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JeremyC · Posted: Fri Mar 18, 2011 2:01 pm Post subject: TB gasket change

OK, I'm proably going to attend to my throttle bodies this weekend.

Where is the best place to drain the coolant from so that I don't get coolant in the heads?
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'93 Black 33 1.7 16v

paulhide · Posted: Sat Mar 19, 2011 12:52 pm Post subject:

Hi Jeremy, probably not correct, but I always undo a rad hose and drain from there.
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RFlower · Posted: Sat Mar 19, 2011 5:29 pm Post subject:

Drain via the bottom rad hose first as Paul said, then drain each cylinder head individually via the drain plugs on their bottom surfaces (from under the car).
There are bolts with similar heads to those on the drain plugs; the drain plugs are the ones with washers under them.
After you remove the drain plugs you might need to poke a bit of wire in and wiggle it to remove built up rust before the water will run out, if they haven't been removed for a while.
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Dick Flower, Nr. Carcassonne. '94 Trofeo 1.4 ie (F), '93 Imola 1.3/1.4 ie (now for breaking) (F), '91 1.7 ie (GB)(spare car), '86 Sprint 1.5 QV (F). '87 VW Syncro camper (F), '73 NSU Ro80 (F), '99 Fiat Seicento (F)

BigAl · P4 Joined: 06 May 2003 Posts: 2996 Location: U.K Surrey

Ahhhh, so thats how you tell which ones are the drain plugs, the amount of times I got it wrong lol, thanks.
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x2 33 16v
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JeremyC · Posted: Sat Mar 26, 2011 10:33 am Post subject:

I guess the TB bolts have a torque setting, anyone know what it is?
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'93 Black 33 1.7 16v

JeremyC · Posted: Sun Mar 27, 2011 11:46 am Post subject:

All done and unfortunately the problem is still there.

As with all big jobs I could convince myself it is better but only maybe.

So, might next candidate for low speed misfire are:

Injectors
The sensor on the side of the air filter side TB, is this the MAP sensor?

Your thoughts?
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'93 Black 33 1.7 16v

john 33_16v · Posted: Sun Mar 27, 2011 3:36 pm Post subject:

The sensor is the throttle position switch.

You could initially try unplugging it to see what happens, and then they can be adjusted. Search on here as there should be posts about how to set them up.

From memory the little bolts on the throttle position switch are tricky to get to and get easily dropped inside the cambelt cover, so worth blocking the gap/s with rag/s. I think i replaced the little bolts with items that had a phillips screw head instead of the hex head.

Hope that helps.
John
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If it aint broke, fiddle with it until it is!
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93 33 16v Mirtle Met
08 Fiat Grande Punto Exotica Red
90 Yamaha FZR600 Genesis- Silky white/red/blue

paulhide · Posted: Sun Mar 27, 2011 8:33 pm Post subject:

Shame you're not coming to SAD, I could check the car out.
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Owner's Club 33 Registrar. Now from P4 & S2 1.7 QV
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JeremyC · Posted: Mon Mar 28, 2011 12:10 am Post subject:

Just back from a mighty VdGG in London.

What happens if you unplug the throttle sensor, does the car still run but the ecu has less information to work with?
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'93 Black 33 1.7 16v