question about 5th gear?

[mustangkid05]

hey everyone, it seems when i am in a higher gear then i am suppose to be and when i hit the gas it makes this rattle noise....is this normal? like when i should be in 4th and im in 5th and hit the gas it sounds like something is loose but then when it gets moving faster it goes away.....any ideas?

thanks in advance

 

[twogts4us]

detonation

 

[Stang|ess]

like marbles in a can, or a ticking?

 

[mustangkid05]

idk if it sound like ticking but deff not marbles lol........its only in higher gears....im stumped

 

[stangGT97]

my car does it at low rpms too, probably due to being in too high of a gear. It's a T-45 btw, not sure if yours is too

 

[jasonh_86]

pppiinnngggiiiiinngggg

 

[04GTMustang]

my motor sorta makes a weird sound kinda in between ping and an exhaust leak. But ive ran the motor for like 10k with this sound and it hasnt gotten worse or anything. Ive also been to the track with it like this. It doesnt getting faster with rpm it gets a little louder the harder i press the pedal. Its a sorta muffled ticking/rattling sound. Its weird it maybe an exhaust leak though cause all these rattling sounds came up when i put the xpipe on. I had an exhaust leak and got it welded and it went away and then came back like a day later.

oh and mine does it in all gears i just cant hear it in 1st cause it revs out too fast. It could be ping though man try running some 93 and see if that clears it up.

 

[hotmustang331]

Its your "chip" its putting too much timing in your part throttle map and when your at low RPM in a high gear there is ALOT of load on the motor...that brings out the detonation. Mine used to do it ONLY with the A/C on @ 40MPH or so in 5th under about 1/2 throttle.
I have a flip switch though....I confirmed mine as detonation by switching to the 87 octain mode (lower global timing) and it instantly went away mid rattle...switched back and forth with the same result. Now with Tims tune I have never "heard" the car detonate....although my plugs looked a bit speckled when I pulled them haha.

But I run the car hard....even in our 100+* weather, so im not too suprised.

 

[mustangkid05]

my car does it at low rpms too, probably due to being in too high of a gear. It's a T-45 btw, not sure if yours is too

yea mine is a t-45.......so it is a normal sound? because i don't want anything to break lol

 

[streethorse]

simple solution...... dont use 4th and 5th unless you are at high speed.
sounds like your shifting to 4th at too low of a mph, your car doesnt have
enough momentum to pull a tall gear, and yeah if you keep doing that it will
hurt your engine. we used to call it "lugging"

 

[mustangkid05]

oh alright cool thanks alot everyone.......yea i just didnt know what it is and i hope that it is just me shifting to early because i do use 5th gear alot and not on the highway lol

 

[myponyrocks]

5th gear especially with an aftermarket shifter will have a um... rattling, can of washers, odd sound. It shouldn't make the sound in any other gears though.


If the sound is coming from your engine... thats a different story. Although there is a chance you have a leak on your exhaust manifold (headers), it will make more of an airy sound though.

You can safely run at 1.5k rpms in almost every gear.... but when you go to accelerate quickly or go up hills I think its best to be above 2k.

 

[spederman]

every mustang i have had so far ( 4 total) have all done it when i'm lugging the engine. I never knew if it was pinging or something else, but i just quit shifting too early into a higher gear or downshifting if i needed some quick acceleration.

 

[mustangkid05]

ohh spederman it sounds like something rattling right?

 

[spederman]

yeah exactly like something rattling. The first few mustangs i always thought maybe it was a loose heat shield on a cat or something. But now that i know a bit more about cars, maybe it was pinging when your lugging the engine and making it work too hard. And also, none of my cars ever had tunes, they were completely factory stock.

 

[04GTMustang]

check for an exhaust leak though its a possibility. Mine may have a leak cause it is a sorta airy rattle sound. And also mine does it on the factory tune with 93 octane. Run the highest octane you can and if it still does it try and get a gallon of toluene and run that. Ive run it in my car but it still didnt change the sound. I should have been around 95 octane also. Or maybe its time for a tuneup

 

[Mustang5L5]

Either pinging, or an exhaust leak.


My GT doesn't make any weird rattles in 5thgear when i lug it.

 

[myponyrocks]

Either pinging, or an exhaust leak.


My GT doesn't make any weird rattles in 5thgear when i lug it.

You wont hear the 5th gear noise with the stock shifter usually because of all the sound deadening material.

 

[Mustang5L5]

You wont hear the 5th gear noise with the stock shifter usually because of all the sound deadening material.

MGW shifter here

 

[myponyrocks]

MGW shifter here

Same, but I've had the same noise since 5k miles when I put my UPR on, and it got LOUDER with the MGW install.

I'm assuming you reused the dampening material, I didn't as it was thrown out during the UPR install.