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I have an 01 Buick LeSabre that turns strong but will not start. I changed fuel pump and all. Could it be the relay switch? And we're is it?

Posted by Tyson Jamire Knight on


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James Mac Intosh

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There are three main reasons why an engine won’t start. Either there is no fuel or there is no spark or there is no compression.
Check that you are getting fuel delivery. Check that you are getting spark. If compression is down you can usually hear it upon cranking the motor but I doubt that you got a compression problem.
Check ALL fuses and relays. Failing all else, run a simple diagnosis using a code reader

Posted on Mar 28, 2019



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Spray some starting fluid in the throttle body to see if it runs. If so then you have a fuel problem. If it does not then you have an electrical problem and will need to see if the plugs are getting spark. Check fuel pump relay and fuses. Check in the owners manual for their locations. Check the fuse to the injectors to make sure they are good. If you do not have a manual then check out this link.

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Posted on Mar 28, 2019


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  • 48 Answers

SOURCE: relay location on a 98 Buick LeSabre?

look on the firewall in the middle area been a while since i worked on one of those vehicles , relay rail shoud be behind the engine

Posted on Dec 17, 2008


Roberta Smith

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SOURCE: Fuel pump in 2003 buick Lesabre

if there is an access plate you can remove then yes. but generally you have to drop the tank to get to it


Posted on Feb 06, 2009


Joseph Dugger

  • 35 Answers

SOURCE: Fuel relay placement 1991 Buick LeSabre. Replaced pump & filter still won't start

Your vehicle's fuel pump relay is located on the relay center, behind the glove box, 2nd column of relays, 2nd one from the top.

Posted on May 23, 2009


  • 44 Answers

SOURCE: Where is the fuel pump relay location on a 97

under the hood, on the black box on the passenger side top engine compartment

Posted on Feb 10, 2010


  • 76 Answers

SOURCE: 1995 Buick Lesabre fuel pump

Take off the plastic hush panel under the dash. About 3 screws and a couple of taps on the firewall end.

On top of that will be a diagram of the fuse panel on the side of the instrument panel. It's vertical and to the right of the glovebox, more or less. It's a mixture of fusees and relay.s Many of them may be empty on your car depending on the options.

Posted on May 21, 2011

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1 Answer

Put gas in my 01/02 Buick lesabre and now it won't start Turns over but no fire what can I do is there a fuel reset switch

Your vehicle doesn't have a reset switch . First off you would need to find out what's missing . You think a fuel reset problem . Knowing how these thing's work , training is how to find the problem . Could be a no spark problem . It take's special tools to test properly . Fuel pump pressure gauge , spark tester , scan tool . An you need factory service repair info. for checking
specifications . We don't guess as to what the problem is , we test . 048 Engine Hard to Start or No Start Scan Data for Starting Problems
GM Fuel Pump Relay Testing

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I have a 2004 Buick LeSabre V6 3800 Series 2 motor drove about 600 yards and then dyed it hasn't started back up since what is the problem do you think

Does it have spark ,is there fuel , is there compression ? If you have to ask you should take it to a qualified repair shop !

Sep 01, 2016 | 2004 Buick LeSabre

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I have a buick lesabre and it just quit running I have changed the fuel pump fuel filter spark plugs and wires and had the coil pack tested and they are good and the car will turn over but not start

didnt specify vehicle --generic answer --why did you change all those parts were they all bad ---square one check fuses and relays try to start with ether /starter fluid if starts fuel problem retest pump new doesn't mean free from defects also test relay and wire harness --if no start possible ignition switch wiring retest coils and plugs for spark ----with another person have them try to start vehicle while you feel back of exhaust if feels and sounds clogged possible bad catalytic converter---test and check egr valve possible carbon build up

Aug 12, 2016 | Buick LeSabre Cars & Trucks

1 Answer

Hello I a m trying to locate the fuel pump relay to check and see if it is bad or check the fuel cut off switch fuel pump not delivering fuel to the motor want to check these parts before ording a fuel...

The 97 Lesabre doesn't have a fuel cut off switch like some other vehicles do. The test I use is to check for power at the fuel pump harness connector near the fuel tank. When you turn the key from Off to Run the computer will close the fuel pump relay and supply power to the pump for about two seconds then it will turn the relay back off until you actually are cranking the engine over. This is a two person test as you need someone to turn the key to "Run" as the other person is checking for power at the connector. If you have over about 120,000 miles then the odds are pretty good that the pump has failed but It's always best to verify it with a test. Good luck and hope this helps!

Sep 21, 2011 | 1997 Buick LeSabre

1 Answer

Turn key to start and nothing happens. All lights are on, battery good. Doesn't turn over---nothing. Switch or starter or some kind of relay??? HELP!!!

For 1999 Buick LeSabre - but you took #1 off the list, so here's the whole "failure to start" list:

Priority Action Part Type Cause
1 Inspect Battery Battery Discharged or Faulty.
2 Inspect Battery Cable Corroded, Broken, Shorted or Poorly Connected Battery Cable.
3 Inspect Distributor Cap Distributor Cap Cracked or Burned.
3 Inspect Fuel Filter Clogged or Dirty Fuel Filter.
5 Inspect Ignition Coil Faulty Ignition Coil.
6 Inspect Wireset Worn, Damaged or Faulty Spark Plug Wire(s).
7 Inspect Spark Plug Incorrectly Gapped or Fouled Spark Plug(s).
8 Inspect Starter Starter Motor Faulty.
9 Inspect Fuel Pump Low Fuel Pressure.
10 Inspect Starter Relay Faulty Starter Starter Relay
11 Inspect Fuel Pump Relay Faulty Fuel Pump Relay.
12 Inspect Fuel Injector Pressure Regulator Faulty Fuel Injector Pressure Regulator.
13 Inspect Ignition Switch Improperly Connected or Faulty Ignition Switch.
14 Inspect Starter Motor Faulty Starter Motor
15 Inspect Fuel Injector Dirty or Worn Fuel Injectors.
16 Inspect Fuel Pump Strainer Clogged or Dirty Fuel Pump Strainer
17 Inspect Engine Control Computer Incorrect Operating Information Being Delivered and Sent From The EEC.
18 Inspect Fuel Tank Fuel Tank Empty.
19 Inspect Carburetor Carburetor Flooded or Faulty Choke.
20 Inspect Distributor Rotor Distributor Rotor broken, burned contacts, or loose
21 Inspect Distributor Worn, Loose, or Incorrectly Installed Distributor.

Sep 12, 2011 | 1999 Buick LeSabre

1 Answer

Where is the fuel pump reset switch?

There's none, check fuses and relay also check voltage at fuel pump.

May 17, 2010 | 2004 Buick LeSabre

1 Answer

Changed out fuel pump on 1998 Lesabre. Need to

There is no cut off switch. Check all fuses and the fuel pump relay.

Mar 13, 2010 | 1998 Buick LeSabre

2 Answers

Location of the fuel shut off on a 1992 buick lesabre

There is no fuel pump cut off switch on the LeSabre. Check the fuse and relay on the passenger side behind the glove box. There should be 4 black relays. The fuse pump is below this and the pump fuse is number 6. The other thing to keep in mind is the Pass lock system may not be recognizing the ignition key and has disabled the fuel pump from the ECM. Lets start with the fuse and relay first and we'll work on the Pass lock relearn process which takes about 30 min to do. Good luck and keep me posted, be glad to help.

Jun 08, 2009 | 1992 Buick LeSabre

1 Answer

Fuel relay placement 1991 Buick LeSabre. Replaced pump & filter still won't start

Your vehicle's fuel pump relay is located on the relay center, behind the glove box, 2nd column of relays, 2nd one from the top.

May 23, 2009 | 1999 Buick LeSabre

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