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Hi All,

I'm driving a 2002 MG TF 160 in South Africa. MG left the country a while ago so it's difficult to get help on this issue.

History on the car:

Cambelt broke while driving due to a loose bolt on the head cover. This fell out and wedged between the belt and the waterpump. All valves bent. This was fixed.
The mechanic took the VVC off of the head, even though he knew not to, and struggled to put it back properly.
He eventually got it right and the car ran fine. But I suspect this might be the issue.

A short while later the RPM cut out while driving. This only happens when trying to maintain a certain RPM/speed.
This problem was intermittent but got more frequent and now happens all the time.

The car then also started idling higher than usual when it heats up. It also starts revving up and down when I'm waiting at the street light.

I took the car back to the mechanic, he checked all the sensors and had a de-cat done on the car (terrible job done, just emptied out the cat and welded it back. Sounds like a tin can with wheels now). He didnt even ask me if he can decat it or how it should be done, but I had to pay for it.

He then go a specialist in who diagnosed the car with an official MG diagnostics computer. He said the petrol pump must be replaced as this is the issue.
He charged me for his diagnostics and for a "refurbished" petrol pump. I paid for everything and the problem persisted.

The mechanic then said he cant do anything else and gave the car back.

I then took the car to another mechanic/auto electrician who has experience with MG.

He cant find any diagnostic errors/faults. He replaced the TPS with a new one. The issue persists. He swapped out the MAP sensor, the problem persists. He said when you touch the MAP sensor then the car dies.

He checked all wiring and said it seems fine. He checked the timing

In his opinion, the previous mechanic must've re-wired the car wrong when they reconnected everything. This could've shorted the ECU and "blown an internal track within the ECU". Or the VVC was never put back together properly and is acting up.

Please help on the issue. If you have had any similar issue or your car has had similar symptoms please let me know how you resolved it.

Many thanks
 

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mg_tf
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Haven't we seen this exact same post before by a poster called 'uholtz' with a different country flag? I asked a few questions but the OP never replied...
 

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Very strange...
 

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'06 MG ZR +120 (HQM) '04 MG ZR 105 (IAB)
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Not really strange - more likely a potential spammer.

Seen them so many times - start by making a post or two which seem inocuous on the face of it (though usually out of place, slightly 'off-beam' or resurrecting a very old thread); then, thinking they have established a user name that will not arouse suspicion immediately, the spamming starts.

I am thinking this one will go the same direction.
 
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