Question about 1998 Oldsmobile Eighty Eight

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I replaced plugs/wires/and coil pack on 1998 Oldsmobile Eighty-eight. Still throw codes for random misfire. ANy ideas?

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  • Oldsmobile Master
  • 803 Answers

Possible "crank position sensor", but also inspect the harmonic balancer coming apart, the back of it has the on/off window plate that the ckp reads for ecm functions.

Posted on Jan 04, 2014

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 1118 Answers

SOURCE: 89 oldsmobile 98 won't start

If you suspect its a fuel problem best to do a fuel pressure test, you can rent a tester at auto zone and do it yourself. They also can show you how to use it and what pressure it should be. Also if you turn the key to on position you should hear a hum from the gas tank and then a click that is the pump running and the click is the relay, if you don't then the pump isent running, also chk. the fuse and relay, it could be as simple as a blowen fuse or a bad relay.

Posted on May 26, 2009

jimboz4
  • 305 Answers

SOURCE: I have two codes on my 1995 oldsmobile

P1640 Driver 1-Input High Voltage
P1670 Driver 4
have a look here for more codes and info......if this helps, would you leave feedback for me please....thanx
http://www.engine-light-help.com/oldsmobile-check-engine-light.html

Posted on Sep 17, 2009

  • 68 Answers

SOURCE: po300 multiple misfires.I have changed the coil

reset the ec module by disconnecting the battery for a few minutes. If that does not work have autozone do a free scan and ask them to reset the codes.

Posted on Oct 13, 2009

Molson02536
  • 3854 Answers

SOURCE: I have a 1998 olds 88. got p300 code from

P0300 is a generic code to indicate multiple misfires throughout your engine. You do have a 6 cylinder engine and you may have to replace all 6 spark plugs and check all the spark plug wires. The other thing to keep in mind also is, the fuel injectors could be dirty or the fuel pressure may be low causing the misfire. Start with the simple and recheck the spark plug wires and try to replace the remaining 3 spark plugs that was not replaced. Good luck and hope you get your car running 100%, keep me posted and thank you for using Fixya.

Posted on Mar 06, 2010

  • 91 Answers

SOURCE: Would ignition coil problem cause 2001 Intrigue to misfire?

Not hard at all. Seven bolts and one connector. No computer work. But you need to know if it is the front coil or back coil. Front coil for cylinders 2, 4, 6. Rear for 1, 3, 5.


90d08d7.jpg http://99intrigue.shutterfly.com/headgasket/97

Posted on Apr 07, 2010

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1 Answer

1999 oldsmobile eighty eight check engine light on code say's misfire on cylinder # 4 any help please


The first thing to do is change the spark plugs, it's inexpensive and may solve your problem. If that's not it it could be 100 other things. You''ll need to have someone troubleshoot it.

Oct 11, 2013 | 1998 Oldsmobile 88

2 Answers

Looking for the correct spark plug wire placement on a 1995 oldsmobile 88 LSS


I'm assuming that you are refer to the "firing order", so check this...

1995 Oldsmobile Eighty-Eight Royale FWD 3.8 liter V-6 VIN "K"
and
1995 Oldsmobile Eighty-Eight Royale FWD 3.8 liter SC V-6 VIN "1"

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1995 Oldsmobile Eighty-Eight Royale FWD 3.8 liter V-6 VIN "L"

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Hope helps (remember comment and rated this).

Jul 22, 2010 | 1995 Oldsmobile Eighty Eight

1 Answer

How to replace the ignition module in a 1993 oldsmobile eighty-eight royale


Find coil pack I think it is on the front passenger side. Disconnect negative battery cable. Remove electrical connector from module. Remove the four or six bolts that fasten the coil pack/module to the motor. Mark location of coil packs before removing from module. Replace in reverse order.

Mar 11, 2010 | 1993 Oldsmobile Eighty Eight

1 Answer

Code p306 misfire on injector 6


Random misfires are usually caused by a leaking vaccum pipe, and will only be apparent at idle and sometimes at low engine speeds under part throttle.
Isolated misfires are usually caused by a faulty injector, coil pack, ignition lead, or low compression.

Well, you're going to have to check the spark plug,  spark plug wire, the coil pack, low compression, and the ignition lead, which only really leaves the injector, or even an intake leak at the offending cylinder. 

Start the engine and then spray intake spray or the like around the intake at the offending cylinder and see if the engine note changes. If it does, then you have an intake leak, otherwise, they need to check the injector in the offending cylinder. 

Good luck and hope this helps. It might just be time for a tune up: new spark plugs and wire or some fuel injector cleaner every fill up for now.

May 05, 2009 | 1998 Oldsmobile Eighty Eight

3 Answers

1997 Oldsmobile Cutlass P0405 EGR Error Code


P0300 Diagnostic Code - Random Misfire
Technical description:--
Random/Multiple Cylinder Misfire Detected:---
Exactly what does this code means:--
Basically this means that the the car's computer has detected that not all of the engine's cylinders are firing properly.
A P0300 diagnostic code indicates a random or multiple misfire. If the last digit is a number other than zero, it corresponds to the cylinder number that is misfiring. A P0302 code, for example, would tell you cylinder number two is misfiring. Unfortunately, a P0300 doesn't tell you specifically which cylinder(s) is/are mis-firing, nor why.
Symptoms:--
the engine may be harder to start.the engine may stumble / stumble, and/or hesitate.
other symptoms may also be present…There may be rough idle, sputters and stalls and jerks.
Causes:--
A code P0300 may mean that one or more of the following has happened:
Faulty spark plugs or wires, Faulty coil (pack), Faulty oxygen sensor(s)
Faulty fuel injector(s),Burned exhaust valve, Faulty catalytic converter(s)
Stuck/blocked EGR valve / passages, Faulty camshaft position sensor, Defective computer.
Possible solutions for this error problem:--
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 vehicle, 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.
Random misfires that jump around from one cylinder to another (read: P030x codes) also will set a P0300 code. The underlying cause is often a lean fuel condition, which may be due to a vacuum leak in the intake manifold or un-metered air getting past the airflow sensor, or an EGR valve that is stuck open.
Thanks. Keep updated for any more query. You can rate this solution and show your appreciation.

Dec 29, 2008 | 1997 Oldsmobile Cutlass Supreme

1 Answer

Intermidient ''bogging''


It could be your computer. Find the computer (sometimes behind the glove box) it should be a silver box with lots of wires. do a tap test on it (gently tap it with a screwdriver handle while the engine is running if the misfire comes and goes while tapping it needs to be replaced)

Nov 22, 2008 | 1995 Oldsmobile Eighty Eight

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