Car wont run :(

[jbrady72]

Was out and about driving in my car for about 3 hours last night and it was fine...this morning I drove it about 15miles completely fine but as I was about to park up, it started spluttering and whenever I accelerated it spluttered and bogged down really badly. I limped into a park spot at tesco and turned it off and back on just to see and i was stationery, planted my foot hard down, it revved normally to 5000rpm, then spluttered and the revs slowly dropped with it spluttering occasionally until it hit 1000rpm , even though I still had my foot hard down, but it sounded bad so i took my foot off the accelerator.

Anyway, after doing some shopping, I came back and had to limp it home at 30mph as I couldnt build anymore speed up because it would just splutter and slow down and I didnt want it to stall.

I went to the scrappy in my mates car, got a TPS, fitted it....and its exactly the same So is it a case of me replacing a broken sensor with another broken one or is there anything else it could be?
Im guessing it could just be the Throttle Position Sensor still but has anyone else had this? But its not driveable in this state and I need it because its my daily car!

[stevo67]

Clean the idle control valve first and report back mate.

[Jigs2895]

Swear your car is always broken? Lol.

As above though, just go through the usual checks, ICV, coil pack, sensors etc..

[jbrady72]

Originally Posted by stevo67

Clean the idle control valve first and report back mate.

It feels more like a fuel starvation though, as generally the wider the throttle is open, the more it bogs and splutters?
ICV wouldn't affect that would it? Will try anyway though

[Mickswan]

Test your injectors

[jbrady72]

Originally Posted by Jigs2895

Swear your car is always broken? Lol.

As above though, just go through the usual checks, ICV, coil pack, sensors etc..

Has been running fine for 2months or so now! Thought I was on to a winning streak Changed coilpack as I had a spare in the garage which I know works and it was same, unplugged battery for an hour or so, reset the ICV, replaced TPS. Anything else?

[jbrady72]

Originally Posted by Mickswan

Test your injectors

How do i test them? But this was my next thing to check! I have a spare fuel rail and set of injectors in the garage so will swap them, just theyre a bit of a ball ache to swap so was trying not too haha!

[stevo67]

Originally Posted by jbrady72

It feels more like a fuel starvation though, as generally the wider the throttle is open, the more it bogs and splutters?
ICV wouldn't affect that would it? Will try anyway though

Fuel filter needing changing.

[jbrady72]

Originally Posted by stevo67

Fuel filter needing changing.

Changed it about 3 or 4 weeks ago!

[Gandi699]

How are injectors on a vtr hard to swap? Lol Takes 5 minutes.


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[jbrady72]

Originally Posted by Gandi699

How are injectors on a vtr hard to swap? Lol Takes 5 minutes.


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Just takes a while to prize them out and push the new ones in! Will do it though and see!

[jbrady72]

Ok so cleaned al sensors, had injectors off for a quick clean but al looks fine. Now car won't start at all...it does one half fire then just turns over.
The fuel rail is getting fuel, it's getting air, I've got 2 cool packs which I know work and ive tried both but no difference.



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[stevo67]

Check all of your connections,you may have missed a connector.

[jbrady72]

Originally Posted by stevo67

Check all of your connections,you may have missed a connector.

Checked all them several times over. All connected!


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[stevo67]

Disconnect battery for half an hr.

[Wee_monkey1987]

have you tried plugging the car into the OBD to get sensor values and codes? that may point in the right direction! - maybe worth checking the spark plug gaps and see if their firing correctly!

also is it difficult to start? or does it fire up first time

[jbrady72]

Already disconnected battery!
And not yet but will do it tonight! Car ran fine before, was just all of a sudden.
It used to start first time very quickly! But doesn't start at all now


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[stevo67]

Originally Posted by Wee_monkey1987

have you tried plugging the car into the OBD to get sensor values and codes? that may point in the right direction! - maybe worth checking the spark plug gaps and see if their firing correctly!

also is it difficult to start? or does it fire up first time

Don't think the codes will be recorded unless the eml is light up mate.

[Wee_monkey1987]

Originally Posted by stevo67

Don't think the codes will be recorded unless the eml is light up mate.

true but depending what software you have you can still read what the ecu is seeing from the sensors.

Could possibly be coolant temperature sensor aswell, but it is pretty random for it to suddenly go. Personally best bet is, as previously mentioned, check all connections, earths and sensors also double check all actuators.

My VTR did this a while back, parked it, put in reverse then it just suddenly bogged, after some playing round i worked out it was the ignition coil pack and £90 later problem solved haven't had a hitch since.

If it won't start i'd start by checking the major ecu sensors, map, tps, and crankshaft then go onto the coolant temperature sensor, lambda etc. Also have you tried starting it under WOT conditions?

[chompy]

I'd be tempted to say a fuel pump issue. Take the injectors out, stick some paper under them and try turn it over.

That will tell you if it is actually getting fuel into the cylinders.

Also, how is the fuel pressure? Press the valve on the fuel rail and it should spurt out at quite a rate.