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Garymorris *
Age: 46 Zodiac: Joined: 05 Feb 2012 Posts: 10 Location: Bristol
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Posted: Sun Jan 06, 2013 20:49 Post subject: 1997 2.8td pajero poor idle |
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Hi everyone.
My Dads beloved pajero is driving him up the wall with poor tick over.
Starts spot on and drives fine. When up to temperature when you come to a stop it idles poorly like its going to cut out, but then recovers.
We know its a fly by wire which i believe can be a pain. Checked all the obvious and serviced regularly. If it was the TPS i believe it would change gear irratically which it dosnt. possible duff map sensor?
Can anyone shed some light? Does this model have a idle speed controller?
Many thanks |
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Posted: Sun Jan 06, 2013 20:49 Post subject: Google Ads keep the POCUK free to join! |
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Mark3 LifeTime Member
Age: 61 Zodiac: Joined: 13 Feb 2009 Posts: 4016 Location: Rainham Village, Essex.
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Posted: Tue Jan 08, 2013 11:39 Post subject: |
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The injector pump controls idle speed, there is a sequence to go through to get the idle stable again, have a read of this;
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Garymorris *
Age: 46 Zodiac: Joined: 05 Feb 2012 Posts: 10 Location: Bristol
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Posted: Tue Jan 08, 2013 12:00 Post subject: |
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Thanks for your input.
Will this procedure be relevant for the 4m40 engine also?
I noted the document states 4m41
Thnks again |
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Mark3 LifeTime Member
Age: 61 Zodiac: Joined: 13 Feb 2009 Posts: 4016 Location: Rainham Village, Essex.
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Posted: Tue Jan 08, 2013 12:08 Post subject: |
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Yes it should be, no harm in trying |
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geodrome *******
Age: 56 Zodiac: Joined: 22 Nov 2008 Posts: 3357 Location: On the beach, surfin? Down under, NSW!
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Posted: Tue Jan 08, 2013 19:38 Post subject: |
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A funny thing is, before I repaired my pump 3.2 DiD it needed this done when I took the battery off. Now it doesn't. Which is a relief as my aircon needs fixed. |
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Mark3 LifeTime Member
Age: 61 Zodiac: Joined: 13 Feb 2009 Posts: 4016 Location: Rainham Village, Essex.
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Posted: Tue Jan 08, 2013 20:20 Post subject: |
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geodrome wrote: |
A funny thing is, before I repaired my pump 3.2 DiD it needed this done when I took the battery off. Now it doesn't. Which is a relief as my aircon needs fixed. |
Also the times i done seals on 2.8s with EDC pumps and i never had a problem with erratic idle afterwards. |
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geodrome *******
Age: 56 Zodiac: Joined: 22 Nov 2008 Posts: 3357 Location: On the beach, surfin? Down under, NSW!
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Posted: Tue Jan 08, 2013 20:50 Post subject: |
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Could there be a problem inside the pump? Wear in the rotor head perhaps? |
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Garymorris *
Age: 46 Zodiac: Joined: 05 Feb 2012 Posts: 10 Location: Bristol
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Posted: Wed Jan 09, 2013 10:19 Post subject: |
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The Pump had a total refurb a couple of years ago along with injectors |
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Dave Spalding ****
Age: 38 Zodiac: Joined: 28 Jul 2011 Posts: 453 Location: Edinburgh
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Posted: Wed Jan 09, 2013 13:10 Post subject: |
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I've noticed that my idle goes up and down from cold start. Seems to coincide with the glow plugs pulsing on and off. Actually almost stalls its self and will stall if driven at this point. I pressume from seal failure in the early stages but Im wondering if there could be another issue too? |
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Preid ***
Age: 36 Zodiac: Joined: 18 May 2008 Posts: 163 Location: Aberdeen
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Posted: Wed Jan 09, 2013 13:32 Post subject: |
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I was going to try this but I dont have a belt to the A/C pump!
My Paj idles fine in N but when you engage D it'll drop's to a nice vehicle shaking <400 rpm! |
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cjard ****
Age: 111 Zodiac: Joined: 28 Oct 2012 Posts: 300 Location: Lancashire
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Posted: Thu Jan 10, 2013 2:43 Post subject: |
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Dave Spalding wrote: |
I've noticed that my idle goes up and down from cold start. Seems to coincide with the glow plugs pulsing on and off. Actually almost stalls its self and will stall if driven at this point. I pressume from seal failure in the early stages but Im wondering if there could be another issue too? |
Most the diesel diesel cars I've worked on have an electrical solenoid that shuts off the fuel supply to stop the engine. When powered the valve is open and fuel flows. The valve is not an on/off thing on my bro's landcruiser: the lever can be moved halfway to produce a very rough idle
I was wondering if the heavy load of the plugs is causing some other weakness in your electrical system (like a poor earth for the stop solenoid) to manifest as the stop solenoid partly closing the valve
You could try wiring the stop solenoid directly to another booster battery while it's exhibiting the problem and seeing if the stalling tendency clears? |
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cjard ****
Age: 111 Zodiac: Joined: 28 Oct 2012 Posts: 300 Location: Lancashire
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Posted: Thu Jan 10, 2013 2:44 Post subject: |
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ps i say "most cars.." because i dont know for sure that the pajero has such a device for killing the engine - first step would be to find out if it does?! |
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Garymorris *
Age: 46 Zodiac: Joined: 05 Feb 2012 Posts: 10 Location: Bristol
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Posted: Thu Jan 10, 2013 8:29 Post subject: |
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Would my Dads 4m40 fly by wire have an idle control motor? |
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lloydcole Newbie
Age: 43 Zodiac: Joined: 30 Mar 2013 Posts: 4 Location: suffolk
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Posted: Sat Mar 30, 2013 21:54 Post subject: Re: 1997 2.8td pajero poor idle |
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Garymorris wrote: |
Hi everyone.
My Dads beloved pajero is driving him up the wall with poor tick over.
Starts spot on and drives fine. When up to temperature when you come to a stop it idles poorly like its going to cut out, but then recovers.
We know its a fly by wire which i believe can be a pain. Checked all the obvious and serviced regularly. If it was the TPS i believe it would change gear irratically which it dosnt. possible duff map sensor?
Can anyone shed some light? Does this model have a idle speed controller?
Many thanks |
I know its been some time lol, did u ever solve this, we get this and always have had it, change from to d to park or reverse to d and its up and down like its gonna die then fine, ive done my front seal and a new lift pump.
If shifted to n or park it seems to be fine, I have a carman, have plugged in, tps fine. |
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Warrobongo *
Age: 52 Zodiac: Joined: 25 Jun 2013 Posts: 37 Location: Wales, UK
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Posted: Thu Jul 11, 2013 17:13 Post subject: |
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Hi mine is doing exactly as lloydcole explains and driving me nuts, it will almost stall when first started cold, when warmed up to temp it is fine, any one know how to solve this |
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