Hi Guys, 14 SG was running perfectly, quiet, no issues. Stopped at a set of lights and suddenly rough idle, clattering noise from primary case, stalling. Hunts badly like a diesel engine and will rev between 1200 to below 900 and eventually stall. On start up will rev to 1800-2000rpm.

Checked so far.

It has fresh fuel
New Battery, tight terminals
New TMAP sensor
New CHT sensor
Fuel filter and all fuel lines checked inc inside tank
No frayed or damaged wires, all plugs checked
New inlet manifold seals
Spark plug wires and coil test within range
Crank Position sensor clean and plug, wires etc good.
New Spark Plugs
No vacuum leaks (rubber plug is good)
Cylinder temps measured and ok.
EITMS disabled.
Engine Compression checks within range.

Initially NO CODES were thrown. After installing new CHT Sensor it throws P0505, loss of idle speed control.

Any suggestions as to what should be checked/tested/replaced next would be very welcome. My sanity thanks you in advance.
 

Hi Guys, 14 SG was running perfectly, quiet, no issues. Stopped at a set of lights and suddenly rough idle, clattering noise from primary case, stalling. Hunts badly like a diesel engine and will rev between 1200 to below 900 and eventually stall. On start up will rev to 1800-2000rpm.

Checked so far.

It has fresh fuel
New Battery, tight terminals
New TMAP sensor
New CHT sensor
Fuel filter and all fuel lines checked inc inside tank
No frayed or damaged wires, all plugs checked
New inlet manifold seals
Spark plug wires and coil test within range
Crank Position sensor clean and plug, wires etc good.
New Spark Plugs
No vacuum leaks (rubber plug is good)
Cylinder temps measured and ok.
EITMS disabled.
Engine Compression checks within range.

Initially NO CODES were thrown. After installing new CHT Sensor it throws P0505, loss of idle speed control.

Any suggestions as to what should be checked/tested/replaced next would be very welcome. My sanity thanks you in advance.
 

IAC , you can clean them with Maf sensor cleaner 

Hi Guys, 14 SG was running perfectly, quiet, no issues. Stopped at a set of lights and suddenly rough idle, clattering noise from primary case, stalling. Hunts badly like a diesel engine and will rev between 1200 to below 900 and eventually stall. On start up will rev to 1800-2000rpm.

Checked so far.

It has fresh fuel
New Battery, tight terminals
New TMAP sensor
New CHT sensor
Fuel filter and all fuel lines checked inc inside tank
No frayed or damaged wires, all plugs checked
New inlet manifold seals
Spark plug wires and coil test within range
Crank Position sensor clean and plug, wires etc good.
New Spark Plugs
No vacuum leaks (rubber plug is good)
Cylinder temps measured and ok.
EITMS disabled.
Engine Compression checks within range.

Initially NO CODES were thrown. After installing new CHT Sensor it throws P0505, loss of idle speed control.

Any suggestions as to what should be checked/tested/replaced next would be very welcome. My sanity thanks you in advance.
 

IAC , you can clean them with Maf sensor cleaner 

Hi Guys, 14 SG was running perfectly, quiet, no issues. Stopped at a set of lights and suddenly rough idle, clattering noise from primary case, stalling. Hunts badly like a diesel engine and will rev between 1200 to below 900 and eventually stall. On start up will rev to 1800-2000rpm.

Checked so far.

It has fresh fuel
New Battery, tight terminals
New TMAP sensor
New CHT sensor
Fuel filter and all fuel lines checked inc inside tank
No frayed or damaged wires, all plugs checked
New inlet manifold seals
Spark plug wires and coil test within range
Crank Position sensor clean and plug, wires etc good.
New Spark Plugs
No vacuum leaks (rubber plug is good)
Cylinder temps measured and ok.
EITMS disabled.
Engine Compression checks within range.

Initially NO CODES were thrown. After installing new CHT Sensor it throws P0505, loss of idle speed control.

Any suggestions as to what should be checked/tested/replaced next would be very welcome. My sanity thanks you in advance.
 

IAC , you can clean them with Maf sensor cleaner 

Yup, mine started the other day immediately after I filled up. Didn't want to start, wouldn't idle, slowing down on closed throttle you can hear it has no air going into it at all, pull up holding throttle slightly open. Today it was holding 1800 revs between shifts and while sitting, then back to normal. Figured it was IACV as I've had the same issue with my Triumph. It's times like these I miss carburettors. 

Hi Guys, 14 SG was running perfectly, quiet, no issues. Stopped at a set of lights and suddenly rough idle, clattering noise from primary case, stalling. Hunts badly like a diesel engine and will rev between 1200 to below 900 and eventually stall. On start up will rev to 1800-2000rpm.

Checked so far.

It has fresh fuel
New Battery, tight terminals
New TMAP sensor
New CHT sensor
Fuel filter and all fuel lines checked inc inside tank
No frayed or damaged wires, all plugs checked
New inlet manifold seals
Spark plug wires and coil test within range
Crank Position sensor clean and plug, wires etc good.
New Spark Plugs
No vacuum leaks (rubber plug is good)
Cylinder temps measured and ok.
EITMS disabled.
Engine Compression checks within range.

Initially NO CODES were thrown. After installing new CHT Sensor it throws P0505, loss of idle speed control.

Any suggestions as to what should be checked/tested/replaced next would be very welcome. My sanity thanks you in advance.
 

IAC , you can clean them with Maf sensor cleaner 

Thanks mate but they dont have IAC the have TMAP sensors and its been changed. Bloody frustrating.

IAC , you can clean them with Maf sensor cleaner 

Thanks mate but they dont have IAC the have TMAP sensors and its been changed. Bloody frustrating.

Will open up the manual later, are the TMAP sensors easy or cheap to replace?

Just an update for future reference. Primary cam chain tensioner was causing the issues.

Just an update for future reference. Primary cam chain tensioner was causing the issues.

Really??

Just an update for future reference. Primary cam chain tensioner was causing the issues.

Really??

How would it cause a 2000 rpm idle?

Just an update for future reference. Primary cam chain tensioner was causing the issues.

Really??

How would it cause a 2000 rpm idle?

Really??

How would it cause a 2000 rpm idle?

Only on start up. Lack of chain tension was throwing engine out of time. Changed tensioner, new oil and its as smooth as silk again. Makes me love my Evos and Shovel even more!

How would it cause a 2000 rpm idle?

Only on start up. Lack of chain tension was throwing engine out of time. Changed tensioner, new oil and its as smooth as silk again. Makes me love my Evos and Shovel even more!

Throwing engine out of time? Ummm not sure about that one.

Hound dog ,,, take a pic of the fucking thing you replaced ,,, that will get us  all on the same page ,,,,,I'm getting a headache going from side to side of the engine ,,,,, Must say , it is an interesting situation you had happen !!!

How would it cause a 2000 rpm idle?

Only on start up. Lack of chain tension was throwing engine out of time. Changed tensioner, new oil and its as smooth as silk again. Makes me love my Evos and Shovel even more!

Throwing engine out of time? Ummm not sure about that one.

Thanks for the clarification Hound dog ,,,,