Cooling fans not working

[QBee]

And the next problem is........
.......fans not working.

1999 car.
Drove 8 miles today, temperature gauge went over 100. Stopped the car, turned on the ignition, no fans.
Pulled away the carpet, pulled out the ECU etc, so which fuse(s) is it?
Handbook out, it helpfully says I have the 6/5 asymmetrical relay layout.......bks.
I have the normal 6/6 layout.
Fuses 1, 3 and 19 all fine. Got the bible out, those are the normal suspects.

Suggestions please?

Next problem.....
On pulling the ECU out of the way, I noticed the bottom back corner was sticky. Investigated where it had sat, battery acid on the floor. Could this be as a result of the engine getting hot? Car still starts fine. Are the two issues linked?

[sheel]

Had an issue last week, fitted Clive "Y" messing about noticed only 1 fan running, yes like you did all the usual, but easy fix as it was bad connections to the fans via the plugs by the rad, so expecting the worse but simple fix
Rich

[TJC46]

QBee said:

And the next problem is........
.......fans not working.

1999 car.
Drove 8 miles today, temperature gauge went over 100. Stopped the car, turned on the ignition, no fans.

Suggestions please?

Next problem.....
On pulling the ECU out of the way, I noticed the bottom back corner was sticky. Investigated where it had sat, battery acid on the floor. Could this be as a result of the engine getting hot? Car still starts fine. Are the two issues linked?

For the fans...... follow the wire from each fan until you come to a plastic connector, one for each fan.
Remove the bullet connectors and thoroughly clean and copper grease each one and replace the wires.
Now pull the 2 spades off the otter switch, which is located on the bottom of the swirl tank.
Use a short piece of wire and connect the 2 spades. Turn on the ignition only, dont start the engine,and the fans should run.
If successful now replace the wires on the otter switch and start the car and let the temp rise to around the 90 mark and the fans should kick in.
If they dont you need to replace the otter switch.

2nd problem with the leaking battery is just coincidence, it has absolutely nothing to do with the engine getting hot.

[carsy]

Check the connections at the fans are good.

The otter switch can be tempramental. Try shorting it out, join the two connectors on it together. If the fans then come on you have a dodgy otter switch. If you are relying on the otter to control the fans put an override switch on so you can control them yourself.

[rigga]

Otter switch might be on the rad and not the swirl tank,otherwise as above.

[Alun450]

As all above, my temp gauge was up and down, sorted guage connection and all is well!
Battery acid, get rid of that battery if that's correct, have you drank it, make sure it's not water..
As Sheel says the connections are the likely cause Anthony.

[phazed]

All of that,..............

[ChimpOnGas]

Feckin mices again Anthony?

[QBee]

Thanks guys, and particularly Peter, who has been helping me by text. Despite this, he doesn't know where I have put my multimeter!!

We have a resolution. At least one fan connection may have been faulty, but the otter switch is definitely Tarka Dahl..... I got the car up over 90 degrees, nothing, shorted out the otter switch with a screwdriver across the otter switch terminals, fans came on. So fans and fuses ok, otter Tarka'd.

Alun, the liquid was definitely acid - I tasted it. Neutralised it with NaHCO3. Washed it all away. Will find my multimeter tomorrow and test for the alternator overcharging the battery, then get the battery checked for cracks if battery charging is normal.

[QBee]

ChimpOnGas said:

Feckin mices again Anthony?

Nope - moved house 60 miles to get away from them. No mices at new home.....yet.

[QBee]

rigga said:

Otter switch might be on the rad and not the swirl tank,otherwise as above.

Correct.....

[ChimpOnGas]

QBee said:

ChimpOnGas said:

Feckin mices again Anthony?

Nope - moved house 60 miles to get away from them. No mices at new home.....yet.

One might be hitch-hiking?

[QBee]

Possibly, but not the cause of today's problem. It was Tarka instead.

[Alun450]

Anthony is your battery in it's box or sitting free! I can't imagine it would crack over bumps etc, multi meters, I bought one never got to use it as it was always lost! I'm sure my brother robbed it!

Goodluck sir.

Your chemistry seems well in order anyways, lol.

[QBee]

Alun450 said:

Anthony is your battery in it's box or sitting free! I can't imagine it would crack over bumps etc, multi meters, I bought one never got to use it as it was always lost! I'm sure my brother robbed it!

Goodluck sir.

Your chemistry seems well in order anyways, lol.

In its box, so I will check how the alternator is performing tomorrow. Sure I can find that pesky multimeter if i try harder. Now I need to source Tarka.

[rigga]

TVR COOLING INTERMOTOR ELECTRIC FAN SWITCHES



Part No.A/F Size Thread Temp °C

50100 29 M22 x 1.5 82-68
50101 29 M22 x 1.5 84-79/88-83
50250 29 M22 x 1.5 86-76
50012 29 M22 x 1.5 86-77
50090 29 M22 x 1.5 86-81
50120 29 M22 x 1.5 88-79
50295 29 M22 x 1.5 88-79
50296 29 M22 x 1.5 88-79/110-102
50271 29 M22 x 1.5 88-83
50272 29 M22 x 1.5 88-83
50275 29 M22 x 1.5 88-83
50217 29 M22 x 1.5 88-83/92-87
50091 29 M22 x 1.5 88-83/92-87
50212 29 M22 x 1.5 88-83/92-87
50213 29 M22 x 1.5 88-83/92-87
50216 29 M22 x 1.5 88-83/92-87
50221 29 M22 x 1.5 88-83/92-87
50219 29 M22 x 1.5 88-83/92-97
50240 29 M22 x 1.5 90-80
50110 29 M22 x 1.5 92-82
50111 29 M22 x 1.5 92-82
50112 29 M22 x 1.5 92-82
50113 29 M22 x 1.5 92-82/95-80
50218 29 M22 x 1.5 92-82/97-92
50170 29 M22 x 1.5 92-87
50200 29 M22 x 1.5 92-87
50210 29 M22 x 1.5 92-87
50211 29 M22 x 1.5 92-87
50220 29 M22 x 1.5 92-87
50230 29 M22 x 1.5 92-87
50231 29 M22 x 1.5 92-87
50235 29 M22 x 1.5 92-87
50260 29 M22 x 1.5 92-87
50270 29 M22 x 1.5 92-87
50280 29 M22 x 1.5 92-87
50281 29 M22 x 1.5 92-87
50285 29 M22 x 1.5 92-87
50290 29 M22 x 1.5 92-87
50215 29 M22 x 1.5 92-87/97-92
50011 29 M22 x 1.5 93-88
50102 29 M22 x 1.5 93-88/97-92
50035 29 M22 x 1.5 95-85/102-92
50130 29 M22 x 1.5 95-86
50030 29 M22 x 1.5 95-90
50033 29 M22 x 1.5 95-90
50061 29 M22 x 1.5 95-90
50062 29 M22 x 1.5 95-90
50160 29 M22 x 1.5 95-90
50092 29 M22 x 1.5 95-90/100-95
50174 29 M22 x 1.5 95-90/100-95
50104 29 M22 x 1.5 97-92
50282 29 M22 x 1.5 97-92
50103 29 M22 x 1.5 97-92/101 -96
50214 29 M22 x 1.5 97-92/102-97
50190 29 M22 x 1.5 100-95
50195 29 M22 x 1.5 100-95
50196 29 M22 x 1.5 100-95
50197 29 M22 x 1.5 100-95
50198 29 M22 x 1.5 100-95/110-105
50000 29 M22 x 1.5 103-98
50013 29 M22 x 1.5 103-98
50014 29 M22 x 1.5 103-98!
50191 29 M22 x 1.5 120-115

Intermoto part numbers available from your local factors

[QBee]

Thanks Rigga, that's a great list. I am being dim, but which one do I want please?

I did a google search and found an older thread, which seems to imply one of the 92-87 degree ones.....is this correct, and if so, which of the many listed?

Or do I play safe, order from TVR Power and wait until the middle of next week?

Edited by QBee on Saturday 1st June 07:18

[David Beer]

Go adjustable, then you can set it as you wish.

[rigga]

If you want 92-87 then anyone of those corresponding numbers will do, depends which one they have in stock, can't recall which one I had now, or as David said go adjustable.

[QBee]

My local factor has found one that is suitable, which s a Landrover part. Nobody has said that 92-87 is wrong, the alternative is to order the part from Dom, who doesn't say what temp his cuts in/out at. And waste a good driving weekend. Stat opens at 82 degrees, so fans cutting in at 92 and out at 87 would seem sensible.

Thanks for all your help.