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Turbo boost pressure sensor where is it?

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Old 24-07-2018, 04:48 PM
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Russ6334
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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
Old 24-07-2018, 04:51 PM
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costina
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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.

Old 24-07-2018, 04:53 PM
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costina
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Don't the charge cooler on a escos run all the time?

If is was me I would run it when engine is running.
Old 24-07-2018, 04:57 PM
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Mark Shead
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Please fix your bodged map sensor pipe before you blow it up.

Mark
Old 24-07-2018, 04:58 PM
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Go to the pump and follow the wires back.

Mark
Old 24-07-2018, 05:01 PM
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costina
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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?
Old 24-07-2018, 05:20 PM
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Russ6334
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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

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Old 24-07-2018, 05:27 PM
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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!
Old 24-07-2018, 05:28 PM
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Originally Posted by Adam-M
The big split on the hose!
you’ve sharper eyes than me!

thanks
Old 24-07-2018, 06:29 PM
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Old 24-07-2018, 06:57 PM
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Mark Shead
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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
Old 24-07-2018, 07:00 PM
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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
Old 24-07-2018, 07:16 PM
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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
Old 24-07-2018, 07:37 PM
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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
Old 24-07-2018, 08:13 PM
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If you have an engine monitor, like secs or similar, they can be used to control charge cooler pump
Old 24-07-2018, 09:41 PM
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We used to control the pumps via the weber ECU with throttle angle and charge air activation points
Old 25-07-2018, 02:44 PM
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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
Old 25-07-2018, 05:58 PM
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Got to ask what car is it ?
Old 25-07-2018, 06:48 PM
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Originally Posted by costina
Got to ask what car is it ?
sierra saff on a k plate
Old 25-07-2018, 06:53 PM
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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.
Old 25-07-2018, 06:57 PM
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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!
Old 25-07-2018, 08:37 PM
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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?
Old 25-07-2018, 08:39 PM
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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
Old 02-08-2018, 06:56 AM
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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?
Old 02-08-2018, 08:36 AM
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Temp sensor is not a switch, just a variable resistance
You will find the scale here http://bigturbo.co.uk/

Last edited by grcossie; 02-08-2018 at 08:43 AM.
Old 02-08-2018, 09:41 AM
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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
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