Ford Sierra/Sapphire/RS500 Cosworth This forum is for discussion of all things pertaining to the Ford Sierra Cosworth.

Turbo boost pressure sensor where is it?

Thread Tools
 
Search this Thread
 
Old Jul 24, 2018 | 04:48 PM
  #1  
Russ6334's Avatar
Russ6334
Thread Starter
I'm Finding My Feet Here Now
 
Joined: Jun 2018
Posts: 121
Likes: 1
From: Plymouth
Default Turbo boost pressure sensor where is it?

hi all

still trying to get to bottom of why charge cooler pump won’t work, local engineer tuner has said the escorts were run off a boost sensor on the inlet manifold

does anyone know which one it is?

A or B or neither??

I’ll call this one A
I’ll call this one B
Reply
Old Jul 24, 2018 | 04:51 PM
  #2  
costina's Avatar
costina
Live long and prosper!!
iTrader: (1)
 
Joined: Aug 2005
Posts: 9,158
Likes: 373
From: area 51
Default

Top is idle speed control valve
bottom is air charge temp sensor.

Boost is controlled on a std escos via the lecktron valve located at the front above intercooler.

Reply
Old Jul 24, 2018 | 04:53 PM
  #3  
costina's Avatar
costina
Live long and prosper!!
iTrader: (1)
 
Joined: Aug 2005
Posts: 9,158
Likes: 373
From: area 51
Default

Don't the charge cooler on a escos run all the time?

If is was me I would run it when engine is running.
Reply
Old Jul 24, 2018 | 04:57 PM
  #4  
Mark Shead's Avatar
Mark Shead
PassionFord Post Whore!!
 
Joined: Jun 2003
Posts: 5,472
Likes: 223
From: Marlow Bucks
Default

Please fix your bodged map sensor pipe before you blow it up.

Mark
Reply
Old Jul 24, 2018 | 04:58 PM
  #5  
Mark Shead's Avatar
Mark Shead
PassionFord Post Whore!!
 
Joined: Jun 2003
Posts: 5,472
Likes: 223
From: Marlow Bucks
Default

Go to the pump and follow the wires back.

Mark
Reply
Old Jul 24, 2018 | 05:01 PM
  #6  
costina's Avatar
costina
Live long and prosper!!
iTrader: (1)
 
Joined: Aug 2005
Posts: 9,158
Likes: 373
From: area 51
Default

Originally Posted by Mark Shead
Please fix your bodged map sensor pipe before you blow it up.

Mark
Good call.

Cannot remember the last time I see a escos with the std charge cooler set up. And why did ford put it on the hot side?
Reply
Old Jul 24, 2018 | 05:20 PM
  #7  
Russ6334's Avatar
Russ6334
Thread Starter
I'm Finding My Feet Here Now
 
Joined: Jun 2018
Posts: 121
Likes: 1
From: Plymouth
Default

Originally Posted by Mark Shead
Please fix your bodged map sensor pipe before you blow it up.

Mark
mark impossible to do it goes to a relay and then into the loom which is covered so can’t find it but looks like CORTINA has identified it for me! Thanks

also map sensor? Are you talk about the tie wraps on the black hose? Can you id what you mean so I can rectify thanks

russ
Reply
Old Jul 24, 2018 | 05:27 PM
  #8  
Adam-M's Avatar
Adam-M
PassionFord Post Troll
 
Joined: Feb 2014
Posts: 3,120
Likes: 316
From: Scotland
Default

Originally Posted by Russ6334


mark impossible to do it goes to a relay and then into the loom which is covered so can’t find it but looks like CORTINA has identified it for me! Thanks

also map sensor? Are you talk about the tie wraps on the black hose? Can you id what you mean so I can rectify thanks

russ
The big split on the hose!
Reply
Old Jul 24, 2018 | 05:28 PM
  #9  
Russ6334's Avatar
Russ6334
Thread Starter
I'm Finding My Feet Here Now
 
Joined: Jun 2018
Posts: 121
Likes: 1
From: Plymouth
Default

Originally Posted by Adam-M
The big split on the hose!
you’ve sharper eyes than me!

thanks
Reply
Old Jul 24, 2018 | 06:29 PM
  #10  
costina's Avatar
costina
Live long and prosper!!
iTrader: (1)
 
Joined: Aug 2005
Posts: 9,158
Likes: 373
From: area 51
Default


Reply
Old Jul 24, 2018 | 06:57 PM
  #11  
Mark Shead's Avatar
Mark Shead
PassionFord Post Whore!!
 
Joined: Jun 2003
Posts: 5,472
Likes: 223
From: Marlow Bucks
Default

Originally Posted by Russ6334


mark impossible to do it goes to a relay and then into the loom which is covered so can’t find it but looks like CORTINA has identified it for me! Thanks

also map sensor? Are you talk about the tie wraps on the black hose? Can you id what you mean so I can rectify thanks

russ
Stop messing around with what you have start again.
Buy a 7psi pressure switch wire to new relay and have it coming on with boost. Or just wire to switch and have on all the time.
If you have a good quality pump run it all the time if it was the cheap crap type they used to sell have it on pressure.

Mark
Reply
Old Jul 24, 2018 | 07:00 PM
  #12  
Russ6334's Avatar
Russ6334
Thread Starter
I'm Finding My Feet Here Now
 
Joined: Jun 2018
Posts: 121
Likes: 1
From: Plymouth
Default

Originally Posted by Mark Shead
Stop messing around with what you have start again.
Buy a 7psi pressure switch wire to new relay and have it coming on with boost. Or just wire to switch and have on all the time.
If you have a good quality pump run it all the time if it was the cheap crap type they used to sell have it on pressure.

Mark
just want to get what’s fitted working, Do you know what psi the standard is? And more importantly is it wired to anything else? Ie Ecu or something?

i suspect the original is faulty as it’s a new pump and new relay
Reply
Old Jul 24, 2018 | 07:16 PM
  #13  
Mark Shead's Avatar
Mark Shead
PassionFord Post Whore!!
 
Joined: Jun 2003
Posts: 5,472
Likes: 223
From: Marlow Bucks
Default

Originally Posted by Russ6334


just want to get what’s fitted working, Do you know what psi the standard is? And more importantly is it wired to anything else? Ie Ecu or something?

i suspect the original is faulty as it’s a new pump and new relay
When I used to fit them the pressure switch turned on at next to nothing. So use anything above 1psi.

Mark
Reply
Old Jul 24, 2018 | 07:37 PM
  #14  
Russ6334's Avatar
Russ6334
Thread Starter
I'm Finding My Feet Here Now
 
Joined: Jun 2018
Posts: 121
Likes: 1
From: Plymouth
Default

1psi???!!!!?????

yeah it’s defiantly fooked then! Car isn’t standard and it never comes on and all contacts clean and everything else new!

last job will be to take it out wire it to a hose and compressor and measure resistance

if that fails I’ll get a new one
Reply
Old Jul 24, 2018 | 08:13 PM
  #15  
grcossie's Avatar
grcossie
I've found that life I needed.. It's HERE!!
15 Year Member
Liked
 
Joined: May 2007
Posts: 1,264
Likes: 21
From: norway
Default

If you have an engine monitor, like secs or similar, they can be used to control charge cooler pump
Reply
Old Jul 24, 2018 | 09:41 PM
  #16  
Turbosystems's Avatar
Turbosystems
Super Moderator
iTrader: (5)
 
Joined: May 2003
Posts: 12,849
Likes: 50
From: home
Default

We used to control the pumps via the weber ECU with throttle angle and charge air activation points
Reply
Old Jul 25, 2018 | 02:44 PM
  #17  
Russ6334's Avatar
Russ6334
Thread Starter
I'm Finding My Feet Here Now
 
Joined: Jun 2018
Posts: 121
Likes: 1
From: Plymouth
Default

Originally Posted by Mark Shead
When I used to fit them the pressure switch turned on at next to nothing. So use anything above 1psi.

Mark
mark I’m assuming I can put a small amount of pressure against the sensor and measure the Resistance to prove if it’s working?

i suspect it’s not fired from here though as there is continuity between the relay and one side of the sensor which I assume is earth but not the other (measured on the wire) which I suspect means it isn’t linked to the relay and thus fired from something else?

r
Reply
Old Jul 25, 2018 | 05:58 PM
  #18  
costina's Avatar
costina
Live long and prosper!!
iTrader: (1)
 
Joined: Aug 2005
Posts: 9,158
Likes: 373
From: area 51
Default

Got to ask what car is it ?
Reply
Old Jul 25, 2018 | 06:48 PM
  #19  
Russ6334's Avatar
Russ6334
Thread Starter
I'm Finding My Feet Here Now
 
Joined: Jun 2018
Posts: 121
Likes: 1
From: Plymouth
Default

Originally Posted by costina
Got to ask what car is it ?
sierra saff on a k plate
Reply
Old Jul 25, 2018 | 06:53 PM
  #20  
costina's Avatar
costina
Live long and prosper!!
iTrader: (1)
 
Joined: Aug 2005
Posts: 9,158
Likes: 373
From: area 51
Default

Ah that makes sense.

Just rewire the system with a new sensor set as Mark as suggested or with ignition on.

Sounds to me it's been retro fitted and i would start again.
Reply
Old Jul 25, 2018 | 06:57 PM
  #21  
Russ6334's Avatar
Russ6334
Thread Starter
I'm Finding My Feet Here Now
 
Joined: Jun 2018
Posts: 121
Likes: 1
From: Plymouth
Default

Originally Posted by costina
Ah that makes sense.

Just rewire the system with a new sensor set as Mark as suggested or with ignition on.

Sounds to me it's been retro fitted and i would start again.
yeah it is a retro fit, what worries me is having it on ignition as the pump is massive! Could empty a swimming pool in 15m I bet! Haha

pumps 14 ltrs a min on a system that holds about 3 litres!
Reply
Old Jul 25, 2018 | 08:37 PM
  #22  
costina's Avatar
costina
Live long and prosper!!
iTrader: (1)
 
Joined: Aug 2005
Posts: 9,158
Likes: 373
From: area 51
Default

Yes I understand but it circulated system.

Your will be only running the relay trigger off the ignition.

As long as the charge rad is working ok it should cool enough.

Depending on what you are doing why don't you ditch the charge cooler and go for a 500 size intercooler?
Reply
Old Jul 25, 2018 | 08:39 PM
  #23  
Russ6334's Avatar
Russ6334
Thread Starter
I'm Finding My Feet Here Now
 
Joined: Jun 2018
Posts: 121
Likes: 1
From: Plymouth
Default

Originally Posted by costina
Yes I understand but it circulated system.

Your will be only running the relay trigger off the ignition.

As long as the charge rad is working ok it should cool enough.

Depending on what you are doing why don't you ditch the charge cooler and go for a 500 size intercooler?
it’s because I just wanted to get what’s fitted working, I bought it as an investment it only comes out on hot days and I’d be surprised if it did 500 miles a year!

not keen on spending thousands on upgrades when it won’t get used
Reply
Old Aug 2, 2018 | 06:56 AM
  #24  
Russ6334's Avatar
Russ6334
Thread Starter
I'm Finding My Feet Here Now
 
Joined: Jun 2018
Posts: 121
Likes: 1
From: Plymouth
Default

Well I bought a new temp sensor and both new and old don’t measure anything?

i stuck them on bbq at 150c and measured across contacts and both read open circuit never closing

am I doing something wrong here?
Reply
Old Aug 2, 2018 | 08:36 AM
  #25  
grcossie's Avatar
grcossie
I've found that life I needed.. It's HERE!!
15 Year Member
Liked
 
Joined: May 2007
Posts: 1,264
Likes: 21
From: norway
Default

Temp sensor is not a switch, just a variable resistance
You will find the scale here http://bigturbo.co.uk/

Last edited by grcossie; Aug 2, 2018 at 08:43 AM.
Reply
Old Aug 2, 2018 | 09:41 AM
  #26  
Russ6334's Avatar
Russ6334
Thread Starter
I'm Finding My Feet Here Now
 
Joined: Jun 2018
Posts: 121
Likes: 1
From: Plymouth
Default

Originally Posted by grcossie
Temp sensor is not a switch, just a variable resistance
You will find the scale here http://bigturbo.co.uk/
thats all very well but the resistance doesn’t change on new or old??

am I measuring right? Across the two contacts and heating the item up it is always open circuit never changes resistance
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
M K
General Car Related Discussion.
25
Jun 17, 2015 09:51 PM
gabbo
Ford Sierra/Sapphire/RS500 Cosworth
7
Oct 27, 2013 08:36 PM
madhead rs1600i
Ford Escort RS Turbo
1
Jul 17, 2011 10:30 PM
infinicar
Ford Escort RS Cosworth
5
May 13, 2006 01:46 PM




All times are GMT. The time now is 09:30 AM.