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1998 Mpi Running Issues After Restoration


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#76 leepol83

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Posted 25 October 2020 - 09:30 AM

Try this, make sure there is slack in the accelerator cable. Loosen off the throttle screw, retighten the throttle screw so that it is touching the lever and very slightly opening the throttle, a tiny amount.


What will this do ?

#77 pete l

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Posted 25 October 2020 - 11:50 AM

Do what i said accelerator cable and screw thing.
T4 cheap? Nowhere.
Im sure the programmer you got can do it, it's a function that's just been added

#78 pete l

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Posted 25 October 2020 - 11:55 AM

Try this, make sure there is slack in the accelerator cable. Loosen off the throttle screw, retighten the throttle screw so that it is touching the lever and very slightly opening the throttle, a tiny amount.


What will this do ?

It will set the iacv to arou'd where it needs to be. It won't be spot on, unless you are very lucky, but it will tell you if this is where you problem is.
Just remember, the throttle screw on these car does not set the idle speed, it sets the iacv valve. The ecu sets the idle speed.
So slack throttle cable, screw out then back in until it just moves the lever a tiny amount.

#79 leepol83

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Posted 25 October 2020 - 01:20 PM

Try this, make sure there is slack in the accelerator cable. Loosen off the throttle screw, retighten the throttle screw so that it is touching the lever and very slightly opening the throttle, a tiny amount.

What will this do ?
It will set the iacv to arou'd where it needs to be. It won't be spot on, unless you are very lucky, but it will tell you if this is where you problem is.
Just remember, the throttle screw on these car does not set the idle speed, it sets the iacv valve. The ecu sets the idle speed.
So slack throttle cable, screw out then back in until it just moves the lever a tiny amount.

Right I’ll try that then thanks for the advice appreciate it.
It seems to run ok now apart from the slight delay In revs dropping, I’ll see how much these machines are, I purchased a Sykes picavent ACR4 one the other week but it would not connect to my car for some reason so Went back I’m reluctant to buy another if I’m honest but may have to

#80 tmsmini

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Posted 26 October 2020 - 01:44 AM

Which module are you using with the ACR and which cable?



#81 leepol83

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Posted 26 October 2020 - 07:28 AM

Which module are you using with the ACR and which cable?


just says unable to establish a data communications, check connections and retry.
This was the description of the item :-

Sykes Pickavant Acr4 Rover Mini Spi Mpi Code Reader Kit . Condition is Used. Contains
1 x Acr4 handset
1 x G2 pod with Rover loaded
1 x 30211600 spi 3 pin round lead
1 x 30212400 mpi 16 pin lead
Extension cable
All mounted in the proper carry case

#82 leepol83

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Posted 01 November 2020 - 05:55 PM

Hi I’ve reset the IACV today and it’s a little better did as
Pete I Recommended revs do stick a little and it ticks over abit too high just over 1000 rpm it does eventually drop a little to 1000 rpm after a while,
am I definitely going to have to plug this in and set the steps ????

Thank you

#83 pete l

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Posted 02 November 2020 - 08:47 AM

Yes you are. It's the only way to set it up correctly.



#84 leepol83

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Posted 02 November 2020 - 07:17 PM

Yes you are. It's the only way to set it up correctly.

Super that’s that then I need another machine 🤦‍♂️

#85 pete l

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Posted 03 November 2020 - 08:30 AM

Or find someone who's got one or someone who has a T4 

 

Where are you ?



#86 pete l

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Posted 03 November 2020 - 08:33 AM

Leicestershire ?  That's right next door to MG Rover land. There must be loads of garages with a T4 up there.



#87 pete l

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Posted 03 November 2020 - 08:49 AM

Here's a map of T4 owners in the UK

 

https://www.google.c...08935958303&z=7



#88 tmsmini

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Posted 03 November 2020 - 03:39 PM

What is it you expect the T4 to do that your ACR cannot do?

If there is a communication issue with the ACR, then most likely there would be an issue with the T4.

Test the ACR on another car to make sure it is not the problem.

Terry



#89 leepol83

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Posted 03 November 2020 - 05:04 PM

What is it you expect the T4 to do that your ACR cannot do?
If there is a communication issue with the ACR, then most likely there would be an issue with the T4.
Test the ACR on another car to make sure it is not the problem.
Terry

Thanks Terry never thought of that if I’m honest acted abit hasty sending it back as it cost me a lot of money, wish I’d hung on abit with it now 🤦‍♂️

#90 leepol83

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Posted 03 November 2020 - 05:07 PM

Leicestershire ? That's right next door to MG Rover land. There must be loads of garages with a T4 up there.


Yes Leicestershire mate problem is the car isn’t drivable or legal so would need someone to lend or come to me which at the moment isn’t really an option with the world the way it is.




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