Hopefully some body can confirm my suspisions..... In the last couple
of days my 88 Audi 90 s 2.3 5 cyl lost a dramatic amount of power..
the systems are this...
If i press the gas pedal to the floor, i lose most of the power, I can
slowly accel by slowly pressing the gas, but it requires i don't rev
much over 3k rpm....
I have already done the following:
Fuel filter/air filter changed...
Tune up- plugs, wires, cap and rotor
Checked timing... Cam, Crank and distributor are all timed correct
Changed bad o2 sensor
My suspision is it is the fuel pump... does that sound like the next
logical step? the only thing i have not done is try to adjust the
mixture.. but that is for me to leave up to the pros..
Is there any way i can check the fuel pressure myself? i don't want to
$200.00 or more on a new pump if i can avoid it.
Thanks for your assistance
Is the boot from the fuel distributor to the throttle body in excellent
condition and tightly clamped?
Intake manifold tight?
Cat. converter in good condition and not clogged?
Fuel pressure differential regulator receiving electricity?
Did you remove any fuses from your fuse box lately?
just some thoughts!
Before you criticize someone, you should walk a mile in their shoes. That way,
when you criticize them, you are a mile away from them, and you have their
shoes. Frieda Norris
Yes. No tears, tightly sealed.. i just changed the air filter so i had
to remove it.. it is in good shape.
It's never been removed, so i can only assume yes, i will check that.
Cat Core is punched.. i am in process of replacing the cat, therefore
it could not be clogged, but is not in good condition.
I do not know.. this i have not checked.. i'll have to look it up in
my bentley manual and check that.
None at all.
At this point, the car still goes, but has no power in acceleration..
it takes me nearly as long as an 18 wheeler to get up to highway
speed... maybe not quite that long, but if i floor it,the car loses
major power, plus if i shift down and the engine revs over the 3k
mark, even without pressing the gas, the same thing happens... seems
like it can not get enough fuel to run the engine at those higher
speeds. that's is my best guess...
It certainly sounds very like the symptoms when the fuel pump packed up on
my old '89 90 (KV engine, 2226 cc, no turbo, no cat) a few years back. On
the UK models the pump is on the right had side of the car underneath and it
gets quite a lot of muck showered on it. Not sure if yours is the same.
Replacement is a DIY job. It's not particularly difficult, though not
pleasant. Best to start with an empty tank. When you loosen the hose feeding
the pump from the tank, you discover what a gravity feed means. Needless to
say my pump had decided to give up the moment after I'd completely filled
the tank. IIRC I improvised by plugging the hose with a cork and tightening
a jubilee clip round it while I got the pump off, thus minimising spillage,
but it would obviously be better to get the tank down to a gallon or so and
then just drain it into a can.
That car was perhaps the best I've ever owned.
It would figure that i just filled up the tank yesterday too.... Well,
as long as the car is still running, i'll just have to try to use up
as much of the gas as i can getting around town... at least if it
gives out locally, i won't have to get towed very far.
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