Out of ideas, can't fix ETC Failsafe.. Please help.

Dan Swenson said:
Yes. Dies when you pull maf. ...
Click to expand...

That's not what he meant. Unplug the MAF while the key is off, then start the engine and see what happens. It will run with the MAF disconnected, using default estimates for air flow. You should never, ever, unplug it while the engine is running!
 
joegr said:
That's not what he meant. Unplug the MAF while the key is off, then start the engine and see what happens. It will run with the MAF disconnected, using default estimates for air flow. You should never, ever, unplug it while the engine is running!
Click to expand...
Ok
 
Replace Crankshaft Position Sensor...what do you have to lose ...it may be a faulty throttle position sensor also ....did you unhook the battery of 30 minutes after installing new throttle?
 
AmsterDutch said:
Replace Crankshaft Position Sensor...what do you have to lose ...it may be a faulty throttle position sensor also ....did you unhook the battery of 30 minutes after installing new throttle?
Click to expand...
Would I not have a code for crankshaft position sensor?

Not 30 minutes but I did disconnect the battery and jumped the neg to pos for 5 minutes. Then did a relearn.
 
Dan Swenson said:
Where is that sensor located on a gen 2?
Click to expand...

Bottom of the engine at the back. You would have a code. I really don't like these random throw parts at it suggestions. There's no reason to disconnect the battery during/after throttle body swap. I don't know where that thought is coming from.

Maybe time to get Forscan and chart some stuff, like fuel trims, air flow, throttle position, and so on.
 
Dan Swenson said:
Wonder what’s up with that?
Click to expand...
"If the car dies when you disconnect the mass airflow sensor, then that means it was working right and that your computer has issues. It isn’t able to use the tables programmed in it to guess the amount of fuel needed. Also, if the computer isn’t the issue, then it means one of the other sensors is probably off if the car isn’t able to keep running without the mass airflow sensor because the sensor was helping the car compensate for the other issues that it was having. So as you can see disconnecting the mass airflow sensor is actually a good way to test a variety of things." Reference from AutoGuyLand
 
joegr said:
Bottom of the engine at the back. You would have a code. I really don't like these random throw parts at it suggestions. There's no reason to disconnect the battery during/after throttle body swap. I don't know where that thought is coming from.

Maybe time to get Forscan and chart some stuff, like fuel trims, air flow, throttle position, and so on.
Click to expand...
Where can I get a forscan and what model?
 
Dan Swenson said:
Where can I get a forscan and what model?
Click to expand...
Download it on smartphones which would be Forscan lite $5.99 does everything that Forscan for Windows on laptop does if you go with Forscan for Windows it's free download
FORScan OBD2 Adapter, VINT-TT55502 ELMconfig ELM327 modified For all Windows compatible with Ford Cars F150 F250 and Light Pickup Truck Scan Tool, Code Reader MS-CAN HS-CAN Switch
 
AmsterDutch said:
Download it on smartphones which would be Forscan lite $5.99 does everything that Forscan for Windows on laptop does if you go with Forscan for Windows it's free download
FORScan OBD2 Adapter, VINT-TT55502 ELMconfig ELM327 modified For all Windows compatible with Ford Cars F150 F250 and Light Pickup Truck Scan Tool, Code Reader MS-CAN HS-CAN Switch
Click to expand...
Thank you. Just ordered it.
 
AmsterDutch said:
"If the car dies when you disconnect the mass airflow sensor, then that means it was working right and that your computer has issues. It isn’t able to use the tables programmed in it to guess the amount of fuel needed. Also, if the computer isn’t the issue, then it means one of the other sensors is probably off if the car isn’t able to keep running without the mass airflow sensor because the sensor was helping the car compensate for the other issues that it was having. So as you can see disconnecting the mass airflow sensor is actually a good way to test a variety of things." Reference from AutoGuyLand
Click to expand...

This is not very correct for the LS. It will normally stall if you unplug the MAF while it is running. It should run (not well) with the MAF disconnected, but you have to disconnect while the engine is off!
 
AmsterDutch said:
Download it on smartphones which would be Forscan lite $5.99 does everything that Forscan for Windows on laptop does ...
Click to expand...

Sorry, you couldn't be much more wrong on this.
Forscan on Android or IOS is just a little more than a code reading tool.
Forscan on Windows allows you look into a lot more and do some programming, including PATS.
 
joegr said:
Sorry, you couldn't be much more wrong on this.
Forscan on Android or IOS is just a little more than a code reading tool.
Forscan on Windows allows you look into a lot more and do some programming, including PATS.
Click to expand...
Forscan lite allowed me to reprogram my ABS module and steering and yaw rate sensor...did the same service as the Windows version...Never had to update the PCM but it's on Forescan Lite also
 
joegr said:
. It should run (not well) with the MAF disconnected, but you have to disconnect while the engine is off!
Click to expand...
Yes I agree you should disconnect the MAF while car isnt running....I can't agree more with this statement though....

"If the car dies when you disconnect the mass airflow sensor, then that means it was working right and that your computer has issues. It isn’t able to use the tables programmed in it to guess the amount of fuel needed."
 
The article goes on to say .. "Also, if the computer isn’t the issue, then it means one of the other sensors is probably off if the car isn’t able to keep running without the mass airflow sensor because the sensor was helping the car compensate for the other issues that it was having."
 
joegr said:
Sorry, you couldn't be much more wrong on this.
Forscan on Android or IOS is just a little more than a code reading tool.
Forscan on Windows allows you look into a lot more and do some programming, including PATS.
Click to expand...
I'm wondering if the version I downloaded has been updated and revised compared to the one you downloaded
 
joegr said:
This is not very correct for the LS. It will normally stall if you unplug the MAF while it is running. It should run (not well) with the MAF disconnected, but you have to disconnect while the engine is off!
Click to expand...
I also tried disconnecting it while it was turned off. Started but then died immediately.
 
Got my adapter for Forscan today. Messed with it a little but going to do some more in depth this week. Also, rock auto accepted a return for the Ngk coils so I’m going to exchange them for motorcraft. We’ll see how it goes. Can I do a mode $06 and to check misfire data in my 04 LS?
 
You must log in or register to reply here.

Members online

Total: 95 (members: 1, guests: 94)
Back
Top