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  #1  
Old 07-07-2017, 12:42 PM
Hal_396 Hal_396 is offline
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Default 07 2.3L Cranks but no start

Truck was fine when shut off. Now won't start. No CEL or codes logged. Put in a ignition module, fuel filter, checked all fuses and patched new relay's in. Still no start.

When I was sitting along side the road waiting for a tow truck, I reset the crash swt under the glove box. Could have sworn it was tripped but maybe not.

I'm guessing its either the fuel pump module or PCM. I'll check fuel pressure tomorrow and then see if I have spark.

It's an 07 2.3L with 102,000 miles on it.
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  #2  
Old 07-07-2017, 11:57 PM
GSF1200S GSF1200S is offline
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Default Re: 07 2.3L Cranks but no start

Quote:
Originally Posted by Hal_396 View Post
Truck was fine when shut off. Now won't start. No CEL or codes logged. Put in a ignition module, fuel filter, checked all fuses and patched new relay's in. Still no start.

When I was sitting along side the road waiting for a tow truck, I reset the crash swt under the glove box. Could have sworn it was tripped but maybe not.

I'm guessing its either the fuel pump module or PCM. I'll check fuel pressure tomorrow and then see if I have spark.

It's an 07 2.3L with 102,000 miles on it.
Let us know what you find. I like to keep track of the problems that come up in case I run into the same one

I have a 02 pushing 100k soon. Id check for spark and then check fuel as spark is easier, but your call.
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2002 Ford Ranger XLT Supercab, 2.3L Duratec I4, 5-speed manual, 4.10 gears, ~100,000 miles
Power nothing with air conditioning; crank windows for life!
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  #3  
Old 07-08-2017, 05:58 AM
tomw0 tomw0 is offline
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Default Re: 07 2.3L Cranks but no start

Did you hear the fuel pump run as you turn the key to ON? Pause before going to START, and listen for the hum of the pump. The system should run the pump for a few seconds and then shut off. If you hear that, the pump is at least running, and the computer aware.
If you have no spark, I believe the crank position sensor or cam position sensor may have gone toasty. The cam position must be known before spark is 'allowed' when cranking the engine over.
tom
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  #4  
Old 07-10-2017, 09:18 PM
Hal_396 Hal_396 is offline
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Default Re: 07 2.3L Cranks but no start

Spent some time troubleshooting things this past weekend. All things lead to the pump. I have a new Motorcraft pump on order from Rock Auto. I'll post back my results later this week when I get it installed.
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  #5  
Old 07-11-2017, 09:13 AM
modelageek modelageek is offline
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Default Re: 07 2.3L Cranks but no start

Quote:
Originally Posted by Hal_396 View Post
Truck was fine when shut off. Now won't start. No CEL or codes logged. Put in a ignition module, fuel filter, checked all fuses and patched new relay's in. Still no start.

When I was sitting along side the road waiting for a tow truck, I reset the crash swt under the glove box. Could have sworn it was tripped but maybe not.

I'm guessing its either the fuel pump module or PCM. I'll check fuel pressure tomorrow and then see if I have spark.

It's an 07 2.3L with 102,000 miles on it.
You don't have a separate ignition module. It's part of the PCM. Did you replace the PCM? I don't know what "patched new relays in" means?

Easy way to see if it might be the fuel pump, etc is to pour a little gas into the TB.

Sent from my SM-J320V using Tapatalk
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2004 Ext Cab, 4WD, 4.0, Auto, 154k. (4.0 engine is out of a 2009 Ranger w/96k) ( as of 7/1/2017)

2004 Ranger, Ext Cab, 2WD, 3.0, 5 speed , 4WABS, crank windows, no cruise, Edge 116k.(6/5,2014) (SOLD).
1999 Ford Ranger, Reg Cab, 2.5, 5 speed, 2WD, no AC, 150k (SOLD).
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  #6  
Old 07-11-2017, 10:36 AM
tomw0 tomw0 is offline
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Default Re: 07 2.3L Cranks but no start

You can pull a vacuum line and squirt some carb cleaner into the tube which will feed it to the intake as an alternative to removing the air intake tube. Whenever I try to feed fuel to the intake behind the throttle plate, it always makes a mess, and dribbles out onto the engine. Feeding through a tube seems like a good after the mess.
WD40 used to be flammable enough to start lawnmower engines as a test to see if the sparky was still working or if the carb was gummed/dirty/etc. Dunno if the latest mix is still a workable fuel for that purpose. If so, you can use the tube poked into a vacuum line for a clean squirt.
tom
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  #7  
Old 07-13-2017, 09:08 PM
Hal_396 Hal_396 is offline
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Default Re: 07 2.3L Cranks but no start

It ended up being the fuel pump. Installed the new one and it started right up.

modelaGeek, I should have said coil pack. "Patched in" means tried new parts then installed the original ones back in. I guess that's aircraft lingo.

Last edited by Hal_396; 07-13-2017 at 09:12 PM.
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  #8  
Old 08-07-2017, 11:45 AM
Hal_396 Hal_396 is offline
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Default Re: 07 2.3L Cranks but no start

Well, this is interesting. The new fuel pump lasted about 3 weeks then failed. Checked power & ground at the pump and everything checks good. Instead of buying another Motorcraft module I have ordered a ACDELCO pump for about $45. See if this one will last longer than 3 weeks.
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  #9  
Old 08-08-2017, 07:07 AM
tomw0 tomw0 is offline
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Default Re: 07 2.3L Cranks but no start

Unless you bought from Fly By Night Auto Parts, the pump should still be under warranty, and replaced at no cost to you.
Every pump I have seen listed indicates they will be warrantied ONLY if the 'sock' on the pickup is replaced. Why? I suppose an old sock could be partially blocked, and limit flow. Some pumps need flow & return flow splashing onto the pump to keep it cooled.
Is there a reason why you should not be able to return the pump and ask for a replacement or refund?
tom
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  #10  
Old 08-09-2017, 01:12 PM
Hal_396 Hal_396 is offline
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Default Re: 07 2.3L Cranks but no start

Well the new pump didn't help. Still no fuel pressure. Good power, (11.10 volts), good ground. No trouble codes.

The truck may stay parked for awhile.
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  #11  
Old 08-09-2017, 01:28 PM
EaOutlaw1969 EaOutlaw1969 is offline
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Default Re: 07 2.3L Cranks but no start

11 volts is not good voltage for a 12 volt system.

Make sure your battery is fully charged and the battery connections are good.

Then you need to diagnose the power to the pump.

Could be a bad fuell pump relay, bad connection, bad ground etc.
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  #12  
Old 08-09-2017, 01:57 PM
modelageek modelageek is offline
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Default Re: 07 2.3L Cranks but no start

Quote:
Originally Posted by Hal_396 View Post
Well the new pump didn't help. Still no fuel pressure. Good power, (11.10 volts), good ground. No trouble codes.

The truck may stay parked for awhile.
Quote:
Originally Posted by EaOutlaw1969 View Post
11 volts is not good voltage for a 12 volt system.

Make sure your battery is fully charged and the battery connections are good.

Then you need to diagnose the power to the pump.

Could be a bad fuell pump relay, bad connection, bad ground etc.
x 2

seems odd that a brand new $300 motorcraft fuel pump would fail in 3 weeks.

fyi, the PCM's on these truck very rarely fail.
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2004 Ext Cab, 4WD, 4.0, Auto, 154k. (4.0 engine is out of a 2009 Ranger w/96k) ( as of 7/1/2017)

2004 Ranger, Ext Cab, 2WD, 3.0, 5 speed , 4WABS, crank windows, no cruise, Edge 116k.(6/5,2014) (SOLD).
1999 Ford Ranger, Reg Cab, 2.5, 5 speed, 2WD, no AC, 150k (SOLD).
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  #13  
Old 08-11-2017, 05:40 AM
tomw0 tomw0 is offline
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Default Re: 07 2.3L Cranks but no start

Does an 07 have a 'fuel pump driver module' that pulses the DC to the pump motor to regulate pressure? You can have power, depending in how you measure, but a driver failure would make the pump seem dead.
If you jumper 12V directly to the pump(NO SPARKS,...), if it doesn't run, that's the pump, if it does, but there's no pressure, there is likely a blockage somewhere.
tom
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  #14  
Old 08-12-2017, 05:13 PM
Hal_396 Hal_396 is offline
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Default Re: 07 2.3L Cranks but no start

Well messed around with it today. Tried to start and of course it wouldn't. By passed the inertial switch, no start. Pulled the fuel pump relay out again and switched it with the A/c clutch relay and presto, it started. Swapped the relays back and it still started .

I'll check the relay base later but I'm sure it OK.

The wiring diagram doesn't show a driver module. But it is controlled by the PCM. It's an intermittent problem so I'm afraid to take it anywhere until I find a hard fix.

It never has quit while I was driving it. Only when I try and start it after shutting it off. I will try a different key next time it buggers up. It has the chipped anti theft key so maybe the key has gone bad.

I'm trying everything before I change the PCM.
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  #15  
Old 08-13-2017, 05:28 AM
tomw0 tomw0 is offline
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Default Re: 07 2.3L Cranks but no start

When you turn the key to ON, does the fuel pump run for a second or two, or does it run and run and run for a longer period of time?
If the pump runs longer than a few seconds, wait until it stops before trying to start the engine. If that works, consistently, check the ECM for dying/dead capacitors, or corroded capacitor lead wires, and repair as noted. That was a failure in the EEC-IV computers due to age and corrosion. Electrolytic capacitors have a 'goo' inside that can dry out over time, and make them non-capacitors, the effects are unreliable.
tom
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