Car Hesitates under WOT

[97GTSTANG]

Under WOT, my car hesitates, like its trying to gasp for air, then i can smell coolant from the vents. I have the upgraded intake so please dont tell me my intake has a crack, the heater core was replaced a few months ago. Any suggetsions on what it could be?

 

[lvmustanggt]

Tune. Happen to me before. Get a new tune and change spark plugs

 

[hotmustang331]

^ I didnt know a tune had anything to do with a coolant smell coming from the A/C vents LOL.

I think there are more serious issues going on. Are you loosing any coolant?

 

[97GTSTANG]

I am not loosing any coolant, no check engine light, just a faint smell of coolant. Under WOT it feels like the car is gasping for air and it causes hesitation. mostly over 3K RPM, under that its fine.

 

[03ghoststang]

for the hestitation check your plugs.....as for the coolant smell just recheck everything and make sure you dont have a minor leak

 

[97GTSTANG]

thanks for the advice, i am getting the plugs changed to 764's tomorrow, i will have the intake checked for leakage. I was just thinking that maybe when the heatercore went back a few months ago some of the coolant went inside the plug area and is still there. so i will have it all cleaned out and see how that goes

 

[LI98GTStang]

I see you have the Steeda T/A. I thought there were issues with the 99+ (PI motors) having drivability issues with it set too far advanced? It used to be posted on Steeda's web site under the T/A - maybe under the install instructions? Worth checking into IMO.


Found it. Here it is...
"Naturally Aspirated (no Supercharger or Nitrous) GT or Cobra: 14° to 16°
Note: 1999 GT's may experience some "bucking" during part-throttle operation if the timing is advanced above 13°. This will not affect full throttle performance. "

http://www.steeda.com/instructions/timing_adjuster.htm

 

[97GTSTANG]

I have had it for years, the bucking and studdering just started about a month ago. the TA is set at 11 degrees. I will read the article though. thanks