Mustang mspnp2, msd 6al2, no start- but fires

[hybrid]

All a recovery system really needs is a hose going into a bottle. The coolant level in the bottle should be high enough that the hose is submerged so that when required, coolant can be sucked back into the radiator rather than air.

[tonawawa]

Why is my idle so high?
I mean its screaming fast! I am using valve mode normal, 0%= off. also closed loop.
I cant see why the engine revs so high!

[slow_hemi6]

Is 0% off? have you confirmed this. Ford valves I have seen have the valve visibly open when no power is applied.

[jsmcortina]

Start with Open Loop control until it works as expected.

James

[rickb794]

Cut a square out of an aluminum can just narrow enough to pass between the IAC mounting bolts and long enough to span the width of the valve.
Loosen the IAC mounting bolts and slip the aluminum into the gap, then snug down the IAC bolts.
This will seal off the IAC and eliminate it as a possible source of idle air.
Once you get the rest of your tune figured out then you can unblock it and work on that.

Your first concern should be the air bubble around the CLT, this is No Bueno.
There should be no air in your cooling system AT ALL.
If your car has a heater you can tee the sender into the hot side hose.
Another option would be to drill & tap a hole next to the factory temp sender.
You must eliminate and prevent air from entering the cooling system this is vital to the life of your motor.
The radiator cap should be the highest point in the cooling system, and no upward loops that can trap air.

I also recommend you stop trying to use someone elses MSQ, this always seems to introduce some malfunction from which you don't learn anything.
YOU need to understand what the settings do and verify they are correct in YOUR msq. (Open a new project and start with the Default MSQ)
With MegaSquirt YOU are the tuner, shooting into the dark will not get you anywhere and may hurt your motor.
Read the manual, not the whole manual, just the sections that apply to your install.
Read it in a quiet place with no distractions, read it over and over until you can wrap your head around what is going on.
Then fire up Tuner Studio and find the settings specified in the manual. If you are not sure of something click on the question mark.
Make sure all your mechanical issues are straightened out before attempting to tune.
Verify fuel pressure and injector size, for the ReqFuel calculation.
Google the number on the injectors to verify size.
Make sure the injectors are not too big or too small for your application. If your motor is not boosted stock injectors should be fine.
800hp injectors are not good for a 400hp application you are going to have low speed tuning problems.
Low impedance injectors are not necessary and probably best avoided for anything but an exotic application.
My point is a MS will not fix a poor or mismatched choice of parts, you cant tune around these types of problems.
And you will hurt your head banging up against them.

Leave O2 correction turned off until you get a good tune, then adjust your AFR table accordingly before enabling O2 correction.
Make all changes to the VE table when the motor is HOT (Thermostat must have opened)
Leave the trims alone until you get a fairly good VE table dialed in.
WUE AE cranking fuel and others are just trims and will be affected by changes to the VE table.
Changing them early on may affect tuning and make you go back and reset other changes.
You only get one or two chances at a cold start per day, and when winter comes you will find more work needs to be done there.
Take your time and work on one area at a time. Don't try to make wholesale changes.
Make one change and live with it a while to see how it affects the motor.
You can't fire up TS and waive your hands over the keyboard and have a tune done in 2hrs.
A good tune takes time and evolves as you learn how the system works and what the motor wants.

All the above writing is wasted if you don't have a wideband O2 sensor.

[tonawawa]

I do have a wideband o2 sensor. I think my fan sensor was not working because I was using an adapter which set it above the manifold a little too high. I have since put it in my upper radiator hose and it has been working fine now. I have my IAC disconnected, It would not work correctly. I have to use a little throttle until it warms up without it, idles a little high when warm, about 1200 rpms. I have been reading Ford has made several different variations of their IAC.
I need to spend money on the rear axle now, I need 4.10 gears!

[Matt Cramer]

Why is my idle so high?
I mean its screaming fast! I am using valve mode normal, 0%= off.

That is backwards for an MSPNP. On an MSPNP, set the valve mode to inverted.

[tonawawa]

Should I turn on:(incorporate AFR)?
Thank you.

[Matt Cramer]

The Incorporate AFR setting is a matter of preference. I generally prefer it, but if you have tuned out your VE table without it you would need to retune it.

[tonawawa]

---That is backwards for an MSPNP. On an MSPNP, set the valve mode to inverted.---
I have the valve mode set to inverted 100% off.
So the smaller the number = closer to off?
That is how it has been working for me, 0 seems to be off.
The phrasing is a little confusing, or opposite.
Thank you, Chris

[Matt Cramer]

Inverted tells the software to invert the signal - if properly set, the duty cycle you see in TunerStudio is always what percentage to open the valve, with zero being "do not pulse the valve open at all."

[tonawawa]

Thanks Matt.
It seems to be working now, and good!
My mustang wants to start on the 3rd try though. Is that because the cylinders are priming? Are there any settings to improve this?

[Matt Cramer]

Could be a lot of things - please post an MSQ and a data log of an attempted start.

[tonawawa]

Update, and question.
I have been drag racing my Foxbody 363 with the MSPNP2. I have been running mid 12s in the quarter mile. It seems I have no top end power, it sputters or cuts out around 6400 rpms. My rev limiter in MS is set at 7200.
Could I be running out of fuel? I only had one Walbro 255 pump running, I will now try both in tank Walbro 255s running. Track is closed now until next time.

[krisr]

Assuming you are logging each pass (hopefully you are!).

[tonawawa]

I hit start to log a pass, but idk how to retrieve it.

[hybrid]

Have a look in this directory:
My Documents\TunerStudioProjects\<your project>\DataLogs

You would know if it's running out of fuel as it will be going lean and increasing values in your VE table won't make any difference.

[tonawawa]

I don't think it is going lean, in auto tune the MS has been lessening the values on the fuel table.

[hybrid]

I don't think it is going lean, in auto tune the MS has been lessening the values on the fuel table.

Ok, well you're only guessing until you see the log.
Download MegaLogViewer if you haven't already. That's what you'll use to inspect the logs.

[tonawawa]

ok got it, I data logged my idle and some throttle and was able to view it. I did find a vacuum leak at a uncapped tee at the back of the manifold. I don't think this would affect WOT, and now I must redo my start up values.