1999 GT 5spd 35k miles

tried a new gas station for half a tank the other day, upon next startup service engine soon light came on, stayed on all day today. i doubt it to be anything serious... but i figured id check here. the car felt a little sluggish this monring but seems to be doing better now, i filled it back up with my regular gas. Im thinking it could just be a bad tank of gas.. my gas cap was shut properly..

any other ideas as to what it could be?

 

I've heard that service engine soon lights pull timing!!!???

 

What octane are you running? And are you sure you put in "regular" gas and not that E-85 crap?

 

it was a "regular" 92 octane im pretty sure. whatever hess' premium is. im hoping it goes up after a few more startups

 

Btw, the light stays on solid, not blinking.

do i have anything to worry about?

 

Take it to autozone and have them check it for you. Its free.

 

when you gat it warm lay on the gas a till you get around 3 1/2 g's
and if it starts to skip then you have something serious to worry about

 

drove it for a couple hours today, got on it a few times to make sure everything felt ok.
didnt have any skipping at all... so hopefully its alright

 

That could be your problem... unless your car is tuned for premium, Ford has tuned these cars to run on 87! Here is the word for word from the owners manual...

"Your vehicle is designed to use"regular" unleaded gasoline with an (R=M)/2 octane rating of 87. We do not recomend the use of gasolines labeld as "regular" that are sold with octane ratings of 86 or lower in high altitude areas."

"Premium unleaded gasoline is not recomended because it may cause these problems to become more pronounced"(starting, rough idle or hesitation driveability problems during cold start)

"It should not be necessary to add any aftermarket products to your fuel tank if you continue to use high quallity fuel of the recommended octane rating. Aftermarket products could cause damage to the fuel system."

That could be it... or ya just got some bad gas! Ever replaced your fuel filter?

 

my ses light is on because my jlt rai came off the tb[&:], tightened it back up but the light hasnt come off. maybe i will unhook the batery for a few hours.