02 ford expedition cranks but wont start.

5

Asked by Sep 07, 2016 at 07:31 PM about the 2002 Ford Expedition XLT 4WD

Question type: Maintenance & Repair

I had to rebuild my 5.4 POS triton motor in my 02 ford expedition. Now it wont start. I have replaced the crank and cam position sensors, I tested all the fuses and fuel relay and pcm relay and pcm diode is new.  I replaced all the wires on the engine wire harness and rang them all out and tested resistance- got .2 ohms. I tested fuel cut off switch and theres power past the switch. I get 12 volts at every coil pack and injector. the fuel pump comes on for 1.5 seconds when turned on. when its cranked over I only get 1 pulse flash from noid light at injector 1. if turned off then on again it will flash 1 time again. no pulses to coil packs. I cleaned the ground connections and all are tight. I tested the fuel pressure at the shrader valve on the fuel rail and got no pressure but the instructions on the fuel guage says the motor must be running to read any pressure??  I'm lost now and don't know where to look next. when I tried starting fluid it tried to fire for a second but wouldn't start. now even starting fluid wont do anything.   Please help.

2 Answers

1,505

did you put in new timming chain in if so could be out of time when you put back together.

5

complete rebuild and timing marks all lined up perfect. I had another mechanic double checking all the steps. its strange that the fuel pump works (only 2 years old) but I cant get a pressure reading at the fuel rail. the heads and were machined and set at tdc. its a 2 chain system with single overhead cams. the new chains have stamped marks and colored links, its almost impossible to get it wrong. could the injection system be bleeding pressure somewhere and that shuts down the system? Bad or leaky injectors maybe? over the last 2 years Ive had to put over $6000 into it. nearly 80% under the hood is new or rebuilt. book is $4500 so I don't know when to stop and part it out. its so close to running and its in excellent condition.

Your Answer

Add photo

Related Questions

Search Ford Expedition Questions

Ford Expedition Experts

#1 T_S_T
T_S_T
Reputation 1,790
#2 Larry Sturgis
Larry Sturgis
Reputation 1,240
#3 lightGear
lightGear
Reputation 1,010
View All

Related Models For Sale

Used Chevrolet Tahoe
776 Great Deals out of 28,447 listings starting at $1,500
Used Ford Explorer
937 Great Deals out of 74,004 listings starting at $750
Used Chevrolet Suburban
461 Great Deals out of 18,781 listings starting at $1,399
Used Lincoln Navigator
117 Great Deals out of 5,625 listings starting at $1,299
Used Ford F-150
2,692 Great Deals out of 212,369 listings starting at $1,000
Used GMC Yukon
520 Great Deals out of 17,128 listings starting at $1,799
Used GMC Yukon XL
359 Great Deals out of 12,482 listings starting at $1,995
Used Cadillac Escalade
308 Great Deals out of 10,694 listings starting at $1,900
Used Ford Excursion
17 Great Deals out of 791 listings starting at $1,900
Used Dodge Durango
298 Great Deals out of 24,124 listings starting at $1,500
Used Toyota Sequoia
164 Great Deals out of 5,986 listings starting at $1,495
Used Ford F-250 Super Duty
396 Great Deals out of 45,084 listings starting at $2,000
Used Honda Pilot
463 Great Deals out of 19,638 listings starting at $599

Used Cars For Sale

2017 Ford Expedition XLT 4WD For Sale
1,235 listings starting at $38,595
2016 Ford Expedition XLT 4WD For Sale
8 Great Deals out of 188 listings starting at $28,220
2015 Ford Expedition XLT 4WD For Sale
130 listings starting at $22,995
2014 Ford Expedition XLT 4WD For Sale
3 Great Deals out of 58 listings starting at $15,995
2013 Ford Expedition XLT 4WD For Sale
6 Great Deals out of 66 listings starting at $14,988