Question about 1994 Geo Prizm
I would pay more attention to the air flow sensor and mass air flow sensor, putting this on a diagnostic machine will pinpoint the errors stored on the onboard computer. both sensors can be cleaned by a competent mechanic, most mechanics don't want to, they prefer just to swap items out these days because of costs. get a reading, then you will know for sure. good luck.
Posted on Oct 20, 2013
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Posted on Jan 02, 2017
SOURCE: 1994 Geo Metro sputtered and
have a budy turn the key on but do not try to start you take the gass cap off and lission to see if you hear a whine or buzz for bout 2 sec try turing the key on and a few times if you hear a buzz then the fuel pump is probabley workinf if not then check fuse and relay first also check timing belt
Posted on Aug 29, 2008
You might want to see if the timing belt might have jumped.If you getting gas and spark it should of fired.Try this Hold the gas pedal to the floor and crank on it for a few.By doing this you shut off fuel flow to motor and it tries to burn what has been injected.Don't let off of the pedal or make sure to press down before cranking.Maybe it flooded it self by cranking slow..If car still does not start after cranking the motor over a few times spay some starting fluid into the intake or throttle body and try to start.If fires and misses back fires has a slow pedal response its more than likely the timing belt....
Posted on Mar 29, 2009
SOURCE: 92 tracker is losing power
squawk: started to miss and bog down
is this a 8v or 16v.? the cmp is not noted for failure, rare.
your failure to get the CEL DTC codes is bad.
you must NEVER ignore DTCs'
pre 96's the light comes on and it means gross sensor fail.
(reset the ses mileage switch on federal versions of car )
ses comes on 50k and 80k repeat and not found on any Calif car.
place the jumper (paper clip ) and stop guessing.
get that code.
if car dont restart , you can keep DLC jumper installed and it will tell you what failed.
the ECU will tell you what failed, just listen to it.
how ever if no CEL , that dont mean all is well.
this is a hard problem.
post here if real hard. get top help.
Posted on Oct 22, 2009
The problem I've had with metro's is the pre-cat located in the exhaust manifold itself. If you don't live in California, you don't even need this piece of junk. It overheats the heads and makes it crack, or makes the head gasket leak. Removal is rather easy though. Remove the exhaust manifold and chip that baby out, use a shop vac to remove the pieces. If your model don't have one, it will usually be the one on the exhaust pipe itself. But you already replaced that. Try a short test run with the manifold disconnected and see if acceleration improves to rule this out as a potential problem. Also check your TPS, (Throttle Posotion Switch) with an ohm meter to be sure it hasnt developed any dead spots. Yet another source of trouble seems to be a stuck EGR (Exhaust Gas Recirculator) valve. This will allow too much exhaust to enter your fresh fuel air mixture, decreasing detonation, and slowing acceleration.
Posted on Mar 09, 2010
Testimonial: "Thanks so much! That will give me some new stuff to look at. I really appreciate your help!"
Quite a few things can cause a car to die after idling for awhile, but if you have verified that the fuel pressure is actually dropping when the motor dies, the likely culprits are:
1) Electric fuel pump in the gas tank is bad
2) The fuel pressure regulator (on the throttle body) is bad
3) An electrical problem in the power to the fuel pump (like a bad fuel pump relay or lose ground wire to the relay's circuit)
Posted on Mar 12, 2010
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