I have an 05 Ranger that had IAC, TPS and Coil and plugs and wires changed about 6months ago. Fuel pump is good. It cranks but won’t start. It would start but ran rough and if accelerated it would stall. Now it won’t start at all. Code reader doesn’t detect any codes. Check engine obviously not on.

 

Cam position sensor?

 

I replaced sensor about 6 months ago when I had heads reworked. I replaced the sensor on top but not the synchronizer shaft. I may need to take a look at it though.

 

A faulty cam sensor won't keep it from starting.

A faulty crank shaft positon sensor would, but it's unlikely that's the problem.
You can go in there and pull the connection, just to check though.
Make sure it's clean with no corrosion.

Have someone crank the truck while you spray some starting fluid in the intake tube.
If it wants to start, then you have a fuel problem.
If it doesn't start, then you have an ignition problem.

Also, does you check engine light come on when the ignition key is in the ON position ?

 

Think it’d be an issue that I didn’t change synchronizer shaft?

 

Jeff I tried spraying fuel and starting fluid in intake tube. It will spin over strong and seems to try and start when I hold accelerator down and even seems to fire but won’t quite start.

 

No, the shafts bushing wear to the point where the mechanical tooth bangs into the sensor, it usually makes a lot of chirpy squeaky noise when it gets this bad.

When you replaced the actual sensor, it would have been immediately apparent if the old sensor was damaged.

I'm assuming that the fuel filter was replaced ???

Do the test with the starting fluid, it will give you a place to start trouble shooting.
Don't start throwing new parts at it until you narrow things down a bit.

 

Where in the intake did you spray it? Pull the intake off the TB and do it there, not at the MAF end.

 

That shows that the ignition is OK.
You have a fuel problem of some sort.

Did you replace the fuel filter ?

What kind of pump did you put in, new pumps can be faulty.
New means untested, but may be faulty.

Check your fuel pressure.
There is a schrader valve on the fuel rail for this.

There is also the fuel dampener right there as well.
Looks like a tiny chrome flying saucer with a vacuum line coming out of it.

Pull the vacuum line off, if there is fuel present, then the fuel dampener is faulty.

 

Okay. Yes I did start at the MAF. The CEL does come on when ignition turned on it goes out when trying to start. RPMs do go up when trying to start too. I shall try near the throttle body.

 

That's good that the CEL comes on, that tells us that the ECM is healthy.
Yes, spray the starting fluid after the MAF, but we are not actually trying to start the truck here.
We are just determining if it's fuel or ignition.
At best it will only run for a split second on starting fluid.
The fact that it does start a little tells us that there is ignition, but no fuel.

 

I used fuel and sprayed into the TB and it attempted to run. Once I pressed accelerator down. I had checked at the schrader valve and I had pressure but didn’t measure it with a gauge. I too am convinced that it is a fuel problem. I shall check the dampener next.

 

Pressure should be at a round 65 PSI at that schrader valve.

 

Don’t mean to show my ignorance but I am not finding this dampener. On the rail. Just where my main line attaches to the rail. And may it’s “built-in” right there. Although that just seems to be that spring fastener housing.

 

Also.
Turn the key on and off 4 times to the "ON" position.
Each time you do this, the pump runs for a few seconds and will build pressure.

If the truck starts on the 5th time and then dies, then the pump is suspect.

What brand of pump did you buy ?

 

I am not remembering the brand of pump that I bOught. It came from oriellys auto parts and was about 250.00 I believe.

 

The part isn't listed for 2005, but for my 1999, so I'm going to assume that Ford omitted it _ new design.

 

Try the procedure in post 15.

 

AFter 5 cycles of “on/ off” it did attempt to try and start. I may be looking at new pump and filter.

 

I also pushed in schrader valve and no way do I have 65PSI. I’d say I need a new pump.

 

Spend the money on a Motor Craft pump.
Not sure if Oreilly's sells motor craft though.
Maybe you can get your money back.

Even after market pumps only seem to last for a year or two at best.
The Ford ones go the longest.

2005 FORD RANGER 3.0L V6 Fuel Pump & Housing Assembly | RockAuto

 

Thanks for your help! Hopefully I was easy to work with. I’m a diesel mechanic but have been racking my brain on this one.

 

One expects new parts to be OK and working, but that's not always the case.
It can be extremely frustrating, that's for sure.

I'm still learning myself, when I bought my truck, it was the first fuel injected vehicle I've ever owned and knew next to nothing about electronic fuel injection and it's symptoms and how things worked; specifically.

I've learned most of what I know on this forum and from reading articles.

I grew up with carburetors, points and distributors, so I'm old school.

I understand the theory of how engines work, but fuel injection was still quite a leap.

I would imagine it's the same for diesel, you have a fuel pump in there with very high pressure, but I think they are more reliable ???

 

Yes I’d agree.

 

Okay so has new fuel pump and pressure check is 60-65PSI at schrader valve. It still isn’t getting fuel like it should. If I cycle the ignition 4-5times it’ll try and start but just can’t quite do it. I don’t see a dampener/regulator on fuel rail. I’ve called the parts store and asked for a price quote on one and they say we aren’t showing one for that vehicle. I don’t believe it has one but still not sure what the heck is wrong with this thing.