My new to me sport trac

[mcarroll02]

Well i can tell you that you can't vacuum bleed the rear brakes on an obs f250 with rabs. Has to be pressurized on the m.c. side. Luckily i have a neighbor that is self employed when i need assistance. Anyways. No updates on the sport trac except it rides nice and is quiet now thanks to all the parts ive changed. Gonna use my 4 day weekend to get the interior framing done on my cabin. Happy turkey day. Dont eat too much gobbler and dressin

 

[mcarroll02]

I was really considering a brush guard for my truck. I like the look of them. But by the time i would get through re engineering to hold up to a winch mount, i can do a move bumper kit for a little cheaper. Anyways, thats a next year project. Similar to the d60 swap on my f250...

 

[mcarroll02]

Let me pick yalls minds a bit. A previous owner of my st appearantly didnt use floor mats, and there's a huge hole in the factory rubber floor where the driver's heels would be. Im between just ripping it out and doing a roll on herculiner floor, and getting the acc vinyl floor kit. If i go with the vinyl, i thought about making a diamond tread heel pad to prevent the same thing happening to it, although i would use floor mats. Thoughts?

 

[mcarroll02]

Coming home last night in the rain, my st started running very rough and way low on power. Died just as I turned in my driveway. Took several attempts but finally got it to crank and maie it on up the drive and park. It was running rough then. Had it start running rough in the rain once before. Went out to leave for work this morning and its a crank no start. After messing with it tonight, i noticed the tach doesnt move when cranking. I suspect my crank sensor is bad. Scan tool shows bank 1 and 2 lean, and cylinders 3 and 6 misfire. Any ideas?

 

[Pat in RI]

You could be right on trac with checking the crank sensor which is easy to replace. The other component to check is the coil box and the condition of its ground connection. Use some dielectric grease under each boot and clean the ground strap and grease it. Might help. Good luck.

 

[Brett H]

Coming home last night in the rain, my st started running very rough and way low on power. Died just as I turned in my driveway. Took several attempts but finally got it to crank and maie it on up the drive and park. It was running rough then. Had it start running rough in the rain once before. Went out to leave for work this morning and its a crank no start. After messing with it tonight, i noticed the tach doesnt move when cranking. I suspect my crank sensor is bad. Scan tool shows bank 1 and 2 lean, and cylinders 3 and 6 misfire. Any ideas?

Maybe check the spark plug wire insulation for cracks?

 

[cadman777]

Please post some codes.
Back in the day, we looked at 2 things:
SPARK
FUEL
It was easy back then.
But not today's vehicles.

If it was my truck, and if the BATTERY is known good, and barring engine mechanical issues (like timing chain), the first thing I'd check is the FUEL pressure.
That's the easiest thing to check.
If you have fuel pressure that doesn't decrease, then you can rule out the fuel supply.
But that doesn't mean you have good fuel delivery at the injectors.

Next I would check for SPARK.
Use a fat ground wire connected to a good engine ground, and then loosen all your plug wires at the distributor.
Pull one wire and allow it to jump the gap to you grounded wire while someone cranks it.
Do that with all the wires.
If you have good spark, then you know your spark delivery is good.
But that doesn't mean you have good spark at the plugs.

If both work, then at this point you know you have fuel & spark @ the source.
If either doesn't work, then you have to track down the cause.
No FUEL pressure means possible mechanical failure in pump, or electrical issue (fuse, relay, wiring, connectors etc.).
If no SPARK, that means there's a problem with the electrical supply (fuse, relay, wiring, connectors, etc.), or coil or signal from computer.

At that point you have to check signals from sensors, modules, wiring, etc.
That's where the DVM or scope come into play.
You also need the 'secret knowledge' that the FSM has in it, so you know what the voltage or resistance values are supposed to be.
It's no easy task to find the cause of a NO START when the codes are generic (but what exactly are the codes?).
With more specific codes, you can get a possible start on narrowing down your problem.

 

[mcarroll02]

Maybe check the spark plug wire insulation for cracks?

New wires less than a year old.

 

[mcarroll02]

Please post some codes.
Back in the day, we looked at 2 things:
SPARK
FUEL
It was easy back then.
But not today's vehicles.

If it was my truck, and if the BATTERY is known good, and barring engine mechanical issues (like timing chain), the first thing I'd check is the FUEL pressure.
That's the easiest thing to check.
If you have fuel pressure that doesn't decrease, then you can rule out the fuel supply.
But that doesn't mean you have good fuel delivery at the injectors.

Next I would check for SPARK.
Use a fat ground wire connected to a good engine ground, and then loosen all your plug wires at the distributor.
Pull one wire and allow it to jump the gap to you grounded wire while someone cranks it.
Do that with all the wires.
If you have good spark, then you know your spark delivery is good.
But that doesn't mean you have good spark at the plugs.

If both work, then at this point you know you have fuel & spark @ the source.
If either doesn't work, then you have to track down the cause.
No FUEL pressure means possible mechanical failure in pump, or electrical issue (fuse, relay, wiring, connectors etc.).
If no SPARK, that means there's a problem with the electrical supply (fuse, relay, wiring, connectors, etc.), or coil or signal from computer.

At that point you have to check signals from sensors, modules, wiring, etc.
That's where the DVM or scope come into play.
You also need the 'secret knowledge' that the FSM has in it, so you know what the voltage or resistance values are supposed to be.
It's no easy task to find the cause of a NO START when the codes are generic (but what exactly are the codes?).
With more specific codes, you can get a possible start on narrowing down your problem.

I cant give you the exact codes as i cleared them already. I do remember what each one said though.

 

[Pat in RI]

I go from simple to complex and cheap to expensive when I try to problem solve. Wish I was better at it. You'll get her going!!