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idle problems

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goonie

15+ Year Contributor
251
4
Mar 2, 2004
soutomaior/spain, Europe
hi there
after i installed new cams(272/272) and a new timing belt
i cant get the car to idle
i did a boostleak and isc test and they where ok
so i tighten up the trothle cable a bit so now the car idles at 750/850 with the tps at 12,5%
i couldnt get the car to idle with the biss screw
now i discovered that my af gauge does not work and the o2 readings on my logger are
0,00 to 0,01 from idle to 3500 rpm
also my fto2 trims keep stuck at 100% in this same rpm range
(this is all on mmcd)
i put in a new o2 sensor and another ecu just to make sure but still the same results

also checked my timing belt all the marks alligned perfect

so did i overlooked something:confused:
also my vacuum dropped from -21 at idle to -10/13 at idle and when i push the trothle it goes to -21 and than to 0
any ideas

thanks.
 
base ignition timing is 5* btdc
idle hangs around 750/850 rpm
i have to check the cam pos sensor
i will let you know in a few weeks

by the way the other issues are solved (fault of a/f gauge wire to connector:D )
gauge works ok and 02 trims are back :thumb:
 
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