60 replies to this topic

[DaveRob]

The Coolant temp sensor is right under the inlet manifold... right at the back and you are hard pushed to even SEE it let alone take it out.... but if your temp guage dosent move and thats the connector this will be a MAJOR source of your troubels.... The fueling map relies HEAVILLY on the CTS signal....otherwise the thing just runs RICH all the time and then fubars the Lambda sensor and then the cat..... if you take off the airfilter and reach rond to the bottom of the manifold on the right hand side, as you look at the engine, you will see / feel a sensor pointing down.... to be sure can you tell me what are the colours of the wires leading out of that plug.... if their are two wires and they are pink/green and pink/black then tis is the CTS plug and one of the MAJor reasons you are having difficulties..... if not tell me what colour the wires are to the plug and Ill tell you what its for.... For a more detailed explination of how it all works follow this thread...
http://www.theminifo...x...c=61469&hl=

report back and we can take it from their.

Rob

[DaveRob]

Exhaust if you want is here

 DSCF0984__600_x_450_.jpg   68.2K   18 downloads

 DSCF0985__600_x_450_.jpg   67.29K   10 downloads

Although its big bore its quiet and Ive been on many a minirun with it for miles and miles and you certainly wont need ear defenders, it is Stainless and has cat and manifold as well.... Ill be keeping the Lambda tho.... need it for my NEW big bore lol £60 or make me an offer



Rob

Edited by DaveRob, 22 May 2008 - 02:13 PM.

[Sprocket]

This looks very much like the manifold heater power supply

http://www.theminifo...x...st&id=58611

[OJM]

Right, got my air box off at the moment...

The loose cable has one thick wire going into it - blue and brown (possibly mucky green and mucky orange). Sproket, if this is the manifold heater, how can I plug it back in? Haynes mentions taking the manifold off... \

Also checked the MAP and the tube which should go to the manifold, isn't. The connector at the end of the tube has split in two, but I can't even find where it is supposed to go on the intake. Any ideas? Haynes manual just says "remember where you disconnect it from"...helpful!!!

[DaveRob]

Manifold PTC heater should be Brown/Blue..... if its a single cable and this colour its going to be this..... as Sprocket says.....

Rob

[OJM]

Any ideas where to reconnect it to? EDIT - think I may know...there's a flat piece of metal near the two nipples I mention below. I assume this is the connector for the heater...?

I'm currently trying to locate where the MAP trap needs to connect to on the intake - from feel, I can feel two nipples directly underneath the intake lump...the flat bottom, but they don't seem long enough for the tube to connect to, and also seem too far away.

Located this image, but can't find the nipple on the back of the intake, just the two I mentioned, that are underneath;



PS - Any ideas where I can purchase replacement tubes / connectors for the MAP trap from?

Edited by OJM, 22 May 2008 - 06:49 PM.

[DaveRob]

Back of manifold photo

 DSCF1010__600_x_450_.jpg   69.71K   47 downloads

Shows the two nipples for the MAP and the air intake sensor ( red and beigge... not that you can see if its on the car)... the CTS at the bottom left and manifold heater spade connection ( I think )

by the way this is view from the bulkhead side of the intake manifold....ie its been removed

Rob

Edited by DaveRob, 22 May 2008 - 07:06 PM.

[OJM]

Brilliant! I located the beige one, and swapped the tube round so the broken end is at the trap - will allow me to swap / monitor a bit easier. Also connected the heater...hopefully there's no wrong or right way round.

Took it out for a drive and it seems ok, but it has moments where it runs fine! Re-patched up the exhaust as well, so hopefully that will keep me going for a couple of days, until I buy yours

Many thanks for all the help from everyone! Hopefully it'll be sorted now, but still need to find where to buy the tube connectors from - any ideas, please let me know. However, I'll pop to the scrappers this weekend and see if there's any Minis around.

[Sprocket]

Moss, Minispares, Minisportt, and probibly your local motor factors would be able to supply you with new tube connectors. They wonnt be the same, but just as good if not better.

Another option is to buy some Samco silicon vacuum tubing and replace everything with that

[OJM]

Ah ha, found them!

Unfortunately, the engine is still spluttering, and has big problems staying started for at least 5 minutes, then it seems fine.

Think what I'll do is not use him until I replace the exhaust - meanwhile, I'll purchase the replacment fuel trap hose, and maybe replace the fuel filter at the same time.

Is there anything else that would be worth replacing with new components?

[OJM]

Rob,

Are these the correct gaskets for the exhaust? Thought I may as well replace them whilst fitting it

1 x http://www.minispare....aspx?pid=37065
2 x http://www.minispare....aspx?pid=34474

By the way, is the flexible knuckle AOK on the system, as this is what's gone on ours?

Cheers - PS, did you get my PM about this week?

[OJM]

Rob, thanks again for running the diags on our car! Unfortunate about the exhaust, but can't be helped.

Just want to check I'm looking at the right parts to order (big difference in price);

CTS;
£37.99 (£41.08 - 7.5%) - http://minispares.co....aspx?pid=34159
£26.53 - http://www.minisport...fo_ADU7161.html

Downpipe;
£80.37 (£86.89 - 7.5%) - http://minispares.co....aspx?pid=33648
£58.12 - http://www.minisport...o_GEX12043.html

Any known difference between them?

Edited by OJM, 28 May 2008 - 08:33 PM.

[DaveRob]

I could be wrong....but the 2 CTS sensors look the same.... maybe ask minisport if theirs is a genunie rover replacement, where the sensors are concerned I do tend to keep to gen Rover parts... otherwise go for the cheaper. As for the downpipe..... the Minisport one has the flexible knuckle and the Minispares one doesnt..... to keep your oridginality id have the flex knuckle type on your car.

Hope this helps

Rob

[OJM]

Well currently waiting on the order from Mini Sport, as the thermostat and gaskets are out of stock - after about 5 days wait, I've asked them to ship the exhaust and sensor separately, and I'll replace the thermostat when it arrives. Thinking about it, I should have just cancelled it, but I wanted to use the Mini gaskets rather than generic ones from Halfords, so I'll wait.

Hopefully this means the exhaust downpipe and sensor should arrive in time for a weekend fitment, so fingers crossed.

In regards to the fitment of the sensor, from what I remember you saying Rob, it's best to replace whilst flushing the radiator - I was going to flush this anyway, but was hoping someone might know of a guide on flushing the system for a Mini, to make sure I get it as clean as possible...?

Once old Monty's back on the road, we'll get it polished up and post some pics!

As a note, are we the only ones on here with a '94 Monty Carlo? I can't find topics about any others.

[DaveRob]

In regards to the fitment of the sensor, from what I remember you saying Rob, it's best to replace whilst flushing the radiator - I was going to flush this anyway, but was hoping someone might know of a guide on flushing the system for a Mini, to make sure I get it as clean as possible...?

What I meant was you will have to drain the rad anyway so take the opportunity to flush it all out. Getting to the bottom hose to get it off is the usual problem... long thin screwdriver and arms like long stringy worms helps...lol but is easier if you have the manifold off tho. And while you are on with all this...check all your ECU and other EARTH points, disconnect the battery and clean neg term where it bonds the bodywork..... take the neg off first before the pos..... then check all the earths in the engine bay....the thick straps arnt the only ones theirs a few under the left side on the bulkhead.... and a couple on the right bulkhead........take the screws out and clean the metal so you have a good bond then clean the terminals before putting all back together and smear a little grease or vasaline.

Hope this helps

Rob