cold start

J

jghood13

New Member

Oct 2, 2003

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NY

Nov 5, 2004

#1

• Nov 5, 2004

• #1

when I go to start the car after it has been sitting over night it has to crank for a while before it starts and when it starts there is an idel surge and when I stand on it down the road the car breaks up and back fires the power is still there though and when it warms up every thing is fine.
What could cause this?

 

HISSIN50

"How long does it take to get help in here?

15 Year Member

Nov 29, 1999

31,179

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129

Nov 6, 2004

#2

• Nov 6, 2004

• #2

have you pulled codes? before you start it, turn the key on and off a few times to cycle the fuel pump (builds pressure if the pump is weak). helps with diagnosis.

good luck.

 

J

jghood13

New Member

Oct 2, 2003

160

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NY

Nov 6, 2004

#3

• Nov 6, 2004

• #3

the only light i am getting is a low coollant there is no check engine

 

J

jghood13

New Member

Oct 2, 2003

160

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0

NY

Nov 6, 2004

#4

• Nov 6, 2004

• #4

I was reading old posts and some one talked about and ect engine collent temp sensor or something that would cause the car to run rich and funny when its cold
what is or where is the ect

 

S/CBlack95GT

New Member

Apr 6, 2003

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Tampa Palms, FL

Nov 6, 2004

#5

• Nov 6, 2004

• #5

During starting I had surging and a poor idle when it was real cold (< 30 degrees). This was with my old 24 lb injectors. Since the blower install with the 30 pounders I have never had a problem.

PS: this all took place back in IL, where it actually gets below 50.

 

HISSIN50

"How long does it take to get help in here?

15 Year Member

Nov 29, 1999

31,179

33

129

Nov 6, 2004

#6

• Nov 6, 2004

• #6

ECT (Engine Coolant Temp sensor). it tells the puter how warm the coolant (motor) is and i think for you guys, it also is used to activate the cooling fan.

that is true that a bad ECT or ACT can cause problems (i.e. it tells the puter the car is warm when it is cold; the mixture will be too lean). and the thing is that the sensor can just be out of calibration - it will not toss a code as it is within absolute specs. it is just wrong for the situation.
what is your vacuum like? leaks sometimes make for cruddy start up operation, while smoothing out once warm.
good luck.

 

mo_dingo

20+ Year Stangneter

Aug 26, 2003

3,031

2

58

Tucson, AZ

Nov 6, 2004

#7

• Nov 6, 2004

• #7

Start with cleaning your MAF. It's cheap & a common problem.

When the car is warm, put the pedal to the floor (has to be all the way to the floor to test wide open throttle). What happens? Does it hesitate?
Scott

 

J

jghood13

New Member

Oct 2, 2003

160

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NY

Nov 7, 2004

#8

• Nov 7, 2004

• #8

no it just goes

 

J

jghood13

New Member

Oct 2, 2003

160

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NY

Nov 9, 2004

#9

• Nov 9, 2004

• #9

I cleaned the mass air car still backfires well cold if I get on it but other then that it has some idle issues