Any Mechanics out there?

[itsme]

Haha, ok, im not THAT bad!! I do know a little bit about cars, cause i have some common sense. However, im driving a pretty high spec car and i'm way out my depth when it comes to the cutting out problem. Im hoping it's something i can solve fairly cheaply.

Bodhi

Na I know your not that bad... I am only telling a true story. Yes you are driving a high spec car... I have worked and solved problems on VERY high spec vehicles Including RR silver cloud etc: Aston martin DBs, Lamborghini,Jaguar Maserati,are very high spec: But if you drive a high spec you pay high prices and thats a fact.
I am just trying to save you money. If it is the sensor it can be fixed for a relatively low cost.

 

[crazylegs]

But if you drive a high spec you pay high prices and thats a fact.
I am just trying to save you money.

Never a truer word said...

 

[bodhi]

I am just trying to save you money. If it is the sensor it can be fixed for a relatively low cost.

Absolutely, and i appreciate it very much!!

I've cancelled my appointment tomorrow at the garage, im going to drive it to edinburgh on wednesday and see how it goes, if it cuts out i'll take it in to get looked at.

Bodhi

 

[ChristopherP]

Stepper Motors should be able to be cleaned up pretty easy yourself for free...

 

[itsme]

Stepper Motors should be able to be cleaned up pretty easy yourself for free...

Uh! what! who said that No chris I doubt it would be the stepper motor.
I think it is the speed controler [not 100% sure mind you] a speed controler is somewhat like a teperature gauge, if it is faulty it will give false information> thus the engine will cut out with a faulty speed controller, as with a faulty teperature gauge the cooling fan will come into opperation either to soon or to late and BANG > new engine.

 

[Abarbarian]

Absolutely, and i appreciate it very much!!

I've cancelled my appointment tomorrow at the garage, im going to drive it to edinburgh on wednesday and see how it goes, if it cuts out i'll take it in to get looked at.

Bodhi

Set of early an if you break down call out the AA and they may be able to find the fault for free , mebbes even fix it for the cost of the parts .

 

[bodhi]

Good thinking Abarbarian!! lol.

Itsme, just to let you know, i was out in it today and just driving around town, i was coming up to some lights and i put it in tiptronic and it changed down 4,3,2,1 as you would expect!! Doesn't do it in automatic though.

Im going to drive it to Edinburgh tomorrow night so i'll report on that!

If anyone lives near a roundabout between York and Edinburgh, i might pop in for a cuppa on the way!!

 

[itsme]

Good thinking Abarbarian!! lol.

Itsme, just to let you know, i was out in it today and just driving around town, i was coming up to some lights and i put it in tiptronic and it changed down 4,3,2,1 as you would expect!! Doesn't do it in automatic though.

Im going to drive it to Edinburgh tomorrow night so i'll report on that!

If anyone lives near a roundabout between York and Edinburgh, i might pop in for a cuppa on the way!!

well it should also do it in auto as well as triptronic so I believe the problem lay with the speed sensor? have you had it checked by an auto gear box expert [one that deals with auto boxes only] he should be able to tell you instantly, it is a simple procedure as he will bypass the electrics and get straight to the functionality of the offending culprit.

 

[pancho]

The stalling will almost certainly the idle speed control valve, more commonly known as the stepper motor. It can be cleaned but often a replacement is the only solution. Once fitted, the new ISCV sometimes needs to go through a setting up procedure for the tickover to stabilise. New OE spec units are available for about £90 from specialists or £300 plus from dealer.

With regard to the FTO gearbox, it is not unusual for them to 'miss' out second gear. It has a limited 'learning' capability and the change points adjust to your style of driving. To reset the change points then disconnect the battery for a few minutes.

If the speedo has been modified electronically to read MPH, then this can throw a fault code on the vehicle diagnostics when in fact there is no fault.

FTOs are generally very reliable, with only one or two minor failings. My experience is that a lot of failures are often as a result of poor maintenance.


Hope this helps.

 

[bodhi]

Cheers Pancho, we've already talked a lot about the stepper motor and i think ruled it out. Although im no mechanic so i dont really know.

Just to let you know Itsme, i drove to Edinburgh last night and while it doesnt go down to second gear at all, it didn't cut out. It's strange.

 

[itsme]

while it doesnt go down to second gear at all, it didn't cut out. It's strange.

Well its ok not going into 2nd dont worry about that. as I told you earlier it is really hard to find a fault unless it happens whilst on test and that is a pain in the ass... Stepper I really doubt that is the problem.. I would bet on the speed controller or wiring to being faulty..... as for the revs if they were to high/low you would know soon enough...

 

[pancho]

Cheers Pancho, we've already talked a lot about the stepper motor and i think ruled it out. Although im no mechanic so i dont really know.

Just to let you know Itsme, i drove to Edinburgh last night and while it doesnt go down to second gear at all, it didn't cut out. It's strange.

I have 8 years professional experience of Japanese imports and FTOs in particular. As you have found from other message boards, stalling and erratic tickover are not uncommon. Of course there can be a number of reasons for this, but from my experience, 9 times out of 10 it is the stepper motor. Other areas to investigate are the wiring loom to the stepper motor, TPS (throttle position sensor) and the throttle body itself.

With regard to the auto transmission - don't forget it needs a fluid and filter change every 40,000kms.

 

[bodhi]

Well, im back from Edinburgh!!

My car cut out about 3 times, one was really bad, was crawling down the motorway around Newcastle about 10-15mph and it stalled, was still moving though so had to hazard light it and then come to a stop so i could switch off and back on again, real pain in the ass.

It only stalled in automatic, when i drove it in tiptronic and changed down to 2nd gear myself it was fine. I don't know much about cars, but the speed sensor would seem pretty logical (to me anyway! lol).

Pancho, i didn't mean to imply you didn't know what you were talking about at all, i appreciate all the help i can get. It's just that i've been out with the Mitsubishi mechanic and the computer plugged in, and the only fault code that was reported was the speed sensor. I asked him at the time if it could be the stepper motor and he said it was stepping up and down fine.

He said it was either the speed sensor (as the fault code said), the ECU or the wiring between the two.

Thanks guys.

Bodhi

 

[pancho]

Well, im back from Edinburgh!!

My car cut out about 3 times, one was really bad, was crawling down the motorway around Newcastle about 10-15mph and it stalled, was still moving though so had to hazard light it and then come to a stop so i could switch off and back on again, real pain in the ass.

It only stalled in automatic, when i drove it in tiptronic and changed down to 2nd gear myself it was fine. I don't know much about cars, but the speed sensor would seem pretty logical (to me anyway! lol).

Pancho, i didn't mean to imply you didn't know what you were talking about at all, i appreciate all the help i can get. It's just that i've been out with the Mitsubishi mechanic and the computer plugged in, and the only fault code that was reported was the speed sensor. I asked him at the time if it could be the stepper motor and he said it was stepping up and down fine.

He said it was either the speed sensor (as the fault code said), the ECU or the wiring between the two.

Thanks guys.

Bodhi

No problem.

Like I said in an earlier post, system diagnosis is not perfect.

If your car has an electronic kph to mph conversion fitted (if the original 180 kph speedo face is retained but reads in mph - then it has. If you have a 120mph speedo dial face or if you have the original 180kph dial which records in kms - then it hasn't) then a diagnostic check can throw up a fault which doesn't actually exist. It is simply detecting a non-standard part.


The fact that it doesn't stall in tiptronic mode is interesting.
On reflection there are a couple of other speed sensors, input and output, on the tiptronic gearbox which could possibly give rise to your symptoms if faulty. I'm not sure how deep the diagnosis goes or if it can identify particular sensors. If you could get me the fault code, I may be able to help further.

 

[bodhi]

Cheers Pancho, between you and Itsme i may get to the bottom of this!! haha.

The Mitsubishi mechanic said the only fault code was speed sensor (i think it's code 24 or 26, but thats just from my own searching on the internet). He said most mitsubishi's have speed sensors on all four wheels as part of the ABS, but the FTO just has one which is part of the gearbox.

Im not sure if i have the electronic kph to mph convertor, i'll have a look tonight for you.

Nope, doesnt stall in tiptronic because i take it down to 2nd gear and that seems to solve it, but it doesnt go from 3rd to 2nd at all in automatic so i think it's just stalling as it would if you slowed right down in 3rd gear in a manual car? Maybe not, i dont know enough but it seems logical.

 

[pancho]

Cheers Pancho, between you and Itsme i may get to the bottom of this!! haha.

The Mitsubishi mechanic said the only fault code was speed sensor (i think it's code 24 or 26, but thats just from my own searching on the internet). He said most mitsubishi's have speed sensors on all four wheels as part of the ABS, but the FTO just has one which is part of the gearbox.

Im not sure if i have the electronic kph to mph convertor, i'll have a look tonight for you.

Nope, doesnt stall in tiptronic because i take it down to 2nd gear and that seems to solve it, but it doesnt go from 3rd to 2nd at all in automatic so i think it's just stalling as it would if you slowed right down in 3rd gear in a manual car? Maybe not, i dont know enough but it seems logical.

I can see your logic, but regardless of the gear the gearbox happens to be in, the engine should not stall. There are definitely three speed sensors on an FTO autobox. One is gear driven and sends a signal to the speedo. The other two are desribed as input speed sensor and output speed sensor. I guess that if any of these were faulty it could give rise to your gearchange symptoms - and possibly the stalling problem. They may well be connected or you may have two separate faults.

A definitive (not a guess and no disrespect intended) fault code would be a help.

 

[bodhi]

Yeah, sorry, i guess not having a fault code doesn't make it easier. I didn't get an actual number, i was just told that 'the only fault code is the speed sensor'.

Either Itsme or Pancho live near York?!!

 

[JIM451]

Re:

If After Checking The Speed Sensors And The Problem Persists Have The Machanic Check The Fuel Pressure Return Valve.this Valve Is Most Often Controled By The Engines Intake Manifold Vacuum System And Controls The Amount Of Fuel Being Delivered To The Injectors.

 

[pancho]

Yeah, sorry, i guess not having a fault code doesn't make it easier. I didn't get an actual number, i was just told that 'the only fault code is the speed sensor'.

Either Itsme or Pancho live near York?!!

County Durham

 

[bodhi]

County Durham

Thats quite near York, fancy fixing my car for me?!!