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Focus 03 ST170 engine management light on
Hi - is there a common reason for the e/m light to just come on, was doing approx 4000rpm in third, and it came on
There is no misfire, temps and pressures are all ok, and everything sounds fine ............... fords want near on £100 to plug in and check , but was wondering if you can do like a scooby and check fault codes yourself for sensor etc??? If not ..... any pointers for anything to check that might clear this etc Much appreciated Ry |
yes there are common reasons for the light coming on...
....fucking LOADS :cry: no seriously, it could be a number of things. st170's have quite a list of common faults so the only thing to start with is read the fault codes. do you know anyone with a fault code reader or bluefin (as this can be used as a code reader)? |
Originally Posted by phil_focus
(Post 5175461)
yes there are common reasons for the light coming on...
....fucking LOADS :cry: no seriously, it could be a number of things. st170's have quite a list of common faults so the only thing to start with is read the fault codes. do you know anyone with a fault code reader or bluefin (as this can be used as a code reader)? Bloody thing, if this is gonna be a regular thing I will have to buy one myself, just weird how it came on, everything seems fine and wont go out Cheers Again mate |
Yep they do have a self diag built into the dash as any modern Ford does, to access you need to hold the trip button in and turn ignition key on simultaneously keeping the button pressed until a 'gauge sweep' will then be performed, at which point the millage display will disappear, keep pressing the trip button to cycle through the different modes (To which there is alot) IIRC it's the fifth or seventh option which is for DTC'S in any case this is what you should see on the display.
See if there are any codes thrown up here, it should be noted this is no substitute for a decent scanner nor will it show up faults like one would. Should have a letter followed by four digits, to revert just turn ignition off and on again. NB This will reset the millage trip, NOT millage. Martin |
Originally Posted by martysmartie
(Post 5175534)
Yep they do have a self diag built into the dash as any modern Ford does, to access you need to hold the trip button in and turn ignition key on simultaneously keeping the button pressed until a 'gauge sweep' will then be performed, at which point the millage display will disappear, keep pressing the trip button to cycle through the different modes (To which there is alot) IIRC it's the fifth or seventh option which is for DTC'S in any case this is what you should see on the display.
See if there are any codes thrown up here, it should be noted this is no substitute for a decent scanner nor will it show up faults like one would. Should have a letter followed by four digits, to revert just turn ignition off and on again. NB This will reset the millage trip, NOT millage. Martin Will have a nose tomorrow after work Thanks again Ry |
I had the same on my ST170 so bought myself a scanner off ebay for £15 and it worked and came up with a code. Then I put the code in Google and it came up with loads of problems. My garage found a small leak in a pipe, they taped it up the cars runs great, cheaper than £100 for the dealer to get the code.
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i wouldnt bother taking it to ford, a normal garage should be able to read fault codes easy. alternatively you could get a reader yourself for a lot less than £100.
you'll be after an EOBD/OBD2 compatible fault code reader. amazon might do them as they have lots of sources but a shop on ebay with good feedback and uk based might be easier. maybe see if said shops have their own websites. hope that helps and you can read the codes soon. once you have done, stick them up on here and we'll help you decipher them |
Its proberbly a lamber sensor mate, st170 eat them. If the car is running fine and if you want to clear it disconnect the battery for 5 mins and it will reset but i would get it checked 1st.
If it is lamber sensor dont buy from ford go on ebay.com in the USA and you can get both sensor for a fraction of the price. Hope this helps let me know how you get on or if you need any more help pm me. |
Originally Posted by martysmartie
(Post 5175534)
Yep they do have a self diag built into the dash as any modern Ford does, to access you need to hold the trip button in and turn ignition key on simultaneously keeping the button pressed until a 'gauge sweep' will then be performed, at which point the millage display will disappear, keep pressing the trip button to cycle through the different modes (To which there is alot) IIRC it's the fifth or seventh option which is for DTC'S in any case this is what you should see on the display.
See if there are any codes thrown up here, it should be noted this is no substitute for a decent scanner nor will it show up faults like one would. Should have a letter followed by four digits, to revert just turn ignition off and on again. NB This will reset the millage trip, NOT millage. Martin |
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Originally Posted by cossie1000
(Post 5175577)
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Originally Posted by phil_focus
(Post 5175559)
i wouldnt bother taking it to ford, a normal garage should be able to read fault codes easy. alternatively you could get a reader yourself for a lot less than £100.
you'll be after an EOBD/OBD2 compatible fault code reader. amazon might do them as they have lots of sources but a shop on ebay with good feedback and uk based might be easier. maybe see if said shops have their own websites. hope that helps and you can read the codes soon. once you have done, stick them up on here and we'll help you decipher them http://www.amazon.co.uk/Diagnostic-S...9251273&sr=1-6 |
Originally Posted by 2wdRyan
(Post 5175582)
found this one on amazon £24
http://www.amazon.co.uk/Diagnostic-Scanner-Code-Reader-MS300/dp/B0049DV4OA/ref=sr_1_6?s=electronics&ie=UTF8&qid=1289251273&sr =1-6 |
Originally Posted by cossie1000
(Post 5175588)
Got to be worth a go for that price :king:
I have a digital air/fuel ratio gauge wired into the lambda circuit and that is still reading 14:7 or 14:8 like pretty much always, at least im not in a panic to drive the car, so I think wait for this huckle berry to turn up and keep my fingers crossed its nothing to drastic ha ha |
Originally Posted by phil_focus
(Post 5175572)
i thought that only showed dash fault codes and not engine codes.
Martin |
Originally Posted by martysmartie
(Post 5175607)
You may well be right as I have heard people say that before, however I have never got a definitive answer?
Martin neither have i so i'm staying open to being corrected. :-) Ryan, seems to do the same as any other cheap scanner so worth a try at that price. |
[QUOTE=phil_focus;5175629]neither have i so i'm staying open to being corrected. :-)
Same here :) Martin |
Originally Posted by phil_focus
(Post 5175629)
neither have i so i'm staying open to being corrected. :-)
Ryan, seems to do the same as any other cheap scanner so worth a try at that price. Cheers for helping out buddy |
Have you just tried a reset of the ECU, I.E power down?
Martin |
Originally Posted by martysmartie
(Post 5175648)
Have you just tried a reset of the ECU, I.E power down?
Martin |
Thats right, it can't be that bad or the car would not be running well and you would be in LOS.
Martin |
Originally Posted by martysmartie
(Post 5175670)
Thats right, it can't be that bad or the car would not be running well and you would be in LOS.
Martin Cheers for your input tonight mate, i'll give the code reader a go and see what happens from there:grin: |
Originally Posted by 2wdRyan
(Post 5175645)
Well, I may as well give it a bash, should show the codes if nothing else, as previously said, got to be worth ago rather than pulling out 100 bob for the same result, then knowing my luck something else playing up two weeks later and back in the same boat again lol
Cheers for helping out buddy owning an st170 you are guaranteed another problem in a couple of months :cry: not a prob, we like to help. |
Originally Posted by cossie1000
(Post 5175567)
Its proberbly a lamber sensor mate, st170 eat them. If the car is running fine and if you want to clear it disconnect the battery for 5 mins and it will reset but i would get it checked 1st.
If it is lamber sensor dont buy from ford go on ebay.com in the USA and you can get both sensor for a fraction of the price. Hope this helps let me know how you get on or if you need any more help pm me.
Originally Posted by martysmartie
(Post 5175648)
Have you just tried a reset of the ECU, I.E power down?
Martin
Originally Posted by phil_focus
(Post 5175708)
owning an st170 you are guaranteed another problem in a couple of months :cry:
not a prob, we like to help. P0141 Heated O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 2) P0172 System Too Rich (Bank 1) P1518 Intake Manifold Runner Control (Stuck Open) And a missfire recorded ........... but never noticed one?????? So i'm guessing my IMRC has had it, causing things to have wrong fuel mix hence to rich and hot and causing missfire??????? If so, they aint cheap boo hoo :cry: |
with the heater circuit malfunction it sounds like you have a dead or dieing lamda sensor.
intake manifold very common. not sure whats broken, can be the mechanism or it can be a resistor or something inside the control unit which is a very cheap fix if you fancy taking it apart and getting the soldering iron out. cats2go sell lambda sensors at reasonable prices if that helps. |
Originally Posted by phil_focus
(Post 5181669)
with the heater circuit malfunction it sounds like you have a dead or dieing lamda sensor.
intake manifold very common. not sure whats broken, can be the mechanism or it can be a resistor or something inside the control unit which is a very cheap fix if you fancy taking it apart and getting the soldering iron out. cats2go sell lambda sensors at reasonable prices if that helps. so probly worth changing the lambda then, as the other chap said these eat them and like you said, not going to hurt to see if there is just a knackered small component that maplins can help with in the imrc :grin: Thanks for you help again .............. (speak to you soon lol ha ha) |
haha, ay be sooner than you think when the next problem occurs :cry:
there are 2 lambda sensors on the st170, pre cat and post cat. not sure what it means by bank 1 but i assume sensor 2 is post cat which just checks the operation of the cat. hopefully someone can clarify which one its on about. |
Originally Posted by phil_focus
(Post 5181796)
haha, ay be sooner than you think when the next problem occurs :cry:
there are 2 lambda sensors on the st170, pre cat and post cat. not sure what it means by bank 1 but i assume sensor 2 is post cat which just checks the operation of the cat. hopefully someone can clarify which one its on about. |
oh yeah DOH, blonde moment for me :cry:
if its just the heater part thats screwed but the rest of it works then i wouldnt worry about changing it yet as its only there to check the cat is working. sort the inlet out first, clear the fault codes and then see what happens. |
Hi Guys
New to this forum had my ST170 couple of months really pleased with it until this dreaded light eng /man light came on!!! had a problem were i thought i had a miss fire but only lasted a few seconds, looked on here for info as car was running fine, had to drive to Bangor Thursday to pick up my lad from Uni. on the way back home had a play down the A5 which was good and then noticed the light went out, i thinking it could be one the lambda sensor but to be on the safe side car is going back to garage Tuesday as still under warrantry, Tony |
Fault codes on board
I've used the cluster to read diagnostic codes and it picked up a speedometer sensor error so guess it can show engine codes!
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Originally Posted by James David
(Post 6741501)
I've used the cluster to read diagnostic codes and it picked up a speedometer sensor error so guess it can show engine codes!
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