Question about Geo Prizm

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I hve a 1991 geo prizm, has spark,has new fuel pump,good fuel pressure,has fresh gas, good altenator,The car turns over and just wont run.the car set up for a year.

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Sitting for a year change out spark plugs

Posted on Mar 23, 2011

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Car idles fine, but sputters, bogs and dies if gas pedal is pressed.


new spark plugs this decade. (a tune up?0
the filter is part of all 60k tuneups. letting it clog wrecks good pumps.
my wild guess, its lack of fuel flow, do to old filter.
or low fuel pressure.
car is identical to a Corolla. so is not unique or rare as some Geo cars are.
the cam belt not changes, invites valve kissing piston tops. BOOM
end of engine. (costs more to fix then worth of car)
the word is bogging, my engine bogs
if if bogs WOT (wide open throttle) and dont catch up < ITS NOT THE TPS. ever.
tps bad causes short bogs, called hesitations.
The map sensor , is what measure air flow and the ECU matches fuel to this air flow.
my guess, is it does that, but fuel pressure is like 15PSI, bad.

Apr 14, 2015 | 1995 Geo Prizm

2 Answers

1996 geo prizm will turn over but will not start.


CHECK FUSES TO MAKE SURE FUEL PUMP FUSE IS NOT BLOWN. MAKE SURE THAT YOU ARE GETTING GAS FROM THE TANK BY CHECKING THE FUEL LINE AFTER THE FUEL FILTER. SOMETIME THE FUEL FILTER CAN BE CLOGGED UP.

Nov 28, 2014 | Geo Cars & Trucks

2 Answers

1995 geo prizm with no spark


no spark at all 4 spark plugs or 1. (using fresh test spark plug?)
is the distributor rotor turning , cranking.?
was the cam belt changed at 60,000 miles, as you must?

Mar 03, 2013 | 1995 Geo Prizm

1 Answer

95 geo prizm wont start


wont crank or will not start.? 2 unique things. no crank always results in , no start (unless you push start the car)
hot wiring the fuel pump relay or any relay in the EFI system , invites
blowing the ECU to kingdom come, bad to the bone that.
I fixed them for 50 years. (electronics controls, so know it !)
you do know its really a toyota right?
what ENGINE? each works different.
my prizm text dump.
89-02
joint venture, GM/toyota with 3 engine used.
1.8L or 1.6L
toy engine, 4aFE, 7AFE or 4AG
open hood look
or use the GM RPO tag
or Use the VIN to find motor used.
for docs?
ebay
search
Geo Prizm factory service manual, Duh?

http://www.ebay.com/sch/i.html;jsessionid=D19D723C2EDB4A9FE12E7C01C0677129?_sacat=0&_nkw=geo+prizm+shop+manual&_nkwusc=geo+prizm+shop+manaul&_rdc=1


does car start with test fuel and run, until the fuel runs out.
do you have fuel pressure, while reading the FSM , way of doing it.
some cars only make fuel pressure, cranking and runing.
other make pressure, for 3 seconds key on, and cranking and running only, and all cars drop pump and injections when ECU sees spark die.
that is why stating which Toyota engine YOU HAVE, helps with diagnosis. and please stop hot wiring your car and learn to use a voltmeter. Ive seen $3000 ECU blown up do to bad mechanics.

Feb 18, 2013 | Geo Prizm Cars & Trucks

1 Answer

Turns over will not start. have alread changed the spark plugs dis. cap and rotor. Could it be th coil? or a fuel system problem?


First check for spark at any of the sparkplugs.If you have spark then it is more then likely the fuel pump.You can'nt check the fuel pressure unless it is running.The fuel pressure is suppose to be 38-44 with the engine running.

Jan 20, 2012 | 1994 Geo Prizm

1 Answer

Ran out of gas in 92 prizm...new fuel pump, new fuel filter, theres fire in plugs, fire in fuel ignitors, what could the problem be...


IF YOU RAN OUT OF GAS WITH NEW FUEL PUMP.MORE LIKELY YOU DAMAGED NEW FUEL PUMP NEVER NEVER RUN OUT OF GAS.GAS KEEP FUEL PUMP COOL AND KEEPS FUEL PUMP LUBRICATED

Sep 18, 2011 | 1992 Geo Prizm

1 Answer

Have 95 geo prizm with no fuel pump relays and fuses are good. when i jump the relay i can hear the pump work.. is there any other sensors that would cause the pump not to work


The oil pressure sending unit will stop the pump from running. This cuts the car off if it senses no oil pressure. Same sensor that gives you the pressure reading or the dummy light.

Mar 17, 2011 | 1995 Geo Prizm

1 Answer

1997 Geo Prizm - does not start


sounds liike a fuel problem, turn key on without starting listen for fuel pump kicking on if it does now check the connections at the pump/fuse if it is kicking on the you can check the fuel pressure by checking the little valve on the fuel rail next to the intake looks just like the air valve on your tires if there is no pressure then check fuel filter.

Jul 15, 2010 | 1997 Geo Prizm

2 Answers

I need location of a 1995 Geo Prizm 1.8 fuel pump relay


I think it is under your rear seat cushion. Remove the rear seat cushion, you'll see the gas tank cover.

Jun 06, 2009 | 1995 Geo Prizm

4 Answers

My girls 1990 Geo Prizm keeps stalling. After it sits for 10 minutes or so, it start back up, but sometimes will only make it a block or two before dying again..It is an intermittant problem, but it...


next time it stalls pull the plug wire from the spark plug. have an extra spark plug with you and stick it in the boot. lay it across a known ground and turn the car over. its probably not firing.. sounds like its an ignition module faulty that acts up when it gets hot

Jun 05, 2009 | 1990 Geo Prizm

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