Question about 1991 Geo Storm

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1991 geo storm,sohc

Two of my injecters aren't spitting any fuel & I know there good. I thought maybe a wiring problem but I checked all the wire's & there good. any input would be great thank's.

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You may want to check and see if you have enough fuel pressure possible weak fuel pump

Posted on Aug 15, 2008

Check ur feul rail 4 leaks with ac runn,n it will look like antifreeze.go,n out 2 replace my hope that helps

Posted on Aug 04, 2008

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What will cause a 1990 geo storm sohc to run rough or not start? Changed, plugs, wires,cap, rotor?


Except for the ignition coil, that about takes care of the secondary ignition system. You should check to see if you have a good strong blue spark at one of the spark plug wires. If no spark, check the coil and the crank position sensor for one place to start, also the ignition control module. If you do have spark, the ignition should be good, and then you could concentrate elsewhere.
If there is a schrader valve on top of the engine-a fuel pressure test port-it would be easy to check fuel pressure. Autozone and others loan a fuel pressure tester. Possibly, a 1990 Storm may require a temporary "tee fitting" in the fuel line somewhere to test pressure. Look for the test port- it may have a cap that unscrews. It would be located in the fuel rail or the line to the injectors.

Beyond that, other problems could be dirty injectors, a malfunctioning EGR valve, a large intake manifold gasket leak, or worst case, a mechanical internal problem. If it gets to that, perform a compression test. If you have good compression in all cylinders, it should be good internally.

Nov 04, 2014 | 1990 Geo Storm

2 Answers

1991 geo storm gsi,Was going down the road fine and all of a sudden It cut off and cannot restart it what could be the possible problem or cuses.


same answer for all cars made 1920 to now.
never restarted ,ever ? gee , a little hint...?
1: lost engine compression hot, (gee forgot to do the 60k serviice/)
2: lost spark , yes, check spark at all 4 cyl. if bad check coil spark.
3: lost fuel or too much fuel called flooding.

one removes a spark plug, it drips of fuel , say all 4.
flooding.
crank motor at WOT, wide open throttle to clear flooding.
if the spark is good and the spark tips are dry, then try test fuel
if car starts and dies. then you lost injection.

easy huh> with the above you know exactly why it fails.
compression bad
spark
fueling.

1991 i think is TBI single injection engine, i can look it up but
no i wont. we need to do the tests first to get there.

Oct 03, 2013 | 1992 Geo Storm

1 Answer

Cant find the fuel injection relay on 91 Geo storm


the 91 cars , typically have 3 fuses that must be good.
to get fueling.
why do you need to find a non existent relay.?
state the symptoms, and stop guessing.

3 fuses that make the ECU operate
then the ECU drives the inector, directly.

the full schematic is in the FSM and here
alldata dot com.
or in most public libraries, in the e-sources , directory, click Autorepair (free too)

my comment is to a USA person, unstated. that.

Sep 27, 2013 | 1991 Geo Storm

2 Answers

1992 geo storm replaced distributer have fire out of coil wire but no fire spark plug wire module in distributer checks out


storm is an ISUZU
and had 3engines,which one? below is off wiki on storm.
1.6 L SOHC 4XE1 I4
1.6 L DOHC 4XE1 I4
1.8 L DOHC 4XF1 I4


coil makes 50,000 volts (even 1kv makes fire, but is too weak spark
spark plugs dead , right? all 4 right?
ever do a 60k mile tune up ? if not why not, it gets new spark parts then..
also, if the cam timing is off. the dizzy sparks between towers
make the distributor useless, it cant distribute spark.
so the first tests are .
static ignition timing. (yes, a tool, called a timing light for $20)
if timing is good the the wires HV are bad.
if timing is bad, bingo..... this is the first test on any motor.
if the timing belt or chain on any SOHC or DOHC engine slips
the dizzy will be way to h3ll off.
learn to use a timing light, and works 100% cranking.

look at that distributor cap (replace it)
see the coil wire , center, that is at 50kv spark.
and see that rotor, if the spark is good at the cap pins 1 to 4
then the dizzy is timed.
if the spark dont reach the spark plugs that means
the wire are bad or the spark plugs are shorted, or both.
its that simple. using a real spark testing tools tells you the KV.
kv = kilovolts. the best tools $5 bucks have and adjustable gap
this car is not 100kv, like newer cars and must be set (tool) to 50kv or tad less to show full powerful spark.

take care not to get shocked, keep hands off the parts
as friend cranks (or remote start button tool)

Aug 22, 2013 | 1991 Geo Storm

1 Answer

Where do you conectect mto the computer on the 91 geo storm to get a reading


For 1990 Geo Storm 2+2 1.6L MFI SOHC 4cyl the OBD Diagnostic Link Connector is located front seating area, passenger side, under dash, above kick panel, mounted rear of glove compartment.

Hope helps

Apr 21, 2011 | 1991 Geo Storm

1 Answer

1991 geo metro car misses at low rpms


if its only missing at low rpm, then I would think the problem is electrical. try replacing the spark plugs and the plug wires and the wire from the coil to the distributer, and make sure the plugs are gapped properly. that will probably solve your problem.

Sep 04, 2009 | 1991 Geo Storm

2 Answers

Fuel injection problems with my 1990 geo storm


fuel filter injectors id first check fuel pressure with fuel gage may be weak fuel pump intake gaskets would check around manifold also check batt terminals/cables if loose ecm not getting proper voltage can effect performance could be the ecm as well if u love the car dont give up always look for simple solutions first good luck

Mar 26, 2009 | 1991 Geo Storm

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