Hey,
I am new to this message board so please bare with me.
I have a 2006 3.0 Ford Ranger with 125k kilometers on engine. Recently I have had trouble when starting . It will crank over but sometimes I have to step on the gas pedal to get engine started. I have just changed plugs ( gaped to .46) wires, camshaft sensor. I have cleaned out the IAC . I am stumped and want to get this truck running smoother. I scaned these codes the other day before i changed the plugs wires and cam sensor. P0446, P0453, P1336, P0446, P0446

I deleted all the codes took it for a drive now i get p0446 for codes read.

Anyone have any sugestions on what to test. I thought maybe it was the inertia switch( which i removed and jump closed the circuit) still same lag when turning over. I try turning key to run withother cranking 3-4 times to prime the lines. Still getting lag.

Please help!

 

Welcome to the forum


p0446 is an EVAP(sucks fumes from gas tank) system code so wouldn't effect starting.

P1336 is a Cam sensor code which could effect starting on the 3.0l

Cam synchro unit on the 3.0l needed to be changed every 100k miles or so, the bushings would wear out.


What I would do is to see if it is a lack of spark or fuel that is causing the delayed start.

50/50 test
Remove Power Brake vacuum hose from intake manifold
Spray some Quick Start Starting fluid(ether) into the intake
Replace hose

Crank engine
If it fires right up then spark is working, lack of fuel is the delay
If it doesn't start right up then spark is the issue
50/50


Computer only knows you are trying to start the engine when it see "pulses" from the Crank(CKP) sensor and the Cam sensor(CPS), as starter motor turns the engine over the computer sees the pulses from these and uses them to time spark and fuel injectors.
So delayed pulse would mean delayed spark or delayed fuel

 

Thanks Ron I will try that tonight. I have also sent you a private message.
I was just out messing with it cleaning hte IAC again and making sure there is no vacuum leaks. I had it running for few minutes turned it off and then cranked it again and bam it turned over no issues. Im beginning to think this is a fuel delivery problem. I appreciate any insight and information on what to do next.

 

Another test when there is a no start is to stop cranking and pull out 1 spark plug, any one.
It should be wet with fuel, if not..............
If it is wet then spark is the issue

 

I own a 1991 Ranger XLT, with a 3.0 V6. I am now using it for work and with close to 250,000 miles it is still running great. My problem is that I now have issues with the air intake tube,(Runs between the air cleaner, which is on the passanger side, and the throttle body which is on the drivers side and is part of the intake manifold. ( there is a small branch that is for the vacuum line that is split) I have searched almost everywhere and I can't find one. The truck needs to pass California smog. I am looking for suggestions

 

Welcome to the forum

You should start your own thread for new questions

The air tube from air filter box(MAF sensor) to the throttle body(intake) won't have a vacuum hose attached

It does have a larger hose that should run to the oil filler tube on the valve cover, this is the Fresh air Vent for the PCV system.