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engine momentarily dies, CAT light comes on

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Old 12-20-2005, 12:06 AM
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Default engine momentarily dies, CAT light comes on

On light throttle lately my car dies for an instant and the CAT light comes on. No codes show up. Clues?
Old 12-20-2005, 12:17 AM
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Default vag scan injectors and voltage measuring blocks-run log until it happens

then you may be able to determine wether it is electrical or fuel.
does it only happen at idle or under load?
there is an air control for the injectors valve at address 035 and an idle air control valve that may be faulty[this requires manual check]
If you need doc please email me
Old 12-20-2005, 02:37 AM
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Yes, sounds like it could be an air leak on the intake
Old 12-20-2005, 04:24 AM
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Default check your engine speed sensor

part #077 905 3801C
I had the same issue. My car began to get progressively worse
Old 12-20-2005, 04:43 AM
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Default Did it go into limp mode? When I put my cone filter in. It was a really hot day and the rubber

hose must have stretched a little to allow the cone filter to slip off, with the MAFS causing CEL, and PRND43 to light up.
Old 12-21-2005, 12:27 PM
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Default Re: check your engine speed sensor

Do you mean the one inside the tranny?
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