Question about 2000 Oldsmobile Intrigue

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Misfire on banks 1 & 2. changed plugs and coil pack. sounds like a lawn mower. Jerks, bogs, and sometimes stahls.

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Check plugs and wires

Posted on Mar 26, 2011

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Have changed all plugs and coil packs but still giting miss in 1 3 5 cil think its a short in wire hornins but cant find a diagram


If you are getting a misfire code on those three cylinders (all on just that one bank of engine!), it's probably not an electrical short, but something else causing misfire. Misfire codes are set when the power output from that cylinder is less than expected: the pcm senses a crankshaft lag in power output and sets the code.

Typically, misfires are caused by weak or missing spark, or by fuel/air mixture problems, or by low cylinder compression. The fact that your misfires are all on one bank (side) of the engine sounds suspiciously like the fuel/air mixture might be wrong for that bank, or the cylinder compression is low on that bank.

You could use a spark tester just to check spark on 1, 3, & 5. Use a calibrated spark tester to compare both banks-all 6 cylinders. I think you will see equal spark at all cylinders. The only shorts would be in the spark plug wires. And not likely all 3 went bad at once, although you could check them, maybe swap a few around and see if the misfire follows the wire.

Start looking for air or vacuum leaks that only affect bank 1. Possibly an intake manifold leak, could also be an exhaust leak, something that affects the air/fuel mixture in the bank 1 cylinders. Also you could do a compression test of the cylinders to make sure bank 1 is good, same compression as in bank 2 (the other side of engine). Just some tips to help you out, good luck.

Feb 20, 2016 | Cars & Trucks

1 Answer

What does this mean ? P1313 Misfire Rate Catalyst Damage Fault - Bank 1


This is an ignition error. that could one of several things wrong. since it is noted in Bank 1 it is a problem with the right side of the engine Cylinders 1, 3 or 5. located under the intake manifold (close to the firewall)
Other causes:
1. Fouled plug (cylinders 1, 3 or 5)
2. Bad ignition Coil (cylinders 1, 3 or 5)
3. Wire fault to Coils (cylinders 1, 3 or 5)
4. Fault with the O2 sensors (Right side bank 1)

1. Start by checking /changing the plugs. You have to remove the intake manifold to get to plugs (cylinders 1, 3 or 5). if the mileage is high and they have not been changed, then its probably due.
2. Inspect the coil wires for cracks or faults.
3. Swapping the coils cylinders 2, 4 & 6 for cylinders 1, 3 & 5. if the fault changes to bank 2 then you have a bad coil on 2, 4 or 6.

Oct 01, 2014 | 2003 Jaguar X-Type

1 Answer

2003 bonneville has misfire 3 & 6.


I had the same problem with my ford and replaced the plugs wires and coil packs. that did not fix it so I replaced cam sensor and it solved my problem

Apr 09, 2014 | Pontiac Bonneville Cars & Trucks

1 Answer

1996 5.7 vortec misfire cyliner 4 and 6


have you cleared the codes between fault reads
clean the maf first .....replace the maf if faulty
coil packs ?
injectors

Apr 16, 2017 | 1996 Chevrolet Tahoe

2 Answers

I HAVE A P0300 OBD CODE I DID A COMPRESSION TEST TO ENGINE AND IT PASS THE TEST,I DID CHECK EGR VALVE,CHANGE SPARK PLUGS,IGNITION WIRES, CAP AND ROTOR, I DID CHECK TPS SENSOR MAF SENSOR,FUEL PRESSURE,AND...


p 0300 code is for random misfires
random misfires are more from dirty /faulty injectors or low fuel pressure than anything else
have a pressure test done to check pressure regulator , filter and pump operation
use a can of quality injector cleaner or remove and clean the injectors

Apr 06, 2017 | 1997 Nissan Pathfinder

1 Answer

I change spark plugs and wire because the car was idle was high. It was running fine before we change the plugs and wires just high idle. But now it run ruff, pops and back fires and you have to punch the...


sounds like you have the firing order off ! re- trace your wires from coil packs to plugs, you have one or several mixed up, the coil packs are numbered, and you wil have 135 on one bank and 246 on the other, If I'm not mistaken 135 are closest to the radiator, you can tell by seeing which head is the farthest forward towards pass side of car and that is Bank 1 which will have 135 cylinders.

May 28, 2012 | 1989 Buick LeSabre

1 Answer

I have a 2000 Hyundai Sonata that runs rough when you start it up. I hooked a code reader to it and it said that system was lean on bank 1 and multi misfire and not reading 02 sensor on bank one. I have...


time to get the engine properly scanned, real time not code scanner, then you will have the readings from sensore and actuators, diagnose from there

Dec 14, 2010 | Hyundai Motor 2004 Sonata

1 Answer

P134, p0141, po300, po130 and po135. 2005 Sunfire.


Given that most of the trouble codes are for the O2 sensor, I think I would change it. The multiple misfires could be because of improper fuel/air mixture caused by a bad sensor. Disconnect the negative(-) battery terminal then change the sensor. Disconnecting the negative(-) should reset the computer and allow the fuel/air mixture to return to default allowing the engine to start.
P0130 - O2 Sensor Circuit Malfunction (Bank 1 Sensor 1)
P0134 - O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 1)
P0135 - O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)
P0141 - O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)
P0300 - Random/Multiple Cylinder Misfire Detected

Jun 16, 2010 | 2005 Pontiac Sunfire

3 Answers

2003 Ford Ranger 4x4 extended cab- diagnostics checked and got these codes- P0171, P0174, P0300, P0316. Can you tell me what they mean?


P0171------ system too lean bank#1
Po174------ system too lean bank#2
For these 2 codes, try cleaning the maf sensor (mass air flow), that is mounted in the big black hose that goes from the air filter housing to the throttle plate, if it is dirty, that will cause those 02 sensors to send a signal to the computor to lean the air fuel mixture. If cleaning it doesn't work, the sensors will probably need changing.
P0300---- Random/multiple cylinder misfire
P0316---- Cylinder misfire at start up---- first 100 revolutions.
On those 2 codes, you have to do some testing to find out why there is a misfire.
Possible causes:
dirty/malfunctioning injectors
weak coil pack
fowling spark plugs/wires
Low fuel pressure

May 11, 2010 | 2003 Ford Ranger Regular Cab

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