1988 Saab 900 fuel injection

1988 SAAB 900
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BHE
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Engine Mechanical problem
1988 Saab 900 4 cyl Front Wheel Drive Manual 100,oo miles

Hi. my problem is the motor goes into a cloud of unburned fuel after approximately 4 mins. Using the Bentley manual as a reference checked all circuits and grounds. Changed ecm,mass air flow, o2,pressure reg. (2.4 bar) and NTC. I checked the resistance of each sensor and was O.K. Parts were used.Also is the timing mark on the plastic cover accurate for setting up a new chain and gear set? Compression is between 160 -170.Burn-off fuction worked on air mass
Sep 24, 2008 at 7:19 PM
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2CARPRO JACK
  • ASE Certified Mechanic
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  • ASE Certified Mechanic
Did you check the coolant sensor? sounds like it is going into "closed loop" and going rich.
Sep 26, 2008 at 8:08 AM
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