Hi,
on my 1993 Saab 9000CS occurs an "Check engine" fault code, with one flash at first and then three flashes. Its an trionic, but I can´t find the explanation for the one on:
I don't know what one flash is, but here's the rest of the list:
Number of flashes - Function
2 Manifold absolute pressure sensor 3 Temperature sensor, manifold 4 Temperature sensor, coolant 5 Throttle position sensor 6 Oxygen sensor 7 Adaptation 8 Purge valve (EVAP valve) 9 ECM, internal fault--
The first "flash" isn't a flash, but only an indicator (for 6 secs):
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Am 23.02.2010 19:23, schrieb Henrik B.:
Hi, its one with an 0.4sec duration, and it appears as fault code one.
Greetings Axel
My guess is that it's one of the vacuum hoses has worked loose. That is just based on my experience from my 174,000 1993 Saab 9000 CSE that this is the most common "Check Engine" fault. A small hose near the manifold had a split end, hence I cut an inch off and refitted. When it happened a second time, I fitted a small length of extra hose with a stud in between to connect the hoses. That has been a stable solution for many years now.
But beware that their could be more serious reasons for "Check engine",
In this case it's the manifold temp. sensor...
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