How to fix it?
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Because advice is honestly and freely given in this technical section, much of it will be amateur experienced based, so any information is given in good faith and is not guaranteed as correct.
Not many rules really, this board being aimed at technical issues, it shouldn't fall foul (hopefully) of some of the more personal issues that can affect forums.
Rule 1 - Is that you need to think very carefully before posting anything technical or asking anything technical relating to the security system of the car - See 'Security Issues' sticky for more info.
Rule 2 - We (MGF Register) do not support copyright infringement and therefore references to CD ROM, PDF versions or paper copies of the workshop manual (for instance) should not be posted on the forum. We don't want to get into trouble and we'd rather sell you a genuine hard copy through our Regalia shop anyway!
Because advice is honestly and freely given in this technical section, much of it will be amateur experienced based, so any information is given in good faith and is not guaranteed as correct.
How to fix it?
I'm experiencing some difficulty starting my MGF TF VVC 1.8 from the year 2000, especially first thing in the morning. Despite having a full service conducted just 8 weeks ago, the car struggles to start, often coughing, spluttering, and even cutting out. Typically, it takes a second or usually a third try, with a bit of revving, before it finally starts. I've noticed that until the engine warms up, the car feels somewhat unreliable, particularly when approaching a stop like at a junction. However, after warming up, it runs smoothly for the rest of the day. Does anyone have any insights or suggestions on what might be causing this and how to fix it?
Re: How to fix it?
It sounds like the ECU doesn't 'know' that the engine is cold. I'd start by changing the ECU temperature sender. On my '96 car this is the brown one, the blue one drives the temperature gauge but others will need to confirm if this is the case for a 2000 car.. Both sensors are only 10-15 pounds.
With the engine cover removed this is a very easy job though it might be worth soaking them in penetrating oil beforehand, you may possibly be able to do this with the grille in the boot removed.
With the engine cover removed this is a very easy job though it might be worth soaking them in penetrating oil beforehand, you may possibly be able to do this with the grille in the boot removed.
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Chris Tideswell
- Posts: 829
- Joined: Mon Oct 08, 2007 5:58 pm
- MGF Register Region: Midlands
- Model of Car: TF 135
- Location: Shepshed Leicestershire
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Re: How to fix it?
It does sound very much like the ECU coolant temperature sensor.
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EllsoJo
- Posts: 78
- Joined: Thu Apr 28, 2022 6:26 pm
- MGF Register Region: Devon & Cornwall
- Model of Car: MGTF135 (2002)
- Location: Rawridge EX14 9PT
Re: How to fix it?
That make sense to me, too, (not that my opinion should count for much!)Chris Tideswell wrote: ↑Wed May 01, 2024 8:57 amIt does sound very much like the ECU coolant temperature sensor.
In case you are not sure which sensor is the one the ECU is looking at, this picture might help:
- Oil & water sensor positions