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The BMW Range
5 Series
How to tell if timing sensor needs replacement
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<blockquote data-quote="moots" data-source="post: 68698" data-attributes="member: 219"><p>Here's my personal experience:</p><p></p><p>1. hard starting -> 4-5 seconds to start in the morning one day on my way to work when normally it takes just a crank</p><p>2. reached office.on way out for lunch-> unable to start</p><p>my trouble shooting:</p><p>1.chk for fuel from hose into fuel rail whilst cranking- nil fuel</p><p>2. went to give a few thumps at the fuel pump in boot - nil joy</p><p>3. chkd fuel pump connector for dirt - ok</p><p>4. swapped fuel pump relay with other adjacent relays - nil joy</p><p>6. called Kenny from M Speed and he said to chk for spark at plugs.if nil,could be CPS(crank position sensor) - confirmed nil spark</p><p>7. i straight away disconnected the CPS connector and confirmed the reading at 8 megohms.per Haynes manual it should be 500-600 ohms</p><p>8. went on to buy the CPS at Autobav PJ at rm 240 i think (definitely not > rm300) and fitted - presto start at first crank. :yes!: </p><p></p><p>this happened about a year ago........</p></blockquote><p></p>
[QUOTE="moots, post: 68698, member: 219"] Here's my personal experience: 1. hard starting -> 4-5 seconds to start in the morning one day on my way to work when normally it takes just a crank 2. reached office.on way out for lunch-> unable to start my trouble shooting: 1.chk for fuel from hose into fuel rail whilst cranking- nil fuel 2. went to give a few thumps at the fuel pump in boot - nil joy 3. chkd fuel pump connector for dirt - ok 4. swapped fuel pump relay with other adjacent relays - nil joy 6. called Kenny from M Speed and he said to chk for spark at plugs.if nil,could be CPS(crank position sensor) - confirmed nil spark 7. i straight away disconnected the CPS connector and confirmed the reading at 8 megohms.per Haynes manual it should be 500-600 ohms 8. went on to buy the CPS at Autobav PJ at rm 240 i think (definitely not > rm300) and fitted - presto start at first crank. :yes!: this happened about a year ago........ [/QUOTE]
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