94 cobra question

[Cobra51807]

i got a 94 cobra it runs great but in neaturl/idle its a little rough. what can cause this it runs great in gear no misses or any thing just did new plugs and wires any ideas. any help would be very helpfuly thanks you.

 

[ProKiller]

is there any codes? is it stock? clean the maf?

 

[Cobra51807]

the check engine light isent on but i also dident hook the scanner up to it yet. yeah its stock and no i dident clean the maf yet. what do you think i should do first. and thanks for your help

 

[KamiKaziDK]

Clean the MAF up good, check your iac and tpc, and change the fuel filter

 

[Cobra51807]

also fogot to metion it some times has a throttle body back fire when cold. and ideas??? and what is the fule pressure sopose to be at on a stock fule pump? thanks

 

[Cobra51807]

i fixed the throttle body backfire it the timing was off. um its not so much that it has a rough idle it more the motor moving around a little tomuch? now it is that normal for a 94 cobra its like when your sitting at a redlight it does it the rpms dont drop or nothing its just the motor itself danceing around. Motor mount looks a little ****ty on the drive side. could that be it. thanks.:SNSign:

 

[Venom351R]

could be your mounts, how many miles are on the car?

Welcome to the 94 Cobra Family

 

[earleys94gt]

If the RPM's do not bounce around, and you can actually see the motor "moving", and you can feel a vibration...sounds like a motor mount to me

Get some new ones, and enjoy.

 

[turbogt]

my 95 does the same thing... Has a very slight stumble every few seconds at idle....

my 2000 GT DID THE SAME THING!!!! And it was a completely different motor, lows miles, mostly stock lol.. It's just something I've learned to live with and doesn't bother me.. RPM's stay the same...

 

[HISSIN50]

If it runs with a slight miss at idle, run a cylinder balance test after pulling codes. This will pick up the slightest bit of non-contribution from a given cylinder.

Good luck.

 

[Cobra51807]

thanks for every ones help i did the cylinder test and it passesd no problems there gonna try the motor mount now. and again thanks every feels great to be apart of the mustang family. thank you

 

[Cobra51807]

and my cobra has 116000 on it. i was thinking about putting the f cam in it. what do you guys think about that and thoughts or idea would be helpful thanks you. cause every one around here are chevy guys so thought id ask you guys.