Question about 1997 Oldsmobile Bravada

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Oldmobile Bravada Misfire problem

I have had the spark plug change, new ignition cap, new plug wires, newfuel filtter. The coil was found to be OK. Problem isgetting worst. I have added cleaner in gas for fuelinjectors. The check engine light come on around 60 MPH and thenresets in about day.

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  • jananned Sep 08, 2008

    I have a 1996 Olds Bravada - one day it wouldn't start, thought it needed a new battery. I was told that it was an electrical problem, by one mechanic and another said that it needed a tune up. After the tune up and new battery - same thing - once you get the car jumped it will run,but when you turn it off you can't get it restarted. After replacing all plugs, ignician wire & starter, carborator, fuel pump - had altinator checked - engine looks brand new...... $1,500.00 later - same thing - it started up at the mechanics, but I took it home and the next day same thing.... I took it to an electrical guy... He replaced a few bad fuses, but couldn't find anything wrong. so far so good it has been starting, but I'm not too confident that the problem has been solved. Any ideas??/

  • Anonymous Nov 28, 2008

    My 97 has the same problem. It will start with no problem all summer, but as soon as the temps go below 40 the engine won't turn over. If i continue to turn the key it will turn over but that could be anywhere between 5 turns to 50 turns of the key. The dealer can't seem to solve this one either.

  • bubbles2jr Feb 03, 2009

    i have the same problem and have done a lot if stuff like u listed please help but mine is 2001

  • Anonymous May 11, 2010

    has anyone tried the oxygen sensor.



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Posted on Jan 02, 2017

  • 57 Answers

SOURCE: 1991 Olds Bravada 4.3 v6 rough idle and backfiring.

Ok guys, let's fix these things here!
Just went through this myself, so do the following:
Go to your local parts store and buy a Haynes Repair Manual.
You need to read the book first, learn how the ECM (Electronic Control Module) works. You'll see that there are alot of sensors and components that make up the fuel emissions bologna.
The nice thing about this system is not only does the ECM control all electrical functions, it also trouble-shoots it's self. When a component or sensor goes out, the ECM stores a code for that event in it's memory. You can use the Haynes Repair Manual to put the ECM into diagnostic mode and thus read any codes present.
So, all that's left is replacing what the EMC tells you too! :) Good Luck!

Posted on Feb 06, 2009

  • 2989 Answers

SOURCE: 1993 Oldsmobile Cutlass Ciera S 6 Cyl 3300 Speed Problem

Yep...try replacing your coil pack....

Posted on Mar 10, 2009

  • 4669 Answers

SOURCE: car forces me to slow down

I doubt it is a speed sensor. It is in the transmission near the passenger side cv axle. Have you scanned it for codes? You can do it with a paperclip.

Posted on Mar 11, 2009

  • 2004 Answers

SOURCE: computer at auto parts place says misfire on cylinder 5

Try replacing the fuel pump too.


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Posted on Jun 05, 2009

  • 414 Answers

SOURCE: Engine Not Responding/ Not getting power

Could be the other coil pack. Be sure to check and clear all codes stored.

Posted on Jul 08, 2009

Testimonial: "I forgot to post back! New coils were purchased and I personally replaced them. The car ran 100% better than before! Thanks fer the help!!!!"

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Related Questions:

3 Answers

Changed spark plug coils and get a po305 code

Do you have a module for coils?could be a bad wire on # 5.

May 23, 2016 | 2004 Kia Sorento EX

4 Answers

Got a p0304 code come up on my 2002 olds Bravada, replaced camshaft and it still didnt fixed it?

P0304 Code - Cylinder #4 Misfire Detected
A P0304 code means that the the car's computer has detected that one of the engine's cylinders is not firing properly. In this case it's cylinder #4.

Symptoms may include:
* the engine may be harder to start
* the engine may stumble / stumble, and/or hesitate
* other symptoms may also be present

Causes: A code P0304 may mean that one or more of the following has happened:
* Faulty spark plug or wire
* Faulty coil (pack)
* Faulty oxygen sensor(s)
* Faulty fuel injector
* Burned exhaust valve
* Faulty catalytic converter(s)
* Running out of fuel
* Poor compression
* Defective computer

Possible Solutions:
If there are no symptoms, the simplest thing to do is to reset the code and see if it comes back.

If there are symptoms such as the engine is stumbling or hesitating, check all wiring and connectors that lead to the cylinders (i.e. spark plugs). Depending on how long the ignition components have been in the car, it may be a good idea to replace them as part of your regular maintenance schedule. I would suggest spark plugs, spark plug wires, distributor cap, and rotor (if applicable). Otherwise, check the coils (a.k.a. coil packs). In some cases, the catalytic converter has gone bad. If you smell rotten eggs in the exhaust, your cat converter needs to be replaced. I've also heard in other cases the problems were faulty fuel injectors.

Hope helps.

Apr 09, 2011 | 2002 Oldsmobile Bravada

1 Answer

It cranks over but no spark

Welcome to Fixya

Check each plug wires are ok. Replace them ASAP if you found cuts are the like. If wires are good then check the spark plugs one at a time. Check gaps, age is important if they are old, replace them with new spark plugs. Check the distributor cap, the points in poor condition, cracked distributor cap or rotor arm, poor connections to the ignition coil / circuit & earthing, the coil itself shorting out.

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Mar 26, 2011 | Hyundai Sonata Cars & Trucks

2 Answers

Engine Diagnostic code P1399 for a 1998 Honda Cr-V. I'm trying to figure out exactly what i need to do to make this go away?

It could possibly be one of the four ignition wires, or the engine is misfiring. A cheap method of finding out would be to try to swap or replace the plug wires. If that doesnt solve it I recommend taking it in to a mechanic to find out what is causing your misfire.

Mar 01, 2011 | Honda CR-V Cars & Trucks

1 Answer

There is a misfire in my engine, changed plugs & wires. now it reads that the fuel leveling sensor is bad, will this help?

If there is a misfire, the cylinder that it is misfiring in will be recorded as a code in the computer.

Have the car scanned to determine which cylinder is bad. Then, replace the coil pack going to that cylinder.

Ignition Coil Pack Removal & Installation 2V Engine To Remove:
  1. Twist the spark plug wires off of the ignition coil towers. Mark the spark plug wire positions so they can be installed in their original positions.
  2. Disconnect the electrical connector from the ignition coil. CAUTION
    When removing the spark plug wires, a slight twisting motion will break the seal and ease removal.

  3. Remove the mounting screws and remove the ignition coil.
To Install:
  1. Position the ignition coil pack on engine.
  2. Install mounting screws and torque to 53 in-lbs. (6 Nm). coilbolt.gif

  3. Connect ignition coil pack electrical connector.
  4. Match previously marked spark plug wires to ignition coil and install.
4V Engine To Remove:
  1. Remove the RH cowl grille cowlpic.gif
  2. Remove the screws and the water shield
  3. Mark spark plug wire positions
  4. Disconnect the spark plug wires from the ignition coil CAUTION
    When removing the spark plug wires a slight twisting motion will break the seal and ease removal.
  5. Disconnect the ignition coil electrical connector coilconn.gif

  6. Remove the mounting screws and remove the ignition coil
To Install:
  1. Position ignition coil pack. Install mounting screws and torque to 56 in-lbs. (6Nm)

  2. Connect ignition coil pack electrical connector
  3. Match previously marked spark plug wires to ignition coil and install
  4. Position water shield and install screws
  5. Install RH cowl panel
prev.gif next.gif

Aug 11, 2010 | 2002 Ford Taurus

2 Answers

What do these trouble codes mean po306 cyclinder misfire detected .how do i fix the problem?

it means you have a misfire on the number 6 cylinder

this could be caused by a whole lot of reasons.

start by inspecting for a bad plug wire if it has them

check for fire on the cylinder with a spark test tool from local part store

if it is a coil-on-plug set-up, check the coil for fire

replace coil/plug wire as needed, replace boot on coil if coil needed, replace spark plugs

Oct 11, 2009 | 1998 Chevrolet Blazer

3 Answers

What my cause a misfire in a 98 dodge avenger

  1. A lot can cause a misfire:
  2. Primarily fouled spark plug(s) or bad wire(s).
  3. also a corroded distributor cap or rotor. a vacuum leak,
  4. A bad or leaking fuel injector,
  5. Engine out of time and mechanical engine faults including Compression leaks and sticking valves.
  6. More often than not it is simply a fuel or ignition system problem both of which are fairly easy to solve.
Troubleshoot your ignition by first assuring that you have fire.

If the engine does not crank at all pull the coil wire off at the cap and set it within an inch of the tower and crank the engine. sparks should emit from this wire to the coil.

You can test each individual spark plug wire this same way by just unplugging it and arcing the spark. then pull out the spark plugs to examine them and replace as necessary (on a dodge use champion plugs). the cap can be removed (make sure to put it on exactly as it came off and put each wire back exactly as it was or it will NOT fire correctly). to check for fuel disconnect the line at the fuel rail on top of the intake manifold and turn the key to ON. this will kick on the fuel pump and should push fuel out of the line as the pump primes. if this test works but you still are not getting fuel to a particular cylinder(s) start unplugging injectors while the engine is running and make a note of which one does not change the idle as this is your problem cylinder. remember any ignition or fuel system fault will disrupt your fuel/air ratio and can damage the catalytic convertor and o2 sensors

Sep 25, 2009 | 1998 Dodge Avenger

1 Answer

My 84 Cortina bakkie 3.0 V6 has a terrible missfire.. I changed plugwires, the rotor looks fine, can it be the coil? In the morning when I start the van, it does not take, however, if i run a wire from the...

Your ignition circuit is faulty- it's probably the ignition switch itself that is defective. The misfire is that the distributor cap has a crack in it and the spark is directed to a particular plug wire and the spark has found its way to a non designated plug wire. It wouldn't be the coil, change the rotor and distributor cap be sure to mark your plug wires and reinsert into the proper hole in the distributor cap. Good Luck, Jim

Aug 28, 2009 | 1984 Ford F 150

1 Answer

96 old bravada multiple misfires

Check for bad spark plug wires or wires connected to the wrong cylinder.

May 29, 2009 | 1996 Oldsmobile Bravada

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