248. I just put in a new GPR and it didn't help. Am I looking at glow plugs, valve cover gaskets and a new wiring harness next? The crazy thing is that the truck starts fine and no white smoke. HELP PLEASE!


1997 F250 XLT 7.3 ENGINE

Extra Cab Longbed
285/75/16 BFG Tires
Standard Transmission
Heavy Duty Clutch
ATS Turbo, Intercooler
4" Straight Exhaust
K&N Air Filter
Superchips Programmer on Tow safe
Pillar Gauge Pod with AutoMeter Boost, Exhaust Temp
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post #2 of 6 Old 12-13-2009, 07:54 PM
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P1248 Turbo Boost Pressure Not Detected
P1391 Glow Plug Circuit Low Input Bank No. 1(Right)
P1393 Glow Plug Circuit Low Input Bank No. 2 (Left)

for 1248, check the connection at your MAP sensor and the hose going from the spyder to the MAP sensor... also check the boots on the intercooler pipes... your looking for any rips, tears, or cracks where a boost leak can occur....

1391 and 1393 together means that none of the glow plugs are getting power... so either you have another bad GPR, or its hooked up backwards, or both the left and right connections on the UVC harness's have come loose... they make upgraded clip so that wont happen again...

early 99 cclb srw 4x4, auto, intake, exhaust, and a bunch of other asthetics to make it look better...


*SOLD* early 99 cc drw 2wd auto, PMT2 pcm with PHP tunes, exhaust w/ 6" tip, MSP intake, AD's, late 99 conversion, gauges, Terminator modded 17* HPOP, and some other pointless stuff like the zoodad, 6.0IC, etc etc....

499K original miles when sold...
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post #3 of 6 Old 12-14-2009, 04:32 PM Thread Starter
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Quote:
Originally Posted by blk99 View Post
P1248 Turbo Boost Pressure Not Detected
P1391 Glow Plug Circuit Low Input Bank No. 1(Right)
P1393 Glow Plug Circuit Low Input Bank No. 2 (Left)

for 1248, check the connection at your MAP sensor and the hose going from the spyder to the MAP sensor... also check the boots on the intercooler pipes... your looking for any rips, tears, or cracks where a boost leak can occur....

1391 and 1393 together means that none of the glow plugs are getting power... so either you have another bad GPR, or its hooked up backwards, or both the left and right connections on the UVC harness's have come loose... they make upgraded clip so that wont happen again...
I will check these things tonight. Is there any way to clean the MAP sensor or am I just looking for bad connections? As for the boots - are these just the ones up on top of the motor or are there more I should look at? Thanks for your help.


1997 F250 XLT 7.3 ENGINE

Extra Cab Longbed
285/75/16 BFG Tires
Standard Transmission
Heavy Duty Clutch
ATS Turbo, Intercooler
4" Straight Exhaust
K&N Air Filter
Superchips Programmer on Tow safe
Pillar Gauge Pod with AutoMeter Boost, Exhaust Temp
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post #4 of 6 Old 12-15-2009, 06:09 PM Thread Starter
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Looks Fine

I checked the connection and hose on the MAP sensor and everything looks fine. Actually it all looked brand new, tight and clean. No cracks in any of the boots and all connections are tight. I found the connections on both valve covers and they were tight also.

So- I cleared the codes, plugged in and called it a night in hope things would clear up . NOT! I turned the key on this morning and waited for the wait to start light to go off - then the SES light turned on immediately just like before. So am I to assume that maybe both valve cover gaskets need to be replaced next or possibly the glow plugs as well? How can I check the valve covers without replacing them?


1997 F250 XLT 7.3 ENGINE

Extra Cab Longbed
285/75/16 BFG Tires
Standard Transmission
Heavy Duty Clutch
ATS Turbo, Intercooler
4" Straight Exhaust
K&N Air Filter
Superchips Programmer on Tow safe
Pillar Gauge Pod with AutoMeter Boost, Exhaust Temp
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post #5 of 6 Old 12-15-2009, 08:53 PM
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does the SES light go off after you start it?

early 99 cclb srw 4x4, auto, intake, exhaust, and a bunch of other asthetics to make it look better...


*SOLD* early 99 cc drw 2wd auto, PMT2 pcm with PHP tunes, exhaust w/ 6" tip, MSP intake, AD's, late 99 conversion, gauges, Terminator modded 17* HPOP, and some other pointless stuff like the zoodad, 6.0IC, etc etc....

499K original miles when sold...
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post #6 of 6 Old 12-16-2009, 05:03 AM Thread Starter
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Quote:
Originally Posted by blk99 View Post
does the SES light go off after you start it?
No - stays on with the same three codes.
P1391
P1393
P1248


1997 F250 XLT 7.3 ENGINE

Extra Cab Longbed
285/75/16 BFG Tires
Standard Transmission
Heavy Duty Clutch
ATS Turbo, Intercooler
4" Straight Exhaust
K&N Air Filter
Superchips Programmer on Tow safe
Pillar Gauge Pod with AutoMeter Boost, Exhaust Temp
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