Jump to content

litp.jpg

Lotus in the Peak
26th - 28th June 2026

Cr Box Refresh And 160 Mems3 Vvc Install - With Dyno Plots


olliecast

Recommended Posts

  • Replies 69
  • Created
  • Last Reply
Posted

Alternator changed today and ensured Heatshield and air duct is route efficiently. The old one was rattling which I thought was the vvc mech but appears it was the alternator bearing!

IMAG0422_zpsfa214459.jpg

IMAG0420_zpsad93cbdb.jpg

 

Also fitted a s2 vvc engine cover to keep the water out and finish the job. Love the red!

IMAG0419_zps1bb6abbd.jpg

 

Did some data logging with a Bluetooth obii on my phone and noticed the stack temp sensor shows around 73 deg c and the ecu temp sensor shows a stable 88 to 90 degrees.

IMG-20120922-WA0000_zpsdf176f12.jpg

 

Any feedback welcome,

 

Cheers ollie

Posted

On an S1, you have a Blue and Brown sender. One does the stack and one does the ECU. Unfortunatley i cant remember which way around it is. Change the stack one but first check the connections in the end of the coolant sensor plug for corrosion.

 

Edit, i have just realised you have changed the engine. Is it an EU2 or EU3 ?

Posted

Hi martin, thanks for the responce, it's a mems 3 ecu.

 

Does it really matter if they are reading different as the ecu appears to ne receiving the correct temp via the obd data logging and this will control the fan?

Would be nice to have a stack that matches the ecu reading though.

 

Cheers,

Ollie

Posted

What colour are the 2 sensors on the head outlet pipe ? Disconnect one at a time and see what happens to the stack reading ?

Posted

Will thanks.

 

There on with only a single wire and one with two wires. Will investigate and feedback.

 

I'll get the new multimeter out and do some investigating!!

 

Cheers,

Ollie

Posted

Yep that correct, the blue one just plugs the hole.

 

Ollie the black sensor on the eu3 would run the Stack and ECU. This is important because the ECU also controls the rad fan. You need to check one is operating the fan by disconnecting one at a time and the fan should come on. Then get it up to temp and check it operates the fan. if that all works i wouldnt worry.

Posted

some more work done today...

 

was getting a knocking from the front and found by tugging on the roll bar it was knocking quite bad.

 

replaced the drop links and the roll bar bushes.

 

The bolts holding the roll bar bushes on were really tight! along with stubborn under tray bolts that were a right pain to remove!

 

interesting found load of crap in the front under tray along with about 5 cigarette ends!

 

anyway, found a little improvised tool very handy!

IMAG0424_zpsf02fb6bb.jpg

 

and confirmation the old bushes were knackered:

IMAG0423_zpscffbb4f8.jpg

 

feels alot better to drive now, front end feel less "wishy washy" if that makes sense...

 

 

to the fan question above, disconnected the black plug and the fans do indeed come on so thats a positive, got to say, i can never remember it getting hot enough for them ever to come on though.

 

is it just a matter of taking it for a drive then letting it idle until the temp gets hot enough?

 

Cheers,

ollie

Archived

This topic is now archived and is closed to further replies.

×
×
  • Create New...