01 7.3 no start

kadeninabnitt · Aug 25, 2015

All right guys this one has me stumped its a buddies truck he came home parked it ran fine came back out the next morning with a no start. I changed cps swapped idm with good one. he had his scanner on it before I got there and said it would build ICP with the sensor unplugged but nothing plugged in so swapped the ICP sensor as well. I didn't get a chance to put the scanner back on after the sensor swap I'll do that tomorrow but still no start no smoke from the exhaust and no tach movement. the no tach movement made me think the new cps was bad so I took the one out of my personal truck I was driving swapped it in same story. still no start but why no tach movement bad wires maybe? wts light comes on no cel or codes any ideas need to get this going.

lincolnlocker · Aug 25, 2015

does wts light shut off? all fuses good? fuel bowl heater fuse specifically..

live life full throttle

02strokin · Aug 25, 2015

Good ole fuel bowl heater fuse.. haha whatever you do don't bypass or hot wire it trust me...

Arisley · Aug 25, 2015

If the fuel bowl heater fuse is blown, unplug the fuel bowl heater from the fuel bowl.

How is fuel pressure?

kadeninabnitt · Aug 25, 2015

Fuses are all good wts light acts as it should I'm gonna trace the wires back from the cps see if that's the issue

mandkole · Aug 25, 2015

fuel pump is running and you have pressure confirmation? Check IPR plug, stamped nut and magnet. If its suddenly not building ICP, then move to the IPR-- if its not working, its allowing ICP to drain.

Its possible to have a bad new CPS and plenty of guys have complained of aftermarket units. Ford or Intl CPS only. (Bad CPS often throws a code)

Justin@DP-Tuner · Aug 25, 2015

You said it built no ICP with the ICP sensor plugged in, correct? If so, that is likely your problem. It should always give an ICP reading with the sensor unplugged, as that is a default value. However, the injectors actually need to see 500psi of ICP to fire, so even though you are getting the default reading of ICP, the truck will never fire if there is not enough actual pressure.

kadeninabnitt · Aug 25, 2015

ICP sensor was swapped with one off a running truck along with the cps I pulled the cps out of my truck and put his in mine mine fires up and runs fine fuel is getting to the bowl IPR nut is on and tight and its plugged in so we're thinking IPR valve

mandkole · Aug 25, 2015

it happens. When the PO had my truck, he made a good dyno pull and as he was removing it from the dyno, it died with no ICP and would not restart. IPR suddenly went dead--new IPR and back in business.

Arisley · Aug 25, 2015

Pull the IPR electromagnet off of your truck and put it on his truck. Those electromagnets do go bad.

kadeninabnitt · Aug 25, 2015

I'll give that a shot I'll just pull the whole IPR from my parts truck it was running last week so should be good

kadeninabnitt · Aug 29, 2015

IPR swap did the trick got it up and going

lincolnlocker · Aug 29, 2015

kadeninabnitt said:
IPR swap did the trick got it up and going

good deal! 7.3s are tricky bastards sometimes..

live life full throttle

Arisley · Aug 29, 2015

lincolnlocker said:
good deal! 7.3s are tricky bastards sometimes..

live life full throttle

Lots of little bitty moving parts that are getting really, really old.

lincolnlocker · Aug 29, 2015

Arisley said:
Lots of little bitty moving parts that are getting really, really old.

yes for sure!!

live life full throttle

dangerous1 · Aug 29, 2015

Arisley said:
Lots of little bitty moving parts that are getting really, really old.

There are days I look at my 7.3 and wonder how its still running. Then I shut the hood and try not to think about it.

JHILL · Aug 30, 2015

mandkole said:
it happens. When the PO had my truck, he made a good dyno pull and as he was removing it from the dyno, it died with no ICP and would not restart. IPR suddenly went dead--new IPR and back in business.

^^^ goes back a few years lol

WILD_PHIL · Sep 4, 2015

I see this hasn't been updated in a few days, so hope yall don't mind me Hi jacking the thread.

Same thing happened to me. Put about 100 miles on my truck on a Saturday. Came out Sunday and it wouldn't start. I crossed the solenoid on the passenger side fender and it fired right up. I went a head and replaced that solenoid. Didn't work. A buddy suggested it could possibly be the neutral safety switch. Could be the battery cables. I'm not really sure what order to start looking at things. Truck runs fine with no issues, it just won't start by the ignition. All the blade fuses are good. Any suggestions will be appreciated.

E99 F350/zf6/guages/arp/comp/stellite/ billet wheel/ bellowed... Need more fuel and more air.