this is a good read

http://www.mgfcar.de/library/ENGINE_MANAGEMENT_SYSTEM_VVC_MEMS_2J.htm

id suggest one the solenoids in the vvc unit?

 

Here are some past threads if they help.

http://forums.mg-rover.org/showthread.php?t=92544&page=2&highlight=p1521

http://forums.mg-rover.org/showthread.php?t=160652&highlight=p1521

http://forums.mg-rover.org/showthread.php?t=202903&highlight=p1521

 

Thankyou mutleyeng I will read that artical asap and thanks cjj I read those threads before putting this one up. They do not really give any asweres but thanks anyway.

 

thats for mems 2j. you have mems3 but pretty similar.
you have a vvc fault, never seen 1521. iirc that could be a cam sensor problem rather than the actuation or the mechs, i'll try and get back to you at some point. i cant fully remember but vvc faults are 1520,1521,1522 and maybe 1524 and 1530. 1521 being a strange one. check the fragile cam sensor wiring and ecu earth, the cam sensor can be checked with an oscilloscope. i did have a typical readout somewhere........

 

Thanks Touche, the car is running ok but when I clear it the code comes back after running the car for a little while.

 

Hi to you all, I thought my car was running fine if just a little jittery but my mate just put his code reader on my car and it came up with that fault.

I have done a search on it and know it is the P1521 Variable Intake Solenoid #1 Circuit Malfunction but have not found a thread that says what you do to to fix it and were it is i should be looking.

Many thanks

Michael

Hi,

I have exactly the same problem - did you change your head gasket at all?

 

Hi
My first time on this blog I'm proud owner of 53 plate MGTF 160vvc that has just recovered from a HGF only to be finding the same symptoms as the above just hoping someone has some advice as I'm thinking of checking out the cam shaft sensor circuits (when it gets a bit warmer)

 

p1521

Hi just new to the site
I was looking for a similar fix to the problem Miky7 has exact symptoms just had hg done and error code p1521 plus amber warning light on dash?anyone shed some light.
I have followed a similar thread indicating a problem with the cam servo connections , but no one ever indicated which one connected where mine is brown left and blue right car goes well, may be a little rattle when reved
Any help much appreciated Ian TF160

 

Hi just new to the site
I was looking for a similar fix to the problem Miky7 has exact symptoms just had hg done and error code p1521 plus amber warning light on dash?anyone shed some light.
I have followed a similar thread indicating a problem with the cam servo connections , but no one ever indicated which one connected where mine is brown left and blue right car goes well, may be a little rattle when reved
Any help much appreciated Ian TF160

It could be that you vvc unit is not set up right. I will know more about it after the 18th of this month.

 

try pm ing technozen. he has much experience with all the mems variations.

 

Hi all
Just a bit of an update on progress, chainged the servo plugs around brown on the right blue on the left connected code reader removed error code, hey presto amber light now out.and staying off
Thanks for your help Ian Mc

 

Thanks for the advise will try swapping the plugs over - sorry for the delay in replying but have not been on the blog for a while & then forgot how to find the one I was involved in, not too good with computors!

 

Correct positions for the plugs, courtesy of CJJ.

 

Aiketgate

Many thanks for such a detailed reply. Will change them over tonight between torrents! Good to know there's so much help out there. will let you know how things are after work tomorrow. all the best. Micky 7

 

Just got home from work & the dash is still in darkness (thankfully) will wait another day before putting the parcel shelf etc. back on (Noisy without the padding fitted init!)

Thanks once again.

 

Amber lights back on folks! reading P1521 Iv'e noticed the revs are being limited to 5.5 I removed the brown & blue plugs one at a time & revved the engine - no faults? swapped both the plugs over to the wrong positions & revved it still no faults ran it with both sensor plugs off - still no faults the revs are being limited no matter what I try with the sensors. Am I looking in the wrong place?