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The BMW Range
5 Series
E34
E34 coil packs & fan clutch
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<blockquote data-quote="Cressidom" data-source="post: 215890" data-attributes="member: 3217"><p>Teejay</p><p> </p><p>for a start you covered the basic possible irratic idle culprits</p><p>1. did you feel a difference after changing and cleaning the ICV and supressors? - NO</p><p>2. are the same symptoms coming up again? -ones you mention above</p><p>YES</p><p></p><p>further investigation </p><p>1. coil packs, these can be checking using a multimeter as they have resistance inside that will determine if they have shorted out-WILL HAVE A WIREMAN CHECK IT.</p><p></p><p>2. cam sensors and crank sensors - normally do not fail but may need alittle cleaning - DOUBT CLEANING WILL HELP - BUT WILL TRY</p><p></p><p>3. MAF, could also send misaligned signal that can cause A/F mixture to be off-SWAPPED OFF ANOTHER CAR STILL SAME PROB.</p><p></p><p>4. <a href="http://bmwclubmalaysia.com/forums/newreply.php?do=newreply&noquote=1&p=228495#" target="_blank"><span style="color: blue">[COLOR=blue! important]<span style="font-family: 'verdana'">[COLOR=blue! important]<span style="font-family: 'verdana'">fuel </span></span></span><span style="font-family: 'verdana'">[COLOR=blue! important]<span style="font-family: 'verdana'">pressure </span>[/COLOR][COLOR=blue! important]<span style="font-family: 'verdana'">regulator</span>[/COLOR]</span>[/COLOR][/COLOR]</a> - if you have to crank a long time in the mornings or when the car has been off for more then 8 hours or so, this could be it - NOW RUNNING 3 BAR- SAVING TO CHANGE TO ADJUSTABLE -FPR</p><p></p><p>5. spark plugs - use correct ratings, sometimes fouling can causing shortings-WHAT ARE THE GOOD PLUGS TO USE.?</p><p></p><p>6. battery - very remote cases but do check if its time to change- DOUBT THAT BATTER IS THE CAUSE FOR ROUGH IDLING.STARTING IS GREAT SOMETIMES.</p><p> </p><p>Please let me know what else is possible.</p><p> </p><p>dom</p></blockquote><p></p>
[QUOTE="Cressidom, post: 215890, member: 3217"] Teejay for a start you covered the basic possible irratic idle culprits 1. did you feel a difference after changing and cleaning the ICV and supressors? - NO 2. are the same symptoms coming up again? -ones you mention above YES further investigation 1. coil packs, these can be checking using a multimeter as they have resistance inside that will determine if they have shorted out-WILL HAVE A WIREMAN CHECK IT. 2. cam sensors and crank sensors - normally do not fail but may need alittle cleaning - DOUBT CLEANING WILL HELP - BUT WILL TRY 3. MAF, could also send misaligned signal that can cause A/F mixture to be off-SWAPPED OFF ANOTHER CAR STILL SAME PROB. 4. [URL="http://bmwclubmalaysia.com/forums/newreply.php?do=newreply&noquote=1&p=228495#"][COLOR=blue][COLOR=blue! important][FONT=verdana][COLOR=blue! important][FONT=verdana]fuel [/FONT][/FONT][/COLOR][FONT=verdana][COLOR=blue! important][FONT=verdana]pressure [/FONT][/COLOR][COLOR=blue! important][FONT=verdana]regulator[/FONT][/COLOR][/FONT][/COLOR][/COLOR][/URL] - if you have to crank a long time in the mornings or when the car has been off for more then 8 hours or so, this could be it - NOW RUNNING 3 BAR- SAVING TO CHANGE TO ADJUSTABLE -FPR 5. spark plugs - use correct ratings, sometimes fouling can causing shortings-WHAT ARE THE GOOD PLUGS TO USE.? 6. battery - very remote cases but do check if its time to change- DOUBT THAT BATTER IS THE CAUSE FOR ROUGH IDLING.STARTING IS GREAT SOMETIMES. Please let me know what else is possible. dom [/QUOTE]
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