fuel temp sensor???

evansdmax · 03-31-2011, 06:21 AM

ok i'm geting code p0168 and p0181 and i went to carquest to get a fuel temp sensor bc i thought thats what it was... but they don't list one and neither does gm.. but they show a fuel pressure sensor and a coolant sensor... what ya'll think? it surges on the interstate some and skips when it's cold more than when it's hot i can clear the code and it comes right back... sometimes it willrun better than others but not at specific times....?? i wanna get it fixed today bc i'm off work if i can figure out what to do.

evansdmax · 03-31-2011, 06:59 AM

anybody? bump to the top for some answers

evansdmax · 03-31-2011, 07:42 AM

nobody had any problems with this?

TrevorG · 03-31-2011, 08:06 AM

If it's surging at idle I'd almost say it's your fpr.. But bump for an answer

Pura.Vida · 03-31-2011, 08:22 AM

I had mine throw a code, but I reset it and rolled on with it and have not had any problems since. My mechanic at the dealership told me he had never replaced one or seen that code, and could not find it in the parts list to even order it.

You should do a search, I have started a big thread about this, and so has one other person. No reason to start this one, just join in on another one already going, you will get more help that way because of the subscriptions already going.

jcbDuramax · 03-31-2011, 08:43 AM

yulp same code, still no answers thou. im showing more symtoms then you are thou. i have the ppe race vavle so im doubting the FPR on mine

DMAXchris · 03-31-2011, 08:46 AM

It can also be called a fuel rail temperature sensor I guess. I found this info while searching around...

Fuel Rail Temperature (FRT) sensor
Mounted under the turbocharged air outlet duct, the FRT sensor is a two-wire Negative Temperature Coefficient thermistor that the ECM uses to monitor fuel temperature. Because the fuel passes through a small radiator-style cooler (mounted underneath the cab), check for clogged cooler fins if the fuel temperature climbs too high.

http://www.google.com/search?hl=en&d...509fc152d027c3

jcbDuramax · 03-31-2011, 08:50 AM

Quote:

Originally Posted by DMAXchris

It can also be called a fuel rail temperature sensor I guess. I found this info while searching around...

Fuel Rail Temperature (FRT) sensor
Mounted under the turbocharged air outlet duct, the FRT sensor is a two-wire Negative Temperature Coefficient thermistor that the ECM uses to monitor fuel temperature. Because the fuel passes through a small radiator-style cooler (mounted underneath the cab), check for clogged cooler fins if the fuel temperature climbs too high.

thanks for the info. that gets me looking in one direction...but currently all the symptoms have seized to exist so i cant trouble shoot anymore until they come back...maybe it only happens in cold weather.

DMAXchris · 03-31-2011, 08:51 AM

I read that it can happen sometimes when using the block heater or grille cover below 0ºF.

evansdmax · 03-31-2011, 01:05 PM

Ok thanks my block heater has never ever been used on my truck and is a southern truck so it doesn't get to cold! it acts like a sensor I'm gonna do not searching thanks guys.

03-31-2011, 06:21 AM	eBay Motors #1 (permalink)
evansdmax DuramaxForum Veteran Join Date: Feb 2010 Location: Columbus,NC Posts: 1,262	fuel temp sensor??? ok i'm geting code p0168 and p0181 and i went to carquest to get a fuel temp sensor bc i thought thats what it was... but they don't list one and neither does gm.. but they show a fuel pressure sensor and a coolant sensor... what ya'll think? it surges on the interstate some and skips when it's cold more than when it's hot i can clear the code and it comes right back... sometimes it willrun better than others but not at specific times....?? i wanna get it fixed today bc i'm off work if i can figure out what to do. __________________ 03 CCSB EFI + 5" STRAIGHT PIPE + 33X12.50 18S ON EAGLE ALLOY 197'S + 250K MILES

03-31-2011, 06:59 AM	eBay Motors #2 (permalink)
evansdmax DuramaxForum Veteran Join Date: Feb 2010 Location: Columbus,NC Posts: 1,262	anybody? bump to the top for some answers __________________ 03 CCSB EFI + 5" STRAIGHT PIPE + 33X12.50 18S ON EAGLE ALLOY 197'S + 250K MILES

03-31-2011, 07:42 AM	eBay Motors #3 (permalink)
evansdmax DuramaxForum Veteran Join Date: Feb 2010 Location: Columbus,NC Posts: 1,262	nobody had any problems with this? __________________ 03 CCSB EFI + 5" STRAIGHT PIPE + 33X12.50 18S ON EAGLE ALLOY 197'S + 250K MILES

03-31-2011, 08:22 AM	eBay Motors #5 (permalink)
Pura.Vida Senior Member Join Date: Nov 2009 Location: ILM Posts: 768	I had mine throw a code, but I reset it and rolled on with it and have not had any problems since. My mechanic at the dealership told me he had never replaced one or seen that code, and could not find it in the parts list to even order it. You should do a search, I have started a big thread about this, and so has one other person. No reason to start this one, just join in on another one already going, you will get more help that way because of the subscriptions already going. __________________ Jordan 05 LLY CC SB 4X4, K&N ON LBZ INTAKE, RESONATOR PLUG, LBZ MP, 4" SILVERLINE, PCV RE-ROUTE, PORTED FUEL RAIL FITTING, EGR DELETE TUBE, FPRV SHIMMED, AIR DOG II 165, DEEP PAN/FILTER LOCK, TRANS-GO JR SHIFT KIT, SYN BLEND TRANS FLUID, PPE STANDARD, H2 WHEELS WRAPPED IN 295 GRAPS, HID H/L/F ALL ON, LED PLATE LIGHTS, MANUAL HIGH IDLE, GATORBACK SERP BELT, TORSION KEYS, TIE ROD SLEEVES, ARP HEAD STUDS Oxcart- 01-18-2011, 11:43 PM Thread-efi smoke tune help "You will be back hippy."

03-31-2011, 08:46 AM	eBay Motors #7 (permalink)
DMAXchris Longbeds FTW Join Date: Oct 2008 Location: Natrona Heights, PA Posts: 13,285	It can also be called a fuel rail temperature sensor I guess. I found this info while searching around... Fuel Rail Temperature (FRT) sensor Mounted under the turbocharged air outlet duct, the FRT sensor is a two-wire Negative Temperature Coefficient thermistor that the ECM uses to monitor fuel temperature. Because the fuel passes through a small radiator-style cooler (mounted underneath the cab), check for clogged cooler fins if the fuel temperature climbs too high. http://www.google.com/search?hl=en&d...509fc152d027c3 __________________ 06 Dmax/Allison EC/LB 4x4 TTS PowerLoader III • full billet Bully Dog stage 7 • BCI 7" intake with custom snorkle • fender vents • quintuplet shotgun cat stacks • 22" Rockstars • Huge "Dirtymax" sticker • -60% nozzles • extra pcv with dual catch cans • compounded EGR • silencer ring MIA • 4.56 gears • Lowered 5.5" in the back • Lifted 6" in the front • Monster sticker • flat bill mod • 8' CB whip • blacked out reverse lights • gauges everywhere 08 BMW 528xi 00 Buick Regal GS Last edited by DMAXchris; 03-31-2011 at 08:50 AM.

03-31-2011, 08:51 AM	eBay Motors #9 (permalink)
DMAXchris Longbeds FTW Join Date: Oct 2008 Location: Natrona Heights, PA Posts: 13,285	I read that it can happen sometimes when using the block heater or grille cover below 0ºF. __________________ 06 Dmax/Allison EC/LB 4x4 TTS PowerLoader III • full billet Bully Dog stage 7 • BCI 7" intake with custom snorkle • fender vents • quintuplet shotgun cat stacks • 22" Rockstars • Huge "Dirtymax" sticker • -60% nozzles • extra pcv with dual catch cans • compounded EGR • silencer ring MIA • 4.56 gears • Lowered 5.5" in the back • Lifted 6" in the front • Monster sticker • flat bill mod • 8' CB whip • blacked out reverse lights • gauges everywhere 08 BMW 528xi 00 Buick Regal GS

03-31-2011, 01:05 PM	eBay Motors #10 (permalink)
evansdmax DuramaxForum Veteran Join Date: Feb 2010 Location: Columbus,NC Posts: 1,262	Ok thanks my block heater has never ever been used on my truck and is a southern truck so it doesn't get to cold! it acts like a sensor I'm gonna do not searching thanks guys. __________________ 03 CCSB EFI + 5" STRAIGHT PIPE + 33X12.50 18S ON EAGLE ALLOY 197'S + 250K MILES

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