So, recently my Cavi has started a new trick where after it has been driven for about 20-30 minutes, and after sitting at a stop for a minute, the car will stumble/hesitate/etc when you hit the gas.  But, it'd go after a second.  But, today it died at a stop light when I hit the gas.  Car had been running for 20 mins at this point.  I then drove the car on the highway for an hour and a half.  When I got off the highway and to the house(and around the Walmart parking lot), the car did great without hesitating.  Little background on the car, its a 1997 2.2 with 277k miles.  Oil has 1k miles on it (I had a shop do it and I think they used 5w30, car doesn't seem to like it that much), spark plugs have maybe 500 on them (used NGKs).  It is still getting 27-30 MPG and idles great.  Just stumbles when you hit the gas.  
2000 Ford F-250 7.3 Powerstroke 4x4 - Not stock
1973 16' Tahiti Speedboat
1983 200 HP Mercury BlackMax
1997 Chevy Cavalier with 275K miles
 
the first thing i would change is the fuel filter it may just not be getting enough fuel next it could be the fuel pump going also. i would try getting new ones a fuel pump runs around 80 bucks and a filter runs about 10 to 15 dollars so try the filter first cheap and easy fix.
 
lol, 249.99 for a pump, but for 289.99 you get the tank, fuel pump, and straps.
I would do the 289.99 and sell the extras.
- Your not-so-local, untrained, uncertified, backyard mechanic. But my @!#$ runs
 
Ya I would be monitoring vaccum, fuel and spark while driving.
 
 
I think it might be an electrical issue?  Who knows.  I just took the car on a 500 mile road trip, it ran perfect. 
2000 Ford F-250 7.3 Powerstroke 4x4 - Not stock
1973 16' Tahiti Speedboat
1983 200 HP Mercury BlackMax
1997 Chevy Cavalier with 275K miles
 
John Lenko wrote:TPS sensor.
That's what I was thinking.  It's fairly new, but I think it has a lifetime warranty on it.  Gotta find that receipt. 
2000 Ford F-250 7.3 Powerstroke 4x4 - Not stock
1973 16' Tahiti Speedboat
1983 200 HP Mercury BlackMax
1997 Chevy Cavalier with 275K miles
 
 
MAP sensor and TPS sensor would be the first things I checked with those symptoms.
 
 
Mr. Quick wrote:MAP sensor and TPS sensor would be the first things I checked with those symptoms.
Great news is that this car doesn't have a MAP sensor, so that kinda narrows it down... 
I'm wondering if the car just wasn't burning oil and loading up at idle?  I changed the oil yesterday, and it seems the shop that did it before me (I had a coupon, not doing that again) put in 4.5-5 quarts.  I definitely noticed the burning oil smell at idle, but just attributed it to having 279K miles...  
2000 Ford F-250 7.3 Powerstroke 4x4 - Not stock
1973 16' Tahiti Speedboat
1983 200 HP Mercury BlackMax
1997 Chevy Cavalier with 275K miles
 
 
Oedwards wrote:lol, 249.99 for a pump, but for 289.99 you get the tank, fuel pump, and straps.
I would do the 289.99 and sell the extras.
Or since he has a '97 he can grab a Blazer fuel pump...
http://www.j-body.org/faq//27/