vario problems after every test

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thejackal01
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vario problems after every test

Post by thejackal01 » 08 May 2013 08:30 pm

I give up..... drove car just now for ten mins and will only do 20mph at 4500rpm!!!!!!

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volvodspec
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Re: vario problems after every test

Post by volvodspec » 08 May 2013 08:45 pm

that means that it's stuck in forced kickdown.

what tests have you done?

thejackal01
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Re: vario problems after every test

Post by thejackal01 » 08 May 2013 08:50 pm

every single test shown on the manual on this site.

new transisitor fitted... new diode to prevent blowing again.... found break in circuit and soldered in wire to reconnect it...
new vaccum kit fitted... all connections tested... I have donw the lot.

drove the car and was perfect after..... 3 rd time out today and drove fine for 10 mins.... then worse than I started... as stated.. 20mph at 4500rpm...

gone bad to normal... now worse than it started??

macplaxton
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Re: vario problems after every test

Post by macplaxton » 08 May 2013 08:55 pm

I would go back and check the last few things done to it. Then again, it come be something completely different. :cry:
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volvodspec
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Re: vario problems after every test

Post by volvodspec » 08 May 2013 09:01 pm

transistor + diode belong to the overdrive section of the EMV, your problem is in the kickdown section.

with the ignition switched on, do you get 12V on the yellow/green wire of the EMV?

check the bit Checking the electrical section
http://www.volvo300mania.com/forum-uk/v ... =6&t=12314

thejackal01
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Re: vario problems after every test

Post by thejackal01 » 09 May 2013 10:00 am

i am just about to go and have one more go with it now and see if u can find out what gone wrong.... if not car going on ebay tonight

thejackal01
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Re: vario problems after every test

Post by thejackal01 » 09 May 2013 02:01 pm

no there is not 12v no current at all on these wires

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volvodspec
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Re: vario problems after every test

Post by volvodspec » 09 May 2013 03:14 pm

then take the EMV apart and check if the T shaped cups/seals are still intact

is the thinner vacuum hose connected to the A-side?

thejackal01
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Re: vario problems after every test

Post by thejackal01 » 09 May 2013 04:28 pm

yes checked that just now. all ok inside..... back on car and droive fine for few mins then over revving again and nothing above 20mph.....

took control box off again and checked all the soldering and redone the transistoir. again car drove fine for minutes and then revs up crazy style!!

I am totally lost

thejackal01
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Re: vario problems after every test

Post by thejackal01 » 09 May 2013 04:48 pm

side B of the vac pump is very hot if that makes a difference???

but internals are fine..... but when I tapped it with my hand to see if there was any sticking, the pump started making a hissing sound and clicked 2-3 times and then stopped again

macplaxton
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Re: vario problems after every test

Post by macplaxton » 09 May 2013 04:54 pm

Pump? Do you mean valve? Is the solenoid one side playing up?
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thejackal01
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Joined: 16 Jan 2013 12:03 pm

Re: vario problems after every test

Post by thejackal01 » 09 May 2013 05:09 pm

sorry yes. valve.. t5he emv. not sure but since I done all the work on it, the B side is very hot and the other cold?? I am thinking I need a new one. cannot drive it like this as it will be dead in less than 5 mins.

I think it must be the valve that's at fault. but cant find another to compare and test

macplaxton
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Re: vario problems after every test

Post by macplaxton » 09 May 2013 06:01 pm

Should the B-side be on? If it is, then it should get some sort of warm when current is flowing through it. #

B-side hot, suggests that solenoid is energised. That is the kickdown side. So why is that? You haven't knocked the low-ratio hold switch have you? and it is wired correctly? and the warning light works?
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82 Volvo 343DL CVTImageImage 88 Volvo 340DL Diesel

thejackal01
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Joined: 16 Jan 2013 12:03 pm

Re: vario problems after every test

Post by thejackal01 » 09 May 2013 06:41 pm

warning light works. switched not pressed. all electrical test shows working and lights goes out when gas pedal pressed all to the floor

just found when I turn engine off... the B side pipe is hissing loud, when I pull the pipe off the valve it empties??

I think I have a new problem

thejackal01
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Joined: 16 Jan 2013 12:03 pm

Re: vario problems after every test

Post by thejackal01 » 09 May 2013 07:21 pm

just taken car out again to test fvew things and it was screaming bad... so I could get back home I changed the pipes over on A and B... can drove home half mile fine????

the pipe on A is large one that should be on B..... can anyone work out what is happening or had similar problems before??

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