Need help!!!

Mando95 · October 4th, 2009, 05:50 PM

the problem is when my car is cold and i crank it up and begin to go it stumbles, but once it warms up and ive been driving for about 3 mile it goes away and works fine and it wont do it again until the car is compety cooled down and suggestion? it just started doin it

ReverendDexter · October 4th, 2009, 06:08 PM

How long do you let your car warm up before you drive it?

Mando95 · October 4th, 2009, 06:17 PM

well usauly i just crank it up for about a minute then take off whats funny is itll rev up fine just when its under load is when it does it

2002BLGT · October 4th, 2009, 08:18 PM

Originally Posted by Mando95

well usauly i just crank it up for about a minute then take off whats funny is itll rev up fine just when its under load is when it does it

Whats done to the car ? Check engine light come on ? aftermarket MAF ? gives us more info on the car , how many miles on it ?

Mando95 · October 4th, 2009, 08:45 PM

yes the light is on the ony thing done is cobra intake, o/r hpipe bbk headers and flowmaster the car has 120,000 on it

Bullitt95 · October 5th, 2009, 07:42 AM

Cold start driveability problems are often caused by either a faulty ACT (air charge temp.) or ECT (engine coolant temp.) sensor. You can test these sensors by going to:

Ford Fuel Injection » Air Charge Temperature (ACT)
Ford Fuel Injection » Engine Coolant Temperature Sensor (ECT)

Trick Tuners · October 5th, 2009, 09:40 AM

clean the maf. On cold starts the car will run off the maf until the o2 sensors get hot and take over. Rule out vacuum leaks too.

Mando95 · October 5th, 2009, 10:04 AM

i was planning on doing that today. Ill let you know if it fixes it

WildWill · October 5th, 2009, 03:54 PM

You need to let your car warm up for a good solid minute or two before you drive it. Don't just get in and go... These aren't new cars man...

Mando95 · October 5th, 2009, 06:43 PM

Yeah i know but it just started doin this. But your right it not a new car

Mando95 · October 6th, 2009, 06:48 PM

Finally its running right it was the coolent temp sensor replaced it and worked fine

October 4th, 2009, 05:50 PM	#1
Mando95 Regular 95 mustang gt Join Date: Sep 2009 Location: Camp Lejeune, NC Posts: 73 iTrader: 0 reviews	Need help!!! the problem is when my car is cold and i crank it up and begin to go it stumbles, but once it warms up and ive been driving for about 3 mile it goes away and works fine and it wont do it again until the car is compety cooled down and suggestion? it just started doin it __________________

October 4th, 2009, 06:08 PM	#2
ReverendDexter Priest of the Car Gods Clapped-out '90 GT 'vert ~5.5 seconds off TTOD :( Join Date: Jan 2007 Location: Rohnert Park, CA Posts: 13,808 iTrader: 0 reviews	How long do you let your car warm up before you drive it? __________________ O o /¯/______________________ \|BLAAAAAAAAAAAAAAAAAAAAAAAAARGH!!! \_\

October 4th, 2009, 06:17 PM	#3
Mando95 Regular 95 mustang gt Join Date: Sep 2009 Location: Camp Lejeune, NC Posts: 73 iTrader: 0 reviews	well usauly i just crank it up for about a minute then take off whats funny is itll rev up fine just when its under load is when it does it __________________

October 4th, 2009, 08:45 PM	#5
Mando95 Regular 95 mustang gt Join Date: Sep 2009 Location: Camp Lejeune, NC Posts: 73 iTrader: 0 reviews	yes the light is on the ony thing done is cobra intake, o/r hpipe bbk headers and flowmaster the car has 120,000 on it __________________

October 5th, 2009, 07:42 AM	#6
Bullitt95 Hardcore Enthusiast 1995 Mustang GT auto 13.546 @ 105.32 Join Date: Apr 2007 Location: Al Ain, UAE Posts: 1,452 iTrader: 0 reviews	Cold start driveability problems are often caused by either a faulty ACT (air charge temp.) or ECT (engine coolant temp.) sensor. You can test these sensors by going to: Ford Fuel Injection » Air Charge Temperature (ACT) Ford Fuel Injection » Engine Coolant Temperature Sensor (ECT) __________________ 243.5rwhp/284.2rwtq Mod list in My Garage

October 5th, 2009, 09:40 AM	#7
Trick Tuners MM Fanatic KB'd GT Join Date: Nov 2006 Location: San Diego Posts: 4,467 iTrader: 3 reviews	clean the maf. On cold starts the car will run off the maf until the o2 sensors get hot and take over. Rule out vacuum leaks too. __________________ Check out my forums for stuff on troubleshooting, tuning, etc We teamed up with Socal Performance Racing to bring dyno tuning to San Diego. Be friends with us on FB

October 5th, 2009, 10:04 AM	#8
Mando95 Regular 95 mustang gt Join Date: Sep 2009 Location: Camp Lejeune, NC Posts: 73 iTrader: 0 reviews	i was planning on doing that today. Ill let you know if it fixes it __________________

October 5th, 2009, 03:54 PM	#9
WildWill Hardcore Enthusiast 1995 Mustang GT Join Date: Oct 2007 Location: Solomons, MD Posts: 1,112 iTrader: 0 reviews	You need to let your car warm up for a good solid minute or two before you drive it. Don't just get in and go... These aren't new cars man... __________________ GT40p heads, 1.7 crane RR's, GT40 u/l, MAC LTs, MAC o/r h-pipe, Flowmaster 40s, 65mm t/b, '03 Cobra Bilstein Struts, Tokico Bullitt Shocks, MM c/c plates, Eibach Sportlines, B&M shifter, 255lph f/p, RAM p/g clutch, Fidanza alum fly, rebuilt t-5

October 5th, 2009, 06:43 PM	#10
Mando95 Regular 95 mustang gt Join Date: Sep 2009 Location: Camp Lejeune, NC Posts: 73 iTrader: 0 reviews	Yeah i know but it just started doin this. But your right it not a new car __________________

October 6th, 2009, 06:48 PM	#11
Mando95 Regular 95 mustang gt Join Date: Sep 2009 Location: Camp Lejeune, NC Posts: 73 iTrader: 0 reviews	Finally its running right it was the coolent temp sensor replaced it and worked fine __________________

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