2004 Buick LeSabre Runs silent until 2,000 rpm or so then sounds like a diesel and has no power.


Asked by Jan 03, 2015 at 04:11 PM about the 2004 Buick LeSabre Custom

Question type: Maintenance & Repair

Car starts and runs silent.. Car runs fine until the rpms reach 2000 or above. after that
car begins to sound like a diesel engine, Cuts out, has no power, can maintain speed if
gas is pumped. Makes a "ticking noise when idling after it starts having issues.

Each coil gives spark, new plugs, wires, ECM, map sensor and housing. Crank shaft
position sensor as well..   Gives a code for ECM and Map sensor or vaccum leak.
Can't find leak with tradition method of carb cleaner. Pleanty of exhaust is coming out
of the tail pipe since it is 20 degrees here and i can see that very well.
Any help would be greatly appreciated.

5 Answers


Sounds like a spun bearing. Have you been losing coolant? If so check the oil dipstick for a white milky "goop". If it's present the intake manifold gaskets have failed allowing coolant into the crankcase. These engines are notorious for that. The result, if let go, is engine damage in the form of a spun bearing. HTH. -Jim

2 out of 2 people think this is helpful.

No milky goop.. No oil or coolant loss. Takes 2,000 miles to loose 1/2 a quart of oil. Anything else it could be?

1 out of 1 people think this is helpful.

Exactly what trouble codes do you have? The numbers. For example: P0300. -Jim


the codes i have replaced the sensors and connectors for are as follows TPS, CSP, MAP, MAF, plugs wires coils and catalytic converter... once again i am just getting a TPS code.... the codes seem to be not fixable but I have got a new PCM. After going to two different shops this is what they have determined is now the problem. I have had it flashed and need to know the location of the PCM on this model.. i know the install procedure, i just need to find the location of the Module itself..

1 out of 1 people think this is helpful.

just to be clear i forgot my password and where i posted the first question and found it after thanks DIRTY_HAREY

Your Answer

Add photo

Related Questions

  • where is the location of a pcm on a 2004 buick lesabre? stalling and power loss issue.. 1 answer

    I have changed just about every part on the car that has to do with sensors as well as control modules..(TPS, MAP, MAF, ECM, plugs, wires, coil packs) this is the last one.. i am having mixed result...

    2004 Buick LeSabre Custom


    Maintenance & Repair

  • Buick LeSabre 3 answers

    My 99 Buick LeSabre started rattling this morning when I Crank it up this morning. When I drove it to work as I gave you gas the rattle louder. When I crank it to go driving home as I was driving ...

    1999 Buick LeSabre Custom


    Maintenance & Repair

  • Where can I find the computer on a 1989 Buick LeSabre? 46 answers

    I have a 1989 Buick LeSabre that stalls out while in motion. Seems to happen when a part gets too hot. After sitting for awhile, I can drive for awhile again. Assume it is the Computer or the Catalyt...

    1989 Buick LeSabre


    Maintenance & Repair

  • 2001 Buick LeSabre Woes

    My Buick has been acting very strange lately. The transmission takes forever to shift up after 1st gear. The engine runs at 5k rpm for 5+ seconds before finally shifting. The other issue is once it...

    2001 Buick LeSabre Custom


    Maintenance & Repair


Looking for a Used LeSabre in your area?

CarGurus has 2,600 nationwide LeSabre listings starting at $1,450.


Search Buick LeSabre Questions

Buick LeSabre Experts

#1 Tom Demyan
Tom Demyan
Reputation 1,830
#2 John Saffrahn
John Saffrahn
Reputation 1,500
Reputation 1,340
View All

Related Models For Sale

Used Buick LaCrosse"
402 Great Deals out of 18,435 listings starting at $1,200
Used Chevrolet Impala"
937 Great Deals out of 35,886 listings starting at $700
Used Buick Century"
1,292 listings starting at $3,295
Used Buick Regal"
190 Great Deals out of 10,616 listings starting at $5,900
Used Toyota Camry"
1,651 Great Deals out of 98,959 listings starting at $895
Used Cadillac DeVille"
2,400 listings starting at $1,600
Used Lincoln Town Car"
49 Great Deals out of 2,401 listings starting at $1,542
Used Mercury Grand Marquis"
50 Great Deals out of 2,571 listings starting at $1,300
Used Honda Accord"
1,309 Great Deals out of 78,750 listings starting at $1,395
Used Ford Taurus"
348 Great Deals out of 23,127 listings starting at $1,400
Used Nissan Maxima"
475 Great Deals out of 24,246 listings starting at $800
Used Chevrolet Malibu"
1,182 Great Deals out of 72,976 listings starting at $695
Used Nissan Altima"
1,491 Great Deals out of 88,087 listings starting at $1,195

Used Cars For Sale

2005 Buick LeSabre Custom For Sale
9 Great Deals out of 284 listings starting at $1,988