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Author Topic: problem with hot start fix  (Read 1119 times)
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the_canadian
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« on: April 13, 2006, 06:08:09 PM »

help, little problem here! After a raid of maplins website, my hot start relay fix parts arrived to my hot little hands today. all anxious to resolve this annoying bugbear (it has been getting so much worse of late) I ran out to sort it.

Wired in, and ready to turn the key... got to 'run' and the starter kicked in. i can't even get to the start position... so it seems to drive the starter right away, it is not dis-engaging. what have i done wrong, or am i missing something??

I'll note this too... my car has cruise (not working or connected) so i skipped the resistor. but i can't see this would cause the starter not to disengage? do i still need it?

now, the odditiy....

the article says to use the brown wire. i don't have one? There are a pair of thick cables going into the large terminal of the starter, and a small black/red wire from the 2-prong plug. I used this wire to connect to the relay - is this right? other than that I have no other wires going to my starter...

(this is a j reg gsi 24v btw)

on the plus side the hot start was fixed temporarily  Cheesy Cheesy
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Tetleysmooth
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« Reply #1 on: April 13, 2006, 06:15:52 PM »

If you've got cruise control fitted, you must fit the resistor. I had the same problem.
Wired in the resistor - no problems since.
Even if the CC isn't working, fit the resistor.
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the_canadian
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« Reply #2 on: April 13, 2006, 06:17:58 PM »

If you've got cruise control fitted, you must fit the resistor. I had the same problem.
Wired in the resistor - no problems since.
Even if the CC isn't working, fit the resistor.

ta for the info!

so without the resistor the starter doesn't disengage? how odd!

must find soldering iron Smiley
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Tetleysmooth
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« Reply #3 on: April 13, 2006, 06:23:46 PM »

To be honest, I didn't use a soldering iron.Where the terminals push onto the relay, I just captured the resistor wires in there. Hope that makes sense. Works a treat and they're a good tight fit.
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the_canadian
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« Reply #4 on: April 13, 2006, 06:52:54 PM »

To be honest, I didn't use a soldering iron.Where the terminals push onto the relay, I just captured the resistor wires in there. Hope that makes sense. Works a treat and they're a good tight fit.

i went all posh and did the soldering Smiley

with that tidbit i ran back out, reapplied the fix and presto!

Thanks loads, i shall see if this sorts it once and for all!!!
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Tetleysmooth
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« Reply #5 on: April 13, 2006, 07:10:04 PM »

It should do, mine has been no trouble since applying the fix. It starts again straight away after driving for long periods  Smiley
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Tetleysmooth
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« Reply #6 on: April 13, 2006, 07:13:38 PM »

What do you drive, by the way?
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the_canadian
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« Reply #7 on: April 14, 2006, 09:46:22 AM »

What do you drive, by the way?

1992 Carly GSi 24v Auto, silver... first vaux i've had here and the best car i've had yet Smiley
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Tetleysmooth
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« Reply #8 on: April 14, 2006, 10:11:48 AM »

Nice. How about putting some photos in 'Carlton show off''.
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the_canadian
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« Reply #9 on: April 18, 2006, 06:53:28 AM »

Nice. How about putting some photos in 'Carlton show off''.

will do but it needs to see a hose soon... it's a dirty bitch at the moment Smiley
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Tetleysmooth
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« Reply #10 on: April 18, 2006, 07:52:00 AM »

Has the 'fix' cured the hot start problem?
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the_canadian
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« Reply #11 on: April 18, 2006, 09:19:59 AM »

Has the 'fix' cured the hot start problem?

so far so good, so i think the answer is a very happy 'yes'!!!!

ta for all the help again. at least i don't need to stick my head under the bonnet at tescos anymore Smiley
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the_canadian
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« Reply #12 on: May 03, 2006, 07:16:06 AM »

Has the 'fix' cured the hot start problem?

so far so good, so i think the answer is a very happy 'yes'!!!!

ta for all the help again. at least i don't need to stick my head under the bonnet at tescos anymore Smiley

2 weeks on and no problems at all. Excellent!!! now onto the exhaust.....
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Tetleysmooth
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« Reply #13 on: May 03, 2006, 10:22:57 AM »

Superb. As for the exhaust, let someone else do it  Smiley
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Bernard
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« Reply #14 on: May 03, 2006, 08:23:56 PM »

Can anybody explain what the hot start fix is used for and how it works?
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Tetleysmooth
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« Reply #15 on: May 03, 2006, 08:29:17 PM »

With a lot of these cars, when you try to start them when they're hot, you get the ignition lights on and nothing else. You turn the key and absolutely nothing happens. Once the car cools down it's fine again. Very common problem. I think the relay gives the starter an extra boost. The starter wiring system in these cars lose a lot of voltage through all the various plugs in the system, I think the relay restores some of the voltage.
I think that's right, but I'm sure someone will come on and put me right.
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the_canadian
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« Reply #16 on: May 04, 2006, 07:47:46 AM »

Can anybody explain what the hot start fix is used for and how it works?

well, first off the problem really presents itself on the autos. Basically, when thnigs are hot, thier electric conductance drops (ie it takes more 'oomph' for a current to get from a to b). The problem really presents itself on autos because there aer so many conduits for the electrics to take (o check the trans interlock, etc). So turning the key clicks the starter relay but that's it - not enough power gets to the starter to spin in (an ABS member said it hits about 7v - not anywhere near the 12 needed!). It is especially annoying as it hits about 10 minutes after the car is off, and can last for an hour. You can sit there turning the key and nothing. So you have to get out, pop the bonnet and fiddle with wires while SWMBO+youngun get progressivly bored Smiley Smiley

The relay fix is like a switch. If you know that you aren't getting enough voltage to the starter then you need more... where else to get it from but the battery! Of course, having a 12v line constantly attached to the starter would be bad Smiley so... take the switch (relay) in betwen the line from the battery and take off the weak line from the starter. This weak line that used to be providing power to the starter (but not enough) will provide enough power to energise the relay and cause the connection  to be made between the starter and battery (a shortcut rather than the convoluted path).

apparently the resistor is needed as otherwise the voltage is too high, meaning the starter is always engaged.

Hope that makes sense!
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Tetleysmooth
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« Reply #17 on: May 04, 2006, 09:34:37 AM »

Well said that man  Cheesy
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chrismec
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« Reply #18 on: May 04, 2006, 06:47:23 PM »

Couldent have put it better myself Smiley
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Murph
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« Reply #19 on: May 04, 2006, 06:58:31 PM »

Well done!
Bugger'd if I could have got that into simple terms.  Wink
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Matt
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« Reply #20 on: May 05, 2006, 12:55:13 AM »

You see I never knew anything about it, having a manual car myself....

But I bought a senny not long ago, with the hot start thingy already wired up.

I always thought it was the autobox has to tell the starter it is in P or N before it turns the starter, and it gets muddled or summat, thinking it is in a gear when it's not.

I'm thinking this because the starter switch will turn the starter even if the ignition is off, and I'm sure that it will turn the starter if it was in gear too (which I've not tried cos I don't want to Wink)
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