Question about 2005 Saturn ION

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2005 Saturn ion 2.2 Random Misfire. Had it looked at by a Gm mechanic and they said It was # 1 and 4 misfire. Should change out the coil and ignition modual . Did so and the engine light continues to blink. Also has very bad gas mileage. No loss of power. Just notice a loss of gas milage and sometimes a exhaust smell. Any suggestions?

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 110 Answers

SOURCE: Random Cylinder Misfire

Get a Haynes manual for your vehicle and use the troubleshooting guide there.  about $20 from amazon, auto parts store or haynes.com.  This WILL save you time and shortcut this and any future diagnosis. Haynes IMHO are top notch and I like them better than some factory service manuals that fgo for $100 and more.

David, 99 Saturn,  Cam position sensor codes seem to indicate a engine timing (not spark, but crankshaft/camshaft sync).  Old timing belts or worn tensioners can cause belts to jump a tooth or two which can have a pretty dramatic effect.  The belt could also be old/dryrot and have lost a tooth or two causing it to jump.  If any of these are the case, or if the timing belt interval is near,  replace timing belt, tensioner, idler roller if present and water pump.  FYI, quality OEM ignition wires shold last at least 10 years.  If they are really bad, you can open the engine compartment on a dark night and you will see sparks arcing between them and/or something metal nearby.  We all replace wires when we are not sure what the problem is, and regardless of what anyone tells you, it only rarely solves anything unless the car is more than 10 years old. 

good luck.

Posted on Oct 30, 2008

  • 1 Answer

SOURCE: Saturn 2001 SL code showing high idle misfire cyl,1 egr valve

i had that problem, you need to get your head gasket replace.

Posted on Mar 28, 2009

  • 21 Answers

SOURCE: high idle and misfire cylinder 1

This could have several causes however the most likely cause is either a throttle positioning sensor or the mass air flow sensor is bad. To check either of them you need to have an OBDII scanner that can read voltage. It would be best to send it to your local GM tech to have them do an onboard diagnostic rather than spend alot on parts that may not solve the problem.

Posted on May 21, 2009

co7196
  • 3433 Answers

SOURCE: power steering light on, light that looks like engine on

ck your drive belt. and fluid levels

Posted on Jun 08, 2009

johnjohn2
  • 5763 Answers

SOURCE: 2005 saturn ion 2. Will not start. Engine will

the first thing to do is scan the computer for codes,also when the module was installed did you clean the mounting area good? the next thing i would look at would be the crank sensor, also theres a reprogram on these cars,the dealer needs to install or update a computer progranm on some of these, you would have to call with the vin #, this doesnt affect your nostart condition, its just something you should have done,

Posted on Mar 07, 2010

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1 Answer

Car idles roughly.


-There are couple thing cause misfired:

-Bad Plug or plug wire.
-Fuel injector.
-Bas ignition coil.

Good luck


mai

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DTC P0300: Random multiple misfire detected. Probable cause:
1. Vacuum leaks, damaged hoses and/or incorrect routing
2. Fuel contamination
3. Ignition system fault. Check ignition module, coil, spark plugs and wires
4. Fuel system problem

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If spark plug wires are crossing it will cause intermittant misfires.

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A competent mechanic will check all probable causes associated with these DTC codes.
Code P0300: Random-Multiple misfire detected. Probable causes:
1. Vacuum leaks, damaged hoses, or improper routing
2. Fuel contamination
3. Ignition system - Ignition module, coil, spark plugs and wires
4. Fuel system
Code P0302: Cylinder 2 misfire detected. Probable causes:
1. Control unit software in need of updating
2. Faulty PCM or ECM
3. Faulty fuel injector
4. Ignition system
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Code 0304: Cylinder 4 misfire detected. Probable causes:
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Be sure the invoice enumerates all of these probable causes as having been checked. Also, some of the replacement parts installed earlier may be faulty.

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1 Answer

1996 nissan maxima random misfire


I'm confused! The heading on this question says 2004 Saturn Ion and the question itself says 1996 Nissan Maxima.

Doesn't matter much. The answer is the same for both. There are MANY things that can cause misfires. It could be spark plugs and wires. It could be ignition coils, it could be cylinder head gasket failures. It could be vacuum leaks. It could be broken or burnt valves. It could be faulty injectors....The list goes on, but I think you probably get the point by now.

Anyway, "Random cylinder misfire" simply means that you have more than one cylinder that is misfiring. It could be two cylinders misfiring or it could be ALL of the cylinders misfiring at times, or any combination in-between.

Proper diagnosis required.

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1 Answer

I have a random misfire code that comes up. the


is this a quad 4 ? if so you should replace the housing also , double platinum sparks plugs are advised also..

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1 Answer

Reduced power light/check engine runs very rough 2005 ion


usually when it gets colder outside the car will misfire and run rough because the ignition module/coil pack goes bad and makes it misfire,youre gonna have to replace the coil and module,,its the black long piece that sits on top of the spark plugs,1 wire connector and 4 10mm bolts remove them and pull up hard to pop the plug boots off the spark plugs,then install the new parts and you should be ok

Oct 19, 2009 | 2006 Saturn ION

1 Answer

Random multiple misfirings


Here is a list of possible causes. You should not drive the vehicle if the check engine light is flashing all the time, you can cause even more damage. It could pay to have a professional find the real cause.

Spark plugs that are incorrect for the application, cracked, improperly gaped or worn can cause the engine to misfire or run rough at all times.
An IC module that failed to correctly control the ignition coil(s) will cause the engine to misfire or run rough at all times.
Poor connections, broken wiring or wiring that has shorts to ground can cause the engine to misfire or run rough at all times. NOTE: Check connectors that might be pulled apart as the engine flexes or wires that short to ground as they pass near brackets or shorts to ground on the exhaust manifold.
Fuel injector(s) that are shorted, plugged or partially restricted can cause the engine to misfire or run rough at all times.
An ignition coil(s) that has low output, corrosion on the coil tower(s), is carbon tracked or arcs to ground will cause the engine to misfire or run rough at all times.
A PCM that failed to properly control the injector or ignition timing will cause the engine to misfire or run rough at all times.

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This is a pretty common problem. I would change your valve cover gaskets. They run around ~ 50 bucks. If they are bad it will leak oil into spark plug well and cause a misfire. Very known on the 740.. Also if tune was not anytime not too long ago id change spark plugs while you at it. Then clear the computer and if you still get misfire on 8 try changing the ignition coil which is right about the cylinder with cylinder ignition coil 5. clear the computer. if you get random misfire and misfire cyclinder 5 after then its your ignition coil. parts store runs around 100 bucks

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