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Engine Cuts when warm
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TOPIC: Engine Cuts when warm
#58351
Engine Cuts when warm 7 Years ago Karma: 3
Ok it seems that if my car is ran for a while and the temperature raises to the half way mark as normal it seems to like to die out once the clutch is pressed in. it then turns over but doesnt start unless i hit the keyfob and it will then start.

I was thinking it was the Engine Compartment Fan not working which is causing the engine or the bay itself to get too warm and causing it to cut out? The light would come on every now and then and i think the relay has gone but i cant seem to find one on ebay.

Can be a bit hesitant when driving but other than that it drives perfect.

any ideas?
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#58357
Re: Engine Cuts when warm 7 Years ago Karma: 12
Have you checked the ecu for error codes?

If you disconnect the sensor on the engine bay lid it will come on automatically when the ignition is on. That way you can check if its working or not. I doubt it that the fan is your problem though

When ignition coils are on there way out they can have issues when warm so id check that if i were you. Also id check your air intake sensor-if ya have one.

And also your ecu temp sensor.

If your also having hesitation issues id check all your ignition components. Leads, plugs, dizzy cap, rotor and ignitor.
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#58358
Re: Engine Cuts when warm 7 Years ago Karma: 129
Exhaust sensor maybe did you do a diagnostic test on it to see what error codes its putting up ?
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#58370
Re: Engine Cuts when warm 7 Years ago Karma: 3
how do i carry out a diagnostics test??

i disconnected the sensor to see if the little side fan came on but it didn't had to change alot of relays recently which is why it makes me think the relay is gone and not fanning the air into the engine bay.

i only drive it from home to work which is a 5 minute drive and back so i didnt notice it until i had to take it for a drive the other day
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#58372
Re: Engine Cuts when warm 7 Years ago Karma: 12
Bubba wrote:
how do i carry out a diagnostics test??

i disconnected the sensor to see if the little side fan came on but it didn't had to change alot of relays recently which is why it makes me think the relay is gone and not fanning the air into the engine bay.

i only drive it from home to work which is a 5 minute drive and back so i didnt notice it until i had to take it for a drive the other day


You need to get a paperclip and bridge te1 and e1 terminals in the diagnostic port which is attached to the drivers side of engine bay. If you lift the lid on the port and look on the underside there will be a little diagram that will tell you where te1 and e1 are.

The check engine light on the dash will start to flash. You then need to count the flashes and that will identify which, if any error codes are stored.

Just eg a code 42 would be four flashes, then a pause and then 2 flashes etc etc.

If its just a constant flash then there are no error codes stored.

Then just do a search on the web to find what the error codes mean.
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#58384
Re: Engine Cuts when warm 7 Years ago Karma: 3
thanks for that ill try this tonight
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#58812
Re: Engine Cuts when warm 6 Years, 11 Months ago Karma: 3
Changed Relay for the vent in the rear fusebox ... still no joy but i did notice that when plugging the relay in that it switched the fan on(Sensor Disconnected) but once fully plugged it it didnt work.

Thinking it could be a connection so was thinking of getting the whole read fuse box from mr mr2 and try that and see. have been driving around in the warm weather and the read engine compartment light would come on when driving long distance but no power loose or engine cut out.

thought id ask here first before getting a proper diagnostics test done with the mobile mechanic.
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#58813
Re: Engine Cuts when warm 6 Years, 11 Months ago Karma: 213
Did you check the error codes ?

No point paying a mechanic to do it when you can spend 5 mins and do it for free.

Guide below

stephenmason.com/cars/mr2abscode.html
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#59532
Re: Engine Cuts when warm 6 Years, 10 Months ago Karma: 3
fixed the light coming on and the side vent fan.

Cars cutting out now when its warming up, was driving it down the road today at around 3000rpm and the thing started coughing and spluttering off a cylinder and died on the road tuck me ages to get it started and even then it was off a cylinder.

Checked distributor cap and plugs the other night cap looked grand and so did the plugs. seems to cut out while its warming up and at the quarter mark. is there any recommendations? was going to try a new coil and leads but dont want to do this and it not be them.

As soon as its fixed it up for sale .. actually regretting getting a 2
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#59536
Re: Engine Cuts when warm 6 Years, 10 Months ago Karma: 137
Which version do you have, n/a or turbo sw20 ?
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#59539
Re: Engine Cuts when warm 6 Years, 10 Months ago Karma: 3
n/a sw20
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#59541
Re: Engine Cuts when warm 6 Years, 10 Months ago Karma: 3
tried the diagnostics test there and the P/S and ABS just both kept flashing stopped counting at 30 lol no breaks or nothing was just flash flash flash.

we are thinking now its the choke as the choke stays on when the cars eventually warm and then dies out but doesnt when we hold the choke off. choke engages and disengages with the ignition but stays engaged when the engine is running. im thinking it could maybe be the thermo for it?
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#59545
Re: Engine Cuts when warm 6 Years, 10 Months ago Karma: 154
Have you checked your alternator Bubba?
If its not holding charge properly it can cause higher idle and eventually cut out on you.
Was there any smell of burning or anything when the car cut out on you?
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#59559
Re: Engine Cuts when warm 6 Years, 10 Months ago Karma: 3
no smell of burning and the battery gauge shows proper power like .. will drive gran for the first few mins then run a bit lumpy then once its warmed up to the half way point shes grand then.

it happened after the gym today and wouldnt start outside centre with a pile of cars behind me trying to go at the green light.

going to check in the morning for leaks in the air pipes as we changed the started recently also so maybe something split when taking out or installing or else we forgot to hook something up again with the AFM
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#59578
Re: Engine Cuts when warm 6 Years, 10 Months ago Karma: 3
no leaks but seems the air flow wasn't plugged in so i have taken off the filter and put the original box on along with plugging it into the air flow. seems the air flow was never plugged in though so don't know if this will help going to run it when it cools down to check.

seems to be over fueling as it will die out and when i try to start it will run lumpy and off a cylinder once it starts then when you rev a few times it goes away
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#59597
Re: Engine Cuts when warm 6 Years, 10 Months ago Karma: 3
not AFM

went today and got a new coil, distributor cap and leads, plugs and a new thermostat for the choke. fingers crossed
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#59603
Re: Engine Cuts when warm 6 Years, 10 Months ago Karma: 3
did proper diagnostics and engine management light showed up 24 which is air intake temp sensor.

thing wasnt connected before hand and was today so dont know why..

car is still cutting while warming up but running grand when actually warm
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#59964
Re: Engine Cuts when warm 6 Years, 10 Months ago Karma: 3
FIXED And up for sale she goes lol

Turned out to be a little sensor just
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#59969
Re: Engine Cuts when warm 6 Years, 10 Months ago Karma: 12
What sensor was it, just out of interest.
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#59970
Re: Engine Cuts when warm 6 Years, 10 Months ago Karma: 3
Air Intake Temp Sensor was changed along with a sensor behind the manifold i think.

Left it in with the mechanic and told him to give it what ever it needed just. He fell in love with it but already has a red mr2 lol says mines drove alot better than his so pleased with that lol
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