xe starting issues

[marc69]

Coolant temp sensor and Air flow meter... teh CTS is a really common fault - controls the ignition and fuelling based on engine temperature...

And I have no idea where Broadghost is getting these wild diagnoses from (head gasket?!)- but please ignore!

Thanks, the cts shouldn't be causing internittent starting problems should it? would have thought it would be more likely to overfule the car once it's hot, ie like running on choke?
AFM, I assume this lets air in would this be sitting on the wrong setting at ignition, therefore why when the car struggles to start, for a minute or so it idles far too high and unevenly?

Is the CTS on the manifold?
Where is the AFM?

[meritlover]

Thanks, the cts shouldn't be causing internittent starting problems should it? would have thought it would be more likely to overfule the car once it's hot, ie like running on choke?

AFM, I assume this lets air in would this be sitting on the wrong setting at ignition, therefore why when the car struggles to start, for a minute or so it idles far too high and unevenly?

that is true. Conversly however, it could have failed 'warm'

i posted resistance tables on here before so people could test the operation with a reisitance meter.

the AFM measures the inlet mass of air to the engine and uses it to calculate the required fuel. Normally a hot-wire these days, but the old bosch system on the GTE for example used a flapper arm- the more air, the more it displaced the flapper. its down stream of the air filter.

[marc69]

Today i spent some time on this,

The plugs are a brownish grey colour and look healthy so i assume the mixture is fine.

The AFM (if I was at the right bit) is like a sim card, I didn't wipe it or anything incase I damaged or contaminated it.

I don't know where the CTS is to look at that?

The car started fine, ran for about 30 miles, sat for an hour and then wouldn't start so.....

I changed the ignition module, no difference so it's not that.

I took a spark plug on a lead, turned it over, you could see the spark in broad daylight, so spark is there.

I then tried starting with my foot flat on the accelerator, it started straight away and ran fine......rememebring it gad only been turned a few times before.

Usually when it doesn't start it gets turned over a lot, then once it does go it struggles, could be with all the turning it is flooded?

Any more ideas?

[Will F]

It still could be any of the things I listed. Until you start swapping them, there's no point in keeping asking, when it could be one of those things..?

Have you got the EML wired in?

[marc69]

What is an EML?

I know nothing about injection/ecu cars clearly

[John]

"Engine management light"

[marc69]

"Engine management light"

oops , no there is no eml wired in as ar as I know.

[vx kev]

PM'D You with how to wire in your EML and how to get flash codes, should help you pinpoint the problem mate. Hopefully anyway

[marc69]

PM'D You with how to wire in your EML and how to get flash codes, should help you pinpoint the problem mate. Hopefully anyway

Yes got it thanks, may take me a few weeks to work up the courage to attempt it but I will! Thanks again.

[lee 16v]

The CTS is about £15 from vauxhall. They sit at the front of the engine on the left hand side where the water pipe goes into the head. Might be worth changing anyway if you plan on keeping the car.