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Discussion Starter · #1 ·

It happened again last weekend. In the previous times that it happened, I brushed it aside thinking that it's probably coz the car is almost 10 years old and thus, prolly some of the wiring and contacts are not so great.

But the dealer once taught me how to deal with it, using a long-nose plier. Basically to just openup the relay and re-connect the relay's contact areas and wires. Apparently the soft insides of the relay casing has gone pretty hard, probably due to overheating previously. (Given the operating temperature of the engine, I can imagine).
Am looking for a reason to replace it but the mechanic said previously that it need not be changed now, as it can still be used.

So, sometimes, i had to get almost to about 4 to 5 times ignition before the engine kicks.

But nowadays, it has elevated to cause the car to stall! Actually, I am not sure if the problem is even related. Please advise me if it is not.

This has happened at least three times already. At all times that it happened, the car was moving very slowly. At first, we were climbing a small hilly stretch just after the speed-bump. Immediately the engine stalled and all the lights came out. I revered the car to the side, took out the key, reinserted it and crank again. THen, it starts again. No problemmo. The second time it happened when I was about to go out of a junction, while being mindful of pedestrians. Again, I did the above and OK, no problemmo again. The third time it happened was just last weekend (yesterday). Again, I was driving slow, on the far left area of the road, to read some road-signs. The car stalled and I performed the same steps and OK, working again. Sometimes, it can be quite embarassing.
Haha...

Could you advise me what is wrong with the car?

Thanks.
 

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Discussion Starter · #3 ·
The fuel pump relay. OK, before I send the car in, the fuel pump relay is the one just behind the grille / horns / radiator, right? On the top, sort of enclosure, towards the right (if i am facing the car) a bit, and has only one port. Versus the ones towards the left, which has like three ports.

I tried to look for some kind of identification on the relay but the dirt and all seem to have 'erased' the words.
 

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The fuel pump relay should be in the relay box under the hood on the left side of the car.Once you remove the black cover it tells you under the cover which is which.
 

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Discussion Starter · #5 ·
Then what relay is the one just behind the grille / horns / radiator ? I noticed some tape used to hold it together, that's why I figured it's not 100%ly-well.

 

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Discussion Starter · #7 ·
AHAH!

Tech, I got a few photos of my baby. Please proceed, sir.

1 photo = Cooling Fan Relay
1 photo = Relay in the 'concealed' area
1 photo = Relay Closed-Up

 

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ampangbear,

i think tech was trying to tell you that the relay is in the fuse box.

standing in front, When you open up the hood, it is found on the top left corner of the engine bay. driver's side.

there are a couple of torx screws in there you need to remove, before you can see the relays. The fuse cover will let you know which is the fuel pump relay.

goodluck
 

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Discussion Starter · #9 ·
Kenari,

Thanks for the enlightenment. I don't get much opportunity to pop the hood at home. But i'd definitely give it a look this weekend. (Finally found a good set of Torx screwdrivers at Home-Power DIY.
Wife already started shaking her head.
)

Anyway, any idea about the relay beside the cooling fan relay?

Thanks!
 

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The one on the left is the cooling fan relay but you should know that because it says it.The other one has something to do with the fuel system.Check the wiring good at the relay.I have seen them make a car stall before.
 

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Discussion Starter · #12 ·
You know what Tech?

I think it is probably THAT particular relay thing lah. Because the mechanic has already informed me that it is a bit damaged, that the contact points aren't tight enough. He even showed me how to fixit myself anytime it causes the engine to missfire at startup, using the long-nose pliers.

But what exactly do you call it, eh?

I'd like to purchase the relay myself from the auto-parts store, and fixit meself. (And add the work onto my own D-I-Y 855T5 diary of accomplishments - something to gloat to myself, everytime work at the office seems to push my a**e to the edge.
)

And any idea how much it should cost?

 

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Discussion Starter · #16 ·
OK, got the relay changed!
The mechanic even welded the contact points together so that they won't come out again in the future. But warned that later, may have to change the whole cable altogether. Since cost was quoted to be quite minimal, i agreed. :|

However, on Monday, the car stalled again at very low speeds. TWICE! Lucky for me, it was a bumper-to-bumper crawl, so noone had the chance to honk.


Hmm...

When i called another specialist up, he said that there is a probability that the Throttle body needs 'servicing'. Is this reasonable?
Further, he said that if it still doesn't work, then probably the fuel pump relay or body(?) needs replacement. He guessed that probably the previous owner had left the car running right to the very last drop of fuel. And it seemed that doing so, even ONLY ONE TIME, is sufficient to damage the pump. Hmmm... Sounds reasonable, Tech?

Awating your expert opinion.
 

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Cleaning the throttle body is the easiest and fastest thing to do.

I think he was thinking the same thing as me.That is true if someone runs an electric pump out of gas or very close it can damage the pump.It might be getting hot and cutting out at times.
 

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Discussion Starter · #18 ·
So, that means:-

1) Clean the throttle body first,
2) If it still don't work, then replace the fuel pump relay or body(?)

$$$ flying....
 

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Yes try cleaning the throttle body first.
Then I would look at the Fuel pump.

A good investment might be to get a fuel pressure guage and keep it connected and watch and see if you loose fuel pressure when it happens.
 

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Discussion Starter · #20 ·
Ah, OK!

Spent two hours with one of the 'otai-s' (lit: Old-Timer Experts) yesterday on this. He works at the Volvo dealerships during the weekdays, and on weekends, he opens his own small, and unwavering, mom-and-pop kinda outfit, deep in one of those hard-to-reach places. (
)

Anyway, I told him the whole story, from A to Z, so that he can make that all-important informed decision. After lighting MY second cigarette (he doesn't smoke) he quickly ordered his assistants to do a few things, and all the while, I was with the car. One got into the driver seat, the other popped the hood and listened. After a few revs, the chief revealed that he doesn't think the fuel pump is at fault.

In fact, given the age, he would be happy to replace the pump, but he believes the 'magnetic' sensor of the rev/pickup/impulse sensor was more at fault. Either that, or there is something wrong with the flywheel. But then again, he asked me to listen to the engine for some sharp (?) sound of metals in disagreement, and there were none.

In the end, I agreed to change the sensor, which came up to RM280.00 per piece. The minute I saw the 25-centimenter long rubber string - I went 'HUH?' Realising I was a bit perplexed, one of the assistants explained to me how the sensor works. (Well, since I don't know squat, any kind of lesson is good for me lah - even if he was BS-ing me all the way to Neverland!
)

On the way to get at the rev/pickup/impulse (I have NO idea if they are called the same or interchangeably) sensor, he noticed that one of the small small gateways on the air filter duct was broken. He fixed it as well (by glue only), and said was supposed to be good for about 6 months or so.

And on top of that, I asked the chief to also clean the throttle body. He took out the throttle head(?) as well, and brushed them all clean. All the while, I gave them a good look of what they actually did, and asked my idiotic questions everytime I felt the urge to. Where I could help, i did, but my hands were not dirty at all lah (unfortunately - as I'd love to learn more).

Finally, one of the assistants looked at my headlights and asked if i'd like to have them cleaned? I asked, "Eh, can clean ke?" He said, "Of course, boleeeeeeeeeeeeeehhhh"... And again, I watched with full interest how easy it was to remove the clips, the side lights and the underlatch to clean the headlight glass. Now, my headlights look great!!! Unfortunately, can't open the side-lights due to time limits. (But I'll find the time to do them at home...)


One thing about these people is that, they really can work fast! I think they always time themselves, and try to break their own record, because everytime they start on a work, they always give the wall-clock a little glimpse, and when they end, the do the same.
Talk about self-development, huh?

And oh, Labor charge for everything above was only RM20.00! That's really cheap, unless they bloated the sensor with some labor as well, already lah.
Because they used original volvo parts, the standard warranty applies. And because it is not a common problem, just one of those things that fail on you, probably due to wear and tear, I felt really nice leaving the workshop. Indeed.

And that, Tech and friends, was how I spent my Sunday afternoon out.

Not to mention how now I can do my own headlight-cleaning (
) and probably with a little supervision, throttle-body cleaning!
 
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