Help me create the "Surging Idle Checklist"

[jrichker]

Quick question
In the first page it says you should get a code 11 when dumping codes. Is that all the time, or only if there are no codes present? I get code 34 but no code 11. Thanks in advance.

Code 11 means that there are no other codes present and everything checks out OK.

 

[Wisstang]

It looks like this isn't frequented as much anymore but I'm having some issues.

I have a 95 mustang h/c/I. SCT BA2600 calibrated for accel 36lb injectors. 340lph fuel pump and adjustable fuel pressure regulator.

All these parts are new as of 200 miles ago. My car has developed an issue stalling when turning at low speeds or if turning hard and not moving but with the clutch in and no gas. This seems to happen hot or cold. The RPMs will just drop instantly and the car shuts off. Sometimes pressing the gas while it happens can save it. IAC has been replaced with no luck. Each time it stalls it seems to correlate with turning. It is worth with AC on. At idle turning the wheel hard does drop the RPM.

Hoping for any input on what could possibly cause this behavior.

 

[Dan02gt]

It looks like this isn't frequented as much anymore but I'm having some issues.

I have a 95 mustang h/c/I. SCT BA2600 calibrated for accel 36lb injectors. 340lph fuel pump and adjustable fuel pressure regulator.

All these parts are new as of 200 miles ago. My car has developed an issue stalling when turning at low speeds or if turning hard and not moving but with the clutch in and no gas. This seems to happen hot or cold. The RPMs will just drop instantly and the car shuts off. Sometimes pressing the gas while it happens can save it. IAC has been replaced with no luck. Each time it stalls it seems to correlate with turning. It is worth with AC on. At idle turning the wheel hard does drop the RPM.

Hoping for any input on what could possibly cause this behavior.

It’s doing it because your anti-stall strategy is not able to compensate for the mods you made and the additional load on the engine to turn the power steering pump when it’s loaded is causing your stalling.

Follow the guide to make sure your timing is set and you have not vacuum leaks. Check your base idle. You might have to raise it some to clear out the issues. Ultimately you might have to get a tune.

Do you have a blower or plan on getting one? Is your engine a 347?
If it’s a 302 I would loose that fuel pump, the 36lb injectors, and that mass air meter. Is all way to big for a H/C/I 302. Your car will run better with smaller parts.

 

[Wisstang]

It’s doing it because your anti-stall strategy is not able to compensate for the mods you made and the additional load on the engine to turn the power steering pump when it’s loaded is causing your stalling.

Follow the guide to make sure your timing is set and you have not vacuum leaks. Check your base idle. You might have to raise it some to clear out the issues. Ultimately you might have to get a tune.

Do you have a blower or plan on getting one? Is your engine a 347?
If it’s a 302 I would loose that fuel pump, the 36lb injectors, and that mass air meter. Is all way to big for a H/C/I 302. Your car will run better with smaller parts.

I should have noted the car currently has a tune from ted jenkins from tuning innovations.

Idle is around 8-900.

I do have plans for a supercharger in the future which is why the shop sized it a bit large.

I had a tune previously from a local shop that also had this issue. It is possible that both are missing something.

Most of the mileage I had no issues and then it recently popped up.

I also got notes from the 94/95 to check if I see the same issue wheels off the ground and if I'm hitting any wires with the steering column. I will see if I can get a test done for a vacuum leak as well.

 

[Dan02gt]

I should have noted the car currently has a tune from ted jenkins from tuning innovations.

Idle is around 8-900.

I do have plans for a supercharger in the future which is why the shop sized it a bit large.

I had a tune previously from a local shop that also had this issue. It is possible that both are missing something.

Most of the mileage I had no issues and then it recently popped up.

I also got notes from the 94/95 to check if I see the same issue wheels off the ground and if I'm hitting any wires with the steering column. I will see if I can get a test done for a vacuum leak as well.

Ok then the tune probably needs some tweaking. Check out this YouTube link for a very good explanation of what’s going on.
View: https://youtu.be/TNeZDSsDh-o

 

[nepats1973]

Been through this entire checklist several times. Still, car starts and immediately stalls.