lowest operating RPM's for GT

[SirJAG]

quick question:

What are the lowest cruseing RPM's you guys run at in your mustangs?

i hear a wierd rattleing sound around 1100-1500rmps in 2nd and 3rd...is that noise i hear called pinging? and how harmful is it?

i generally keep the rpms between 2-3K in all gears, unless i am getting on it, then its around 6500 obviously.

thanks for your time,
JAG

 

[chao5.0]

cruising I try to keep it around 1800-2k as long as I'm around the speed limit, but on the highway at 70+ its usually turning over 2k because of the 3.55 gears.

 

[Rct851]

2k plus unless cruising in sixth. 3.31 gear so if in cruising anything lower than that and need to maneuver or pass the car can't get out of its own way

let's just say if the speed limit is between gears for cruising then I'm going to gear down and keep my rpms. Sounds better anyway

 

[SirJAG]

word up guys, thanks.

and the rattleing noise around 1100 rpm?

 

[dirtyd88]

Do you have an off-road midpipe? Mine used to rattle/verberate around that same RPM like it was a loose clamp or something.

 

[SirJAG]

just cut out the resonators, and gt500 mufflers.

i was pretty sure all these motors made this noise at very low rpm, hell i though all engines did it...i wonder now...

 

[5lho]

just cut out the resonators, and gt500 mufflers.

i was pretty sure all these motors made this noise at very low rpm, hell i though all engines did it...i wonder now...

You are definitely lugging the shit out of it at 1100 rpm. the noise is probably coming from the manual trans because there's too little load on the gears.

 

[SirJAG]

I'm never driving at that rpm it's just happened a couple of times by accident and I was curious as to that noise

thank you

 

[92fiveohfox]

My auto drops to 1100 rpms all the time.

 

[04SNK390HP]

My auto drops to 1100 rpms all the time.

Your auto also has a TC to take up some of that low RPM stress that would be present in a manual trans.

-Nick

 

[MRSUPRA]

Are we talking about valve spring noise?

 

[chao5.0]

more than likely the noise you are hearing at 1100 is from the drivetrain from lugging the engine, it'll happen to me every once in a while when taking off and I'm not really giving it enough throttle to pull through the low rpms fast enough.

 

[Blazer707@TBR]

I have a rattle noise at low rpms but it is only because of the mcleod rxt. The thing rattles horribly at around 1800 rpms.

 

[greenscobie86]

Happens in my car all the time, especially in traffic or rolling through a slow moving intersection.... Every manual car will make a similar noise when the engine is lugged at too low of an RPM, as long as you dont romp on it at like 1000RPM and let it come up naturally you'll be fine.

 

[FordService]

quick question:

What are the lowest cruising RPM's you guys run at in your mustangs?

i hear a weird rattling sound around 1100-1500rmps in 2nd and 3rd...is that noise i hear called pinging? and how harmful is it?

i generally keep the rpms between 2-3K in all gears, unless i am getting on it, then its around 6500 obviously.

thanks for your time,
JAG

Hello SirJAG,

I recommend you bring it in get it checked out at your dealer and speak to your service manager about this. He is in the best position to ensure a proper diagnosis, and will be able to provide available options and/or coverage for any work needed.

You can schedule an appointment online here. Let me know the outcome.

Deysha