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Registered
Join Date: Nov 2000
Location: Baton Rouge, Louisiana
Posts: 521
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993 hesitates after washing or hard rain
I have noticed recently that my 993 hesitates at lower RPMs after a washing or hard rain while driving. After sitting overnight, car runs fine the next day. Besides the obvious of not allowing water to gush into the rear grill, any other thoughts on what is happening and how to prevent this?
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Mark Howard Baton Rouge, Louisiana 2023 Taycan GTS |
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10-10-2002, 08:50 PM
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Join Date: Mar 2002
Posts: 3,563
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Water on the ignition components (leads, dizzy etc)!!!
My 3.2 Carrera use to do that exact same thing after a wash/heavy rainfall. Once the water dried off, she'd run perfectly. To test that theory, I once used a hair drier on the dizzy (after a wash) to dry up the water around the plug leads. Never had the problem after a blow dry. However, since fitting the new Magnecor leads, the problem hasn't re-surfaced 
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Merv '89 911 Turbo Cab Protomotive MAP ECU, Twin Plugged Heads, GT2-EVO CAMs, 3.3L fully finned P&C's, ARP fasteners, C2T head gaskets, Titanium Retainers, Turbo spec valves, springs & guides, 964 splash valves, GT35R BB turbo, GSF Stainless Headers, Magnaflow Exhaust, Full bay Intercooler, TiAL 46mm w/gate, TiAL 50mm BOV, Apexi AVC-R EBC, SPEC Stage3+ Clutch kit, Crane CDI Ignition
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10-10-2002, 09:52 PM
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How's the condition of your engine wiring harness? Any indication that you might have an issue with insulation deterioration like the '95's?
My brand-new (build date of 5/22/02) 993.607.016.05 harness arrived earlier this week... I'm replacing mine this weekend!!! 
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1995 C2 w/Tiptronic, Stongard, HID's Last edited by deltajetfixer; 10-10-2002 at 10:45 PM.. |
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10-10-2002, 10:40 PM
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Suspect Plug Wires
Mark,
My '83 did the same thing after washing it a few weeks ago. I immidiately assumed plug wires or leaky injectors. I pulled the car out of the garage that night to look at the wires in the dark. Amazing, I had my own little fireworks display lighting up my SS braids on the plug wires. I have a set of Magnecore ready to put on. I think this should solve the problem (probably won't hurt my hesistation problem either). If not if this doesn't fix it I will continue to investigate the ignition first. I also bought some di-electric grease and coated some of the ignition components (base of the distr. cap...). Won't know for a while if this fixed it. I'm up on jack stands for a while working brakes. Gordo
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Don "Gordo" Gordon '83 911SC Targa |
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10-11-2002, 03:30 AM
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Join Date: Dec 2001
Location: MA USA
Posts: 2,938
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I'll bet you need new wires. Hose down you motor at night and then idle while looking at the motor. Maybe you can see the ignition leaks
Merv, I never have a problem after a blow dry either. ;-)
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Dean 911 SC turbo, 3.0L 930 motor, G50, 930 brakes, DTA EFI, 352 RWHP DynoDynamic dyno, |
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10-11-2002, 05:43 AM
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1995 Porsche 993 C2 Coupe 3.6
