Elise S1 Mods and problems

[Mattbelly]

I have just bought myself a 1998 S1 Elise, which I went out and fitted some Paul Ivey valves and some 285 piper cams (verneir pulley advanced 8Deg on Exhaust), along with the Janspeed exhaust, decat pipe and ITG filter. After having set all of this up I achieved 150bhp without ECU mods. As for all the dealers trying to sell me throttle bodies etc (which I cant see making much difference??) is it worth an ICON chip and FSE valve or the full Emerald ECU and a performnace manifold??

Also does anyone have any ideas why my fuel pump fuse keeps blowing and now my rad fan stays on with the Stack display reading 140C. Is my ECU knacked (or needs ressetting by Rover??) or is it just the thermistors??

Any help would be greatly apprecaited, Merry Xmas all!
Thanks
Matt

[Arno]

285 cams with an Emerald ECU and throttle bodies should be able to make nearly 180Hp or so.

But... Did you port the head? Sport exhaust? Better exhaust manifold?

More info on Dave Andrew's site:

http://members.aol.com/DVAPower/

Don't bother with the interceptor or an FSE.

Bye, Arno.

>> Edited by Arno on Tuesday 24th December 16:17

[Stevef]

The continuously running fan suggests that there is a problem with one of your temperature senders, this is a precaution when the ecu detects an erroneuos temp reading ie 140 degrees.

[fergusd]

The ECU and Stack have seperate sensors on the coolant outflow elbow, so you need to examine each symptom seperately..

Have a look on

www.elise-faq.info/content/cooling/index.php

and look for the info on the temp sensors to identify each one.

The sensors AND the loom are colour coded, check that blue goes to blue and brown goes to brown.

The ECU will run the fan constantly if the resistance of the thermistor is too high (possibly disconnected => ~extremely high) or the wrong sensor !

Both the sensors are negative temp coefficient resistors, so lower resistance == higher temp so if the stack is displaying 140C then the resistance is far too low, again the wrong sensor ? or a short to ground ?

It can't be running at 140C, the coolant would boil and vent from the header tank cap, it's only pressurised to cope with 120C.