HELP - acceleration problem

jward076 · 08-07-2006, 10:24 AM

This is my first time on the site and I an hoping that you guys can help me. I have a '98 GT that is all stock. I cannot accelerate if it is hot outside and if I have been driving for a while. My commute is 40 miles one way, which takes about 1 hr time. Going to work in the morning I have no problems. However I have isses getting home. I am unable to accelerate hard and cannot punch it. I have to slowly increase my speed, but sometimes that does not work. After a while I must turn off the car and then start it again to continue on. Sometimes I must do this even on the highway. I have had a diagnostic check several times and was only told to change my O2 sensor and fuel filter. I noticed little difference after the sensor was replaced. However the car ran wonderful for 2 days after changing the filter, but then went back to the old ways. Also, the car usually acts up when I have less than a half of tank of gas. Sometimes I just stop and fill up to stop the problem.

Someone please help, there must be a better solution!!!

2k4mk1 · 08-07-2006, 11:49 AM

Ck the fuel pressure coould be a fuel pump issue

**AdRock** · 08-07-2006, 02:55 PM

I would have to agree. If having over 1/2 tank stops the problem then I would look at the pump or the pickup. It sounds like it could be that the pump is heating up and not pumping the fuel that the car needs.

05GtDude · 08-07-2006, 06:59 PM

check fuel pump,...also could be your throttle body going out? I just had to replace mine,..and the problem i was having was,..when i went to accelerate i had to go slow,..otherwise my engine would bog down,..and after driving a while it felt like i had a loss of power, and then my engine would bog down again.

**bighoss88lx** · 08-07-2006, 08:34 PM

Fuel pump......

chrono89 · 08-20-2006, 09:22 PM

Could it possibly be crap in the tank that's accumulating on the filter? If not then my next guess is everyone else's, fuel pump, hehe.

08-07-2006, 10:24 AM	#1
jward076 '98 GT Join Date: Aug 2006 Location: Ft Worth, TX Posts: 1 Trader Rating: (0)	HELP - acceleration problem This is my first time on the site and I an hoping that you guys can help me. I have a '98 GT that is all stock. I cannot accelerate if it is hot outside and if I have been driving for a while. My commute is 40 miles one way, which takes about 1 hr time. Going to work in the morning I have no problems. However I have isses getting home. I am unable to accelerate hard and cannot punch it. I have to slowly increase my speed, but sometimes that does not work. After a while I must turn off the car and then start it again to continue on. Sometimes I must do this even on the highway. I have had a diagnostic check several times and was only told to change my O2 sensor and fuel filter. I noticed little difference after the sensor was replaced. However the car ran wonderful for 2 days after changing the filter, but then went back to the old ways. Also, the car usually acts up when I have less than a half of tank of gas. Sometimes I just stop and fill up to stop the problem. Someone please help, there must be a better solution!!!

08-07-2006, 11:49 AM	#2
2k4mk1 DONT HATE ME CUZ YOU AINT ME!!!! Join Date: Dec 2003 Location: SanAntonio Posts: 6,364 Trader Rating: (2)	Ck the fuel pressure coould be a fuel pump issue __________________ 04 Oxford White MACH1,5 SPD with IUP,K&NAircharger Borla Stingers,SLP Catted X pipe,Tri-ax,SCT Flashtune,Max Mtr Spt 4 bolt adj C/C plates, Drilled/Slotted rotors all 4 corners 281 rwhp on Mustang Dyno,306 rwhp on a Dynojet 94 Black Lightning Daily Driver&85GT FACH1 Project under construction

08-07-2006, 02:55 PM	#3
AdRock If you hate me, then read my sig Join Date: Nov 2003 Location: On The Move Posts: 5,399 Trader Rating: (5)	I would have to agree. If having over 1/2 tank stops the problem then I would look at the pump or the pickup. It sounds like it could be that the pump is heating up and not pumping the fuel that the car needs. __________________ '02 Stang GT Just cause you don't understand what's going on ...don't mean it don't make no sense And just cause you don't like it,...don't mean it aint no good And let me tell you something Before you go taking a walk in my world,...you better take a look at the real world Cause this aint no Mr. Rogers Neighborhood Can you say "feel like shit?"Yea maybe sometimes I do feel like shit I aint happy about it, but I'd rather feel like shit than be full of shit! And if I offended you, Oh I'm sorry, But, maybe you need to be offended But here's my apology and one more thing........Fuck you! Cause you can't bring me down

08-07-2006, 08:34 PM	#5
bighoss88lx Killing is my Business...And Business is Good! Join Date: Aug 2003 Location: Elmendorf, Tejas Posts: 5,959 Trader Rating: (1)	Fuel pump...... __________________ 1988 Mustang LX

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08-07-2006, 06:59 PM	#4
05GtDude Registered User Join Date: Apr 2005 Location: Nederland Posts: 103 Trader Rating: (0)	check fuel pump,...also could be your throttle body going out? I just had to replace mine,..and the problem i was having was,..when i went to accelerate i had to go slow,..otherwise my engine would bog down,..and after driving a while it felt like i had a loss of power, and then my engine would bog down again.

08-20-2006, 09:22 PM	#6
chrono89 Registered User Join Date: Nov 2005 Location: Schertz, TX Posts: 10 Trader Rating: (0)	Could it possibly be crap in the tank that's accumulating on the filter? If not then my next guess is everyone else's, fuel pump, hehe.