Fordmods Logo

el fairmont idle probs can anyone help 

 

Page 1 of 1 [ 11 posts ] 

 
 Post subject: el fairmont idle probs can anyone help
Posted: Mon Mar 17, 2008 11:24 pm 
Fordmods Newbie
Offline

Posts: 9

Joined: 1st Feb 2008

Location: perth
WA, Australia

when i put the car in gear the idle drops to around 400 rpm
i have fitted an au tickford xr6 head cam etc
with my standard ecu the idle drops to 600,the xr6 (el)ecu drops to 400
i have also bought and since sold an el fairmont ghia ecu as the car behaved the same
so i am lost :(
Top
 Profile  
 
 
Posted: Tue Mar 18, 2008 9:08 am 
Stock as a Rock
Offline

Age: 61

Posts: 156

Joined: 2nd Nov 2005

Ride: EA Fairmont

Location: Canberra
ACT, Australia

Hi There

When the car is warmed up, what rpm does it
idle at in Neutral and Park ??
Top
 Profile  
 
 
Posted: Tue Mar 18, 2008 9:59 am 
Smokin em up
Offline

Age: 36

Posts: 210

Joined: 14th May 2005

Location: Perth
WA, Australia

Pommie

600 is where it should be.
You have fitted a AU head to a EL engine.
Contry to commen beleif on this site it will cause problems. Like you would expect in any major engine change.

However this sounds like the XR Ecu cant controll the IAC. Or the TPS is out of alignment.

Have you run the car with the XR ecu in Diagnostics mode ?
Top
 Profile  
 
 
Posted: Tue Mar 18, 2008 8:42 pm 
Fordmods Newbie
Offline

Posts: 9

Joined: 1st Feb 2008

Location: perth
WA, Australia

hi when my car is in park it idles at around 750 ,but when i put it in drive it slowly drops down to just above 400 .
i am wondering could it be something to do with the auto?
Top
 Profile  
 
 
Posted: Tue Mar 18, 2008 9:06 pm 
Fordmods Newbie
Offline

Posts: 9

Joined: 1st Feb 2008

Location: perth
WA, Australia

gutza wrote:
Hi There

When the car is warmed up, what rpm does it
idle at in Neutral and Park ??


hi when my car is in park it idles at around 750 ,but when i put it in drive it slowly drops down to just above 400 .
i am wondering could it be something to do with the auto?
Top
 Profile  
 
 
Posted: Tue Mar 18, 2008 9:14 pm 
Fordmods Newbie
Offline

Posts: 9

Joined: 1st Feb 2008

Location: perth
WA, Australia

garsiph wrote:
Pommie

600 is where it should be.
You have fitted a AU head to a EL engine.
Contry to commen beleif on this site it will cause problems. Like you would expect in any major engine change.

However this sounds like the XR Ecu cant controll the IAC. Or the TPS is out of alignment.

Have you run the car with the XR ecu in Diagnostics mode ?


hi how do you run the diagnostic mode
Top
 Profile  
 
 
Posted: Tue Mar 18, 2008 9:23 pm 
Getting Side Ways
Offline

Posts: 6166

Joined: 8th May 2007

ok this is only an idea.....

disconnect the plug going to the Idle solenoid on top of the throttle body.

When you start the car it will not hold idle, so bump up the throttle body screw on the side till it holds idle at around 800rpm. Before you turn the screw, mark it so you know what position it was in before.

Now once it holds idle with the ISC disconnected put it in gear and see if it drops to 400 again, if it doesnt then you know the isc is too blame

Dont forget to turn the screw back to where it was and reconnect the isc plug
Top
 Profile  
 
 
Posted: Tue Mar 18, 2008 10:06 pm 
Fordmods Newbie
Offline

Posts: 9

Joined: 1st Feb 2008

Location: perth
WA, Australia

FordFairmont wrote:
ok this is only an idea.....

disconnect the plug going to the Idle solenoid on top of the throttle body.

When you start the car it will not hold idle, so bump up the throttle body screw on the side till it holds idle at around 800rpm. Before you turn the screw, mark it so you know what position it was in before.

Now once it holds idle with the ISC disconnected put it in gear and see if it drops to 400 again, if it doesnt then you know the isc is too blame

Dont forget to turn the screw back to where it was and reconnect the isc plug


hi i have changed the isc.i put on the au one they both acted the same
Top
 Profile  
 
 
Posted: Tue Mar 18, 2008 10:22 pm 
Smokin em up
Offline

Age: 36

Posts: 210

Joined: 14th May 2005

Location: Perth
WA, Australia

Short the left hand Diagnostic connectors top and bottom pins out then start the engine.
After a little while the engine will idle hunt. thats the isc test if after 5 mins you dont get a idle hunt somthings wrong with the output. It may not be the ISC valve you may have a damaged harness or stuffed ECU
Top
 Profile  
 
 
Posted: Tue Mar 18, 2008 10:52 pm 
Fordmods Newbie
Offline

Posts: 9

Joined: 1st Feb 2008

Location: perth
WA, Australia

garsiph wrote:
Short the left hand Diagnostic connectors top and bottom pins out then start the engine.
After a little while the engine will idle hunt. thats the isc test if after 5 mins you dont get a idle hunt somthings wrong with the output. It may not be the ISC valve you may have a damaged harness or stuffed ECU


i will give that a try tomorrow thanks
Top
 Profile  
 
 
Posted: Fri Mar 21, 2008 7:46 pm 
Fordmods Newbie
Offline

Posts: 9

Joined: 1st Feb 2008

Location: perth
WA, Australia

pommie wrote:
garsiph wrote:
Short the left hand Diagnostic connectors top and bottom pins out then start the engine.
After a little while the engine will idle hunt. thats the isc test if after 5 mins you dont get a idle hunt somthings wrong with the output. It may not be the ISC valve you may have a damaged harness or stuffed ECU


i will give that a try tomorrow thanks


hi there i tried that, it worked just fine cheers
Top
 Profile  
 
Display posts from previous:
Sort by  
 Page 1 of 1  [ 11 posts ] 

Who is online

Users browsing this forum: Google [Bot], Mangimalgabe and 20 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

 

 

It is currently Thu Dec 14, 2017 9:52 pm All times are UTC + 11 hours

 

 

(c)2014 Total Web Solutions Australia - Australian Web Hosting and Domain Names