Question about 1998 Pontiac Bonneville

1 Answer

1998 bonneville. turn key on and you can hear the fuel pump for 2 to 3 seconds. engine will start but only run at the most a minute. then when you turn the key off and back on you cannot hear the pump and engine will not start. wait about 2 minute and engine will start again with the same results. help!

Posted by on

Ad

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Expert
  • 169 Answers

Hello! You're symptoms sound very much like a common problem associated with the fuel pump resistor. The 3.8L Series II engine has a two speed fuel pump. There are two relays that control the fuel pump via the PCM module. The fuel pump relay and fuel pump hi-speed relay. Tied into the hi-speed relay is a fuel pump resistor that may go bad.

Symptoms vary but primarily the engine will start but die in a matter of seconds due to insufficient fuel pressure.

Here is a picture of the relay (this is the picture for a Grand Prix, but the box is the same for your vehicle) - which is located in the fuse box in the engine compartment:

1998 bonneville. turn key on and you can hear the  - e3ccead.jpg
What you can do to both diagnose this and either narrow it down to this or disqualify it as the culprit is remove relay #15, and bend out the tab labeled "85", and then reinstall the relay. If this does solve your problem, then you need to replace the fuel pump resistor, you can find it here. Doing this will bypass the resistor, and place the fuel pump in "high" speed mode at all times. Once you have replaced the resistor, you need to bend the tab back to its normal position and replace the relay.
NOTE: while this may be a helpful diagnosis tool, and provide a temporary fix - doing this procedure for a prolonged period of time can lead to fuel pump failure. Use this at your own risk.

Posted on Sep 25, 2009

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

What would cause fuel pump in a 1998 Bonneville not to run when key is in on position?


The pump is only suppose to work for a few seconds with key on/engine off. This primes the fuel system. then it runs when cranking and as engine runs. With key on it should, however, build up pressure and then shut off. Only real way to tell what is going on is use of a test guage often available at parts store loan-a-tool items. Shop manual will tell you correct pressure at key on and when running. Wrong pressure (low) can be bad pump, filter, regulator, relay or leaky injectors and other leaks. Very common for pump in tank to fail and often it will draw excess curent first damaging the relay.

Mar 22, 2015 | 1998 Pontiac Bonneville

3 Answers

Why wont my 1998 gmc 3500 sierra turn over


Check for fuel by pouring small amount of clean gas down throttle body and crank engine over. if it starts and runs just for a few seconds you have a fuel delivery problem. If it still does not run after several attempts check for spark at spark plugs. that should get diagnosis started

Aug 03, 2014 | 1998 GMC Sierra

1 Answer

Just quit running when you turn key over should you able to hear if fuel pump is kicking on


The fuel pump will run for about 1 second only and then the system computer shuts it off unless the engine starts or is being cranked over with the starter motor, so repeatedly turn the key off and on to keep it running or at least supplied with power. You will hear a low hum near the filler neck if the pump is working. I have this same truck and have replaced the fuel pump twice. One hint never run the fuel level lower than 1/8 tank or the fuel pump will overheat and that shortens the life of the pump dramatically.

Oct 15, 2012 | 1998 Dodge Dakota

2 Answers

1995 pontiac bonneville was running fine until I parked it. Came back several minutes later and now it wont fire off when I turn it over. After spraying starting fluid in it, it works fine for about 5...


Can you hear the fuel pump hum when you turn the key to on? If it will start on starting fluid, you definitely have a fuel problem. The pump being stuck or bad, or the filter being plugged, or vapor lock (try loosening the fuel cap, does it pull in air?)

Feb 26, 2011 | 1995 Pontiac Bonneville

1 Answer

It will not start and it is acting like it is no getting any gas


When turning the key to the ON position without starting the engine, you should hear the fuel pump running for 5 seconds. If heard the oil pressure switch is doing its job operating the circuit to the pump. If not heard the oil switch is at fault. Upon starting the engine the oil switch has a 3rd wire running to the fuel pump. When the engine fires and oil pressure is achieved, the computer shuts off the oil switch and tuns on the fuel pump relay. If the pump runs with the key on replace the relay. You say it will not start at all so probably the oil sending unit or switch we'll cal it is at fault

Jul 07, 2010 | 1992 Pontiac Bonneville

1 Answer

2000 volvo s80 ran out of gas put gas in but it wont start


Turn the key to full power (but do not crank the engine). You may hear a high pitched whine from behind you - that's the fuel pump running. Leave the key on for about five seconds, then turn it off for a minute. Turn the key on again for another five seconds, and off for a minute. Then turn the key on for five seconds, and then crank the engine.

If your car ran out of gas, you need to run the fuel pump this way to get fuel up to the engine again - all the lines from the tank to the engine are empty, so the pump needs to run to fill them.

If this doesn't work, it's possible that the fuel pump is vapor-locked and will have to be replaced. Some cars are more susceptible than others to this type of failure.

Dec 05, 2009 | 1999 Volvo S80

2 Answers

I am the original owner of a 1998 f150 4x4 with


Try pulling the relay's in the engine compartment and sand the connetors for the fuel pump after see if it comes on, turn the key to the run postion and listen for 2 second hum. aslo put in Lucas fuel stablizer if it's been sitting for any leangh of time.

Aug 26, 2009 | 1998 Ford F150 Regular Cab

1 Answer

1998 mercury mystique odd starting problem


I i were you i would check the ignition. it sounds like you are only connecting some of the time. And yes it is very normal to hear the fuel pump kick on when you turn the key to the on position.

Jan 08, 2009 | 1998 Mercury Mystique

2 Answers

92 honda civic turns over fine but doesnt start


ok, this is a commom problem with this 92 hondas,

it may be the pump fuel relay, which is under the dash on the driver side by the fuse panel.

here is a way to determine that.

when you turn the key on the on position

do you hear the fuel pump running while the engine light is on, and does the pump stop running afteer the engine light goes off?

if you do hear the pump running then it means that fuel pump is working fine ( since it way just replaced), but if you don't hear it running while the check engine light is on ( about 2 seconds) chances are the fuel pump relay is not working as it should.


also there are clicks that have to be heard on the starting process.

1 when you turn key to on possition

2 when the check engine light goes off( a click has to be heard just after it goes off)

3 after the car starts

If you don't hear this clicks, try to get your ear close the location of the fuel pump relay( near the fuse panel under the dash).


the fuse relay is just a bunch of circuits soldered, so you can get it to someone who knows how to solder and fix it.

or just get a replacement one at any junkyard. ( cheapp)

Nov 30, 2008 | 1992 Honda Accord

Not finding what you are looking for?
1998 Pontiac Bonneville Logo

740 people viewed this question

Ask a Question

Usually answered in minutes!

Top Pontiac Experts

yadayada
yadayada

Level 3 Expert

76691 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22219 Answers

Jeffrey Turcotte
Jeffrey Turcotte

Level 3 Expert

8531 Answers

Are you a Pontiac Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...