rudds1   102 #277 Posted January 24, 2021 On 23/01/2021 at 16:14, charliewag said: I have a couple of minor but annoying issues with my 13 plate Astra and am looking for some advice. I keep getting a warning that the coolant level is low ( it's checked regularly and never needs topping up ). The other issue is that the temperature display shows between 28-30 degrees even though it's more like 3-4 degrees. Sounds like defective sender units on both items Share this post Link to post Share on other sites Share this content via...
Dardandec   32 #278 Posted January 25, 2021 (edited) On 23/01/2021 at 16:14, charliewag said: I have a couple of minor but annoying issues with my 13 plate Astra and am looking for some advice. I keep getting a warning that the coolant level is low ( it's checked regularly and never needs topping up ). The other issue is that the temperature display shows between 28-30 degrees even though it's more like 3-4 degrees. If the expansion tank is between max and min then there could be a fault with the level sensor, If my memory serves well. Some Astras did also need a sensor and expansion tank for this fault, but not sure on the era of this, maybe 2009/10? could be later. Also the the temperature gauge would not show 3 to 4 degrees, it would kick in at 30 degrees maybe. What temperature does it run at when it is up to temperature? Vauxhall's usually run at about 90 degrees when fully warmed up. Edited January 25, 2021 by Dardandec Share this post Link to post Share on other sites Share this content via...
charliewag   18 #279 Posted January 25, 2021 Sorry, I should have mentioned it's the outside temperature shown on the display unit, not the running temperature. Share this post Link to post Share on other sites Share this content via...
carosio   178 #280 Posted January 25, 2021 Is it showing that temp when the engine is cold? The sensor is usually fitted behind the front grill lowish down, and if it becomes unclipped it could touch the radiator. Share this post Link to post Share on other sites Share this content via...
Dardandec   32 #281 Posted January 25, 2021 6 hours ago, charliewag said: Sorry, I should have mentioned it's the outside temperature shown on the display unit, not the running temperature. Ahh that makes sense. 4 hours ago, carosio said: Is it showing that temp when the engine is cold? The sensor is usually fitted behind the front grill lowish down, and if it becomes unclipped it could touch the radiator. The outside temp sensor is also a common fault on Vauxhalls. You can pick genuine Vauxhall ones up on ebay, they are not expensive. Share this post Link to post Share on other sites Share this content via...
charliewag   18 #282 Posted January 26, 2021 Thanks for that, shouldn't be difficult to get sorted. Share this post Link to post Share on other sites Share this content via...
Jillybabes   10 #283 Posted March 17, 2021 I have a hyundai i10, failed mot today on emissions, what would cause this to happen? It was suggested that petrol or lack of use. I use everyday, travel at least 12 miles a day, not loads I know but I've never had this happen before. Share this post Link to post Share on other sites Share this content via...
spider1   11 #284 Posted March 17, 2021 (edited) Change air filter or take it out   needs  service   Edited March 17, 2021 by spider1 Share this post Link to post Share on other sites Share this content via...
geared   268 #285 Posted March 17, 2021 (edited) Lambda sensor faults can cause emission failure as well, a bunch of things can.  Needs investigation by a mechanic/garage. Edited March 17, 2021 by geared Share this post Link to post Share on other sites Share this content via...
Dardandec   32 #286 Posted March 17, 2021 3 hours ago, Jillybabes said: I have a hyundai i10, failed mot today on emissions, what would cause this to happen? It was suggested that petrol or lack of use. I use everyday, travel at least 12 miles a day, not loads I know but I've never had this happen before. If you have an emissions printout post the results for the first and second fast idle test and the idle test on here.  HC (Hydrocarbons) CO (Carbon Monoxide) Lambda  No need to post the tolerances just the actual values.  A High HC reading could be a misfire. A high CO reading could be an issue with the catalytic converter. A high Lambda reading could be a blowing exhaust.   Share this post Link to post Share on other sites Share this content via...
Jillybabes   10 #287 Posted March 18, 2021 Its been sorted now but it was the lambda reading, its passed now but thanks and I will get a service done Share this post Link to post Share on other sites Share this content via...