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Join Date: Jun 2009
Posts: 29
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Engine stalls at times
I have a 1986 911. Problem is car starts okay when cold and allows engine to be revved smooth as it warms up, however when engine reaches normal operating temp it runs erratic, doesn't allow normal smooth revving of engine. At idle it runs ok sometimes then sometimes it will choke out and all times will not allow smooth revving...very rough. Car has new fuel filter, battery shows 14.0 volts at idle and no apparent loss of vacuum....(removed oil cap..no change). Help ! Thanks.
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10-09-2016, 07:08 AM
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Member 911 Anonymous
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Quote:
Check behind the throttle body, cruise control of breather cap on the engine block on top at the "triangle" area.
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'85 Carrera Targa Factory Marble Grey/Black * Turbo Tail * 930 Steering Wheel* Sport Seats * 17" Fuchs (r) * 3.4 * 964 Cams * 915 * LSD * Factory SS * Turbo Tie Rods * Bilsteins * Euro Pre-Muff * SW Chip on 4K DME * NGK * Sienes GSK * Targa Body Brace PCA/POC |
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10-09-2016, 09:27 AM
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Join Date: May 2002
Location: St Louis
Posts: 4,211
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You could measure the resistance of your Cylinder Head Temperature sensor (CHT) when it is warm
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Rick 88 Cab |
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10-09-2016, 11:22 AM
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Location: Ontario Canada
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just jumper it out with a paperclip once warm. if the problem goes away its your cht sensor. im betting that's what it is.
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1976 Yamaha XS360 ( Beats Walkin') 1978 911 SC Targa ( Yamaha Support Vehicle ) 2006 Audi A4 2.0T (Porsche Support Vehicle ) 2014 Audi A4 2.0T Technik (Audi Support Vehicle) |
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10-09-2016, 05:27 PM
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Thanks for suggestions....will check for leak and CHT issue.
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10-10-2016, 06:19 AM
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Can't find any leaks, but confused as to how to test that CHT sensor ... can you elaborate a little more, thanks.
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10-11-2016, 06:26 AM
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Join Date: Jun 2009
Posts: 29
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Hey, just thinking here...if dash temp indicator seems to be working normal and indicating the is warming up normally to usual level wouldn't this mean CHT sensor is functioning ok ?
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10-11-2016, 06:32 AM
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Join Date: Jun 2009
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Are there two CHT sensors or just one on 1986 911 3.2 ?
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10-12-2016, 07:21 PM
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stalling
Had the same with my 87, looked for vacuum leaks, CHT, and finally turned out to be the O2 sensor
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10-13-2016, 07:43 AM
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Join Date: Jun 2009
Posts: 29
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Thanks for input on O2 sensor....currently waiting on new CHT sensor to arrive. Couldn't find any leaks so hoping CHT or maybe O2.
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10-13-2016, 04:42 PM
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Marble Grey
