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Registered
Join Date: Nov 2020
Posts: 2
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1987, 944s running lean.
What's up, I have an 87 944s and I'm having a couple of issues. When I bought the car I didn't know it had several different injectors in it... it actually had one injector for a turbo model and one for a 928. The wrong injectors caused a misfire, So I've now replaced them with remanufactured genuine Porsche injectors. However, the car is now running lean. I've put sea-foam through it once to try and clean all of the old gunk out. after I did that I inspected the injector wires and I've replaced them all. the car runs and drives with no problem but it is definitely running lean. I replaced the coil, and the cap and rotor and the wires. The only three things I can think of that would cause the car to run lean are, a.) timing, b.) o2 sensor, and c.) the DME?
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11-06-2020, 07:14 AM
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Registered
Join Date: Jul 2004
Location: Upstate New York
Posts: 3,257
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What is your fuel pressure reading?
If good, then your coolant temp sensor might be bad. Maybe a bad ECU.
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Good luck, George Beuselinck |
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11-06-2020, 09:52 AM
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Kessel run in 12 parsecs!
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Have a porsche dealer check it out, the can do a diagnostic on it and see whats up..
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Getting old sucks, bring back the good old days, this new stuff is for the birds.. |
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11-06-2020, 06:09 PM
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In the Fires of Hell.....
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Vacuum leak?
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PCA Instructor: '88 951S - with LBE, Guru chips, 3Bar FPR, 1.3mm shimmed WG, 3120 lbs, 256 RWHP, 15 psig boost |
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11-06-2020, 06:20 PM
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Registered
Join Date: Mar 2008
Location: Nashville, TN
Posts: 4,046
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how are you so sure it is running lean?
do you have a wideband O2 hooked up, or is it failing smog? |
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11-07-2020, 03:30 AM
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| lean fuel , spark plugs , timing belt |
Vintage Ride.
944 Turbo
