Q: Hey I have a 2000 Buck Lesabre and I'm having some fuel issues I think

asked by on

A few days ago I was heading over to my buddy's house and got there with no problem but when i put it in park the rpms dropped and the car stalled. i could get it running again but only if i kept the rpms above 3000, as soon as i let off it would sputter and stall again. I've checked the battery and alternator and the battery was discharged so i brought it to work to charge it. After that i went back and it started right up so i drove it to autozone and couldn't get it started again. I found a small fuel leak and fixed that. I waited a couple days and it started right up again, but then i shut it down and went back to work for another hour, then came back and it didnt want to start, so i gave it a bootful of gas and it fired up under protest but was running like shit.

My car has 155000 miles.
My car has an automatic transmission.

Fuel is a possibility but so is air induction particularly the idle air control (IAC) valve. The IAC valve may be sticking which would explain the first symptom you report which is everything was great until you simply put it in park and at idle it died. It would be good to address the battery/charging system issue so as not to complicate the diagnostic. That is be sure the battery passes a load test and that the charging system output is within factory limits, typically around 14.5 volts. If all checks out OK with the air induction system, including sensors and controls, of which the IAC is just one component, and yet the car continues to stall, check fuel system pressure. You could have a failing fuel pump, pressure regular, clogged fuel filters or plugged injectors. If, at any point, you want a certified mechanic to resolve this, please simply request a stalling diagnostic and the certified mechanic will come right to your location, find the root cause and estimate the repair.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Hey I have a 2000 Buck Lesabre and I'm having some fuel issues I think

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Gas tank continually cuts off at the gas pump

The fuel level sensor problem (prematurely worn contacts) is, unfortunately, a known and chronic problem with this model. Running out of gas in traffic is definitely a safety issue. I believe this repair is essential. A professional mechanic, like YourMechanic,...

Q: Car crawls when first put in drive. When I stop at a stop sign the engine cuts off. 2001 Buick Park Avenue

This is a transmission internal problem most likely by solenoids sticking or the clutches are worn out. Have the transmission pressures tested to diagnose the transmission problem to see if solenoids work properly and if pressures are good. if they...

Q: While driving my car will shut off if you start it again it will act like it's flooded for about 10 minutes then will start?

You should get the fuel pressure checked and the computer scanned. If running too rich then your fuel pressure may be too high or you have a leaking injector. A computer test will tell you if you have a sensor...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.