tspina94

i have a 1998 v6 mustang 5speed with a single mod (intake) all els stock.
when i first start up car it doesnt receive enough gas that i give it and it causes it to buck and shake almost to the point of stalling at first gear, after 10-15 mins of driving its fine and it respawns normally.
i have no idea whats wrong with it, its almost like it take really long to warm up but to the point of stalling is extreme and not normal . need help please !!!

Maverick710

Ok do you have a check engine light on?

tspina94

No I don't, no dummy lights or anything. It has about 113,000 on it. When I first start my car though the temperature stays on cold for like 15 mins then makes its way to normal in the middle slowly, I don't know if that's just normal though.

Daehawk

Kinda normal. Mine takes about 5 min to start moving. Maybe a little longer.

tspina94

Well I understand the car needs to warm up but 15 mins is long, and I live in FL so it's already not cold here haha, I don't know if there's anyway to improve this, maybe new spark plugs or mass air flow or something.

Maverick710

Another question is, how long has it been since youve changed the fuel filter? And if hasn't been to long how much pressure are u getting from the fuel pump?

petrock

Unless its over 100 degrees on a daily basis, it will still take some time for the car to warm up. Warmed up is the motor temp at around 180-190 degrees (depending on your thermostat).

I would also test your IAC valve (idle air control valve). Search the forum there are a lot of post with similar symptoms. Good luck..

tspina94

That I don't know, I never asked the previous owner of the car, but I'm willing to change it always.
And okay thank you, I'll look into testing it, appreciate the feed back.

MaxOrbit

Going out on a limb here but I'd suspect a faulty coolant temp sensor. It should tell the ECU that your motor is cold and enrich the mixture like an old time choke. I have no idea where this sensor is located.

tspina94

Okay that's sounds what it can likely be acutely, I think I may have a idea but I'll research to find it, thanks!