Electrical problem....or worse...?

[IvanS.]

Ok this will sound strange....here goes:

Two days ago, when my parents got them new car, my Volvo started to act strange..I can't say it's not angry, cose he will not be in garage any longer ( but it could be the reason too ) and started causing problems...

We have installed gas tank & other stuff several months before and it worked not just fine, but ok. 2 days ago, suddenly when my father and i went to town, it just lost his power. It didn't turn off but acted like he has 30hp less than it should have .
Even when i hit the floor, same result. When it goes on gas, you can feel it quite well, but difference when it goes on benzine is not quite big.

When i hit the gas pedal to the full, it's acting like getting small portions of gas/benzine in the engine, and car starts rocking , acceleration is a way behind good than it was and like it has less torque than it's suppose to have.
It looks like he doesn't use constant electrical power from the engine.

Does anyone have some ideas, what this could be ?

I'll post a video-clip tomorrow so You could take a closer look at problem.

Thanks

[redline]

Hi Ivan , try the usual things first ,spark plugs , HT leads ,distributor cap and rotor arm,

if it hasn't had these done lately it would be worth doing anyway

you could also try changing the in line fuel filter as dirt could have got in the fuel pipe when you changed the tanks or there could have been dirt in the tank you have put on if it was not new.

I hope this helps

[MJ]

Yes, what redline said, in particular I'd suggest checking the distributor and rotor arm.

I didn't fully understand what you were saying about full throttle etc. But when these two parts were bad on our car it ran very bad under acceleration and load. Going up our steepish drive required a lot of clutch slip.

Alternatively there could be an air leak around the intake manifold. This is more common on the 1.7 engine I believe, but yours is a 1.4 isn't it?

[IvanS.]

To redline:

Sparks are brand new...i got NGK, they can hold on much longer than BOSH when going on gas....

Distributor cap....it was bought last year in November....but when we installed gas, we had to connect some cable of the installed gas component to outgoing cable of distributor cap.
The man who installed the gas system probably did that ....that might cause the problem, but i can not check that out.

Rotor is working fine.

Gas filter was changed 2 days ago ( we suspected that at first...well it was dirty but no big changes ), and fuel filter is...hmmm around 2-3 months old..shouldn't cause the problem.

I do no about the gas tank itself, but the person who installed that ( well we asked for the best as we were redirected from "friend" to that service and stuff he had weren't good....unfortunately we see that now ) but i think is ok. The problem is that gas here ( if you can call it a gas) is not a good quality.

to MJ:

Yes it's 1.4 litre. The thing about acceleration:
When i hit the gas, car accelerate but it's acting like smb push you hard for a second and then again and again until rpm goes to max and you have to change a gear and all over again...

I can also see electrical variations on main panel in car. Like engine is
choking itself. Air filter is ok, but in few months will be changed.

Thanks for help, i'm going to take a look under the hub now and check those stuff you've said again. i might missed something.

Thanks again.
Cheers

[pettaw]

Check out the 5lab thread at the top of the engine section.....

[classicswede]

If you have the same problem on LPG (gas gpl) and on petrol then it is most likely a common problem. It is not likely the wire going to the coil as if that is not connected then the gas will not work at all. Check for blockage in the air intake and also air leaks aroun the carb manifold.

If the car runs fine on petrol but is poor only on LPG then it is likely to be a fuel supply problem. I would make sure you have good electrical connection to the lpg solenoids etc. If you have had a big bang from the engine then check all pipe are on and also make sure the lpg mixer (part that puts gas into the engine) as not come off. Also make sure the air intake pipe is not broken as this can affect the fuel mix.

If you can post pics.

[IvanS.]

Now i can't post the pic, but I've solved the problem with another check... i'll post it tommorow....
I'm sorry again for the "online English translation" but it was electrical ignition and when it was changed and "harmonized" equal power supply for the LPG and petrol it runs ok.

Anyway i have Volvo manual in German and i do not understand it so good.

I'm taking a pic tomorrow of part that has been changed ( if i get to the car first ), i do not know how to name it...sorry again.

And at last to take a decent photo of a clean Volvo

I wanted to take them today but it was a quite destructive day for me...my friend slip from the motorbike at 150 km/h with no equipment at all..... luckily only several scratches, but motor is a disaster....front is heavily damaged, rear is OK. So i went to hospital from which he called me, and spend most of the day with him. Then his friend and i pushed the bike to his garage........what to say.....one of those days...

Thanks everyone....pic a.s.a.i get to the car.

[IvanS.]

Here are the pic of changed part:

http://www.esnips.com/doc/ceff12d0-7613 ... 2/DSCF2431

Now it's working like brand new. We changed it's original part around 11-10 years ago, and got used on. From that time it didn't go well. Now is OK. Haven't seen him in such shape of a long time. Hope this ended.

Thanks everyone....suggestions really helped
Cheers

[redline]

ahh the renix yes that would have been my next guess ,
my one failed (luckily just around the corner from my home ) and luckily I had a spare one

[IvanS.]

I know renix can get worn out and needs changing, but why do i need to " harmonize" power supply for LPG and for petrol.

Don't they have equal power supply by default ?

[djigor]

No, they dont.

[IvanS.]

Ah, found out on the hard way.
Rolling good now.