Question about Geo Prizm

2 Answers

1996 Geo Prizm

Replaced all spark plugs, and since then the car chugs/jerks when accelerating. Once I'm past 50mph it's fine, but at lower speeds it has a hard time accelerating. It stalled out on me twice when stopping at a stop sign, could it be the fuel pump?

Posted by on


2 Answers

  • Level 1:

    An expert who has achieved level 1.


    An expert that got 5 achievements.

    New Friend:

    An expert that has 1 follower.


    A rookie expert who has answered 20 questions on their first day.

  • Contributor
  • 30 Answers

You have a bad spark plug wire. Just, because it's new doesn't mean it's good

Posted on Apr 12, 2014

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • Geo Master
  • 20,706 Answers

Could be lots of things, its EFI.
what you mech, does, is use tools and gauges. to gather evidence.
he also has a scan tool , to see what EFI is doing.
That jerking is called Misfire (not arguing names, ,but using the right name allows better google searches or getting help)
this can be (lost spark or lost fuel or too much fuel)
the prism has distributor, and if the car has and old cap, rotor and wires. then they are no good. finish the 60,000 mile tune up.
if its misfiring, it might be:
1: bad spark.
2: bad fueling.
bad spark ? tune it up fully this time.
bad fueling, is complex.
sure fuel pump, but why does the pump magically work on over 50 demand which is more demand?
my guess is lean misfire. at cruise.
when you go over 50mph the ECU can drop using the oxy sensor.
this is normal and goes rich.
so maybe the 02 front sensor is bad or an exhaust leak near it.
a scan tool can find this in a jiffy , a $50 tool)
you see the oxy sensor ,reading wrong or dead at low speed cruise.
ok stop sign stalls. (in order of most common 1st)
1: EGR main sticks open (clean it)
2: running rich and it misfires so bad, it stalls.
fuel pump reg bad? and fuel pressure way too high.
3: fuel starvation.
what a tech does, is make car fail, and look at the sensors to
see what is going wrong. Evidence, is first. guessing at parts never.
lets see the op guide shows the 60k as....
new cap,rotor wires.sparks. (they dont last 100k, sorry)
new fuel and air filter.

Posted on May 18, 2013


6 Suggested Answers

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017

  • 142 Answers

SOURCE: 92 Grand Marquis chugs and dies when at an idle. Also jerks alot

The throttle speed control valve must be cleaned. The valve is located near the throttle body throat. It has an oval flange with two bolts. Unplug it, take it off and clean it out with throttle body cleaner. You will notice a big difference. This is a common issue with this engine.
Please remember to rate this fix.

Posted on Feb 16, 2009

  • 6674 Answers

SOURCE: 1995 jaguar xj6 stalls once you stop at the stop signs

Look for an IAC sensor (motor) Idle Air Control.
Usually located on side & front of throttle body. Not 100% sure which type you'll have but if you have pintle type (pointed end) Remove it, spray it well with throttle body cleaner as well as port it came from, and retry. If it cures it temporarily & starts to do it again, replace it.

Posted on Aug 21, 2009

  • 133 Answers

SOURCE: 1996 2.2 liter. Starving for fuel

There are a few other things taht could be causing fuel starvation. First of all, did you pull the injectors and clean out the individual filters? There are small, conical screens inside the top of each injector, and they could be clogged. Second, There could be some carbon build-up on the intake valves, which would act like a sponge for the fuel after initial start-up. A can of BG44K fuel system cleaner from NAPA will get rid of that. If it is neither of these, the fuel pressure regulator could be leaking. Other than this, the car would need to be diagnosed by a shop before action is taken. I hope this helps you!

Posted on Dec 04, 2009

Testimonial: "I ended up taking the car to a local shop for diagnosis. It turns out that the fuel pump is week and not supplying enough pressure to the motor. "

  • 90 Answers

SOURCE: my 94 geo prizm sputters and jerks during

for that cost you could have taken it to a mechanic and had the compretion tested, that is what needs to be done. at least 90psi and all cyliders sould be within 15% to that.

Posted on Mar 16, 2010

SOURCE: car chugs and jerks like crazy while cruising

Determine whether the jerking is engine or transmission related. One way to determine if it is the transmission lock up converter is acting erratically is to down shift out of OD. And see if jerking persist. If it goes away suspect transmission to have problems with torque converter or TCC solenoid . If it doesn't go away determine whether or not the engine sounds to be misfiring. If so vehicle may require a tune up. Many vehicles can be diagnosed for free at your local Auto Zone.

Posted on Jul 19, 2010

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

I have a 96 geo prizm and it cuts out and jerks at acceleration and wont pull a hill and stalls at lights

I would start with a tune up-fuel filter,spark plugs,fuel injector cleaner,air cleaner-then if your still doing the hurky jerky you may try replacing the fuel pump-Denny

Nov 04, 2013 | Geo Cars & Trucks

1 Answer

1997 geo prizm won't stay running sputters and dies upon acceleration

, like it ain't gettin fuel; probabley a fuel pump or fuel injecter, fuel filter, something along those lines. Start with the filter its cheapest

Jan 13, 2013 | 1997 Geo Prizm

1 Answer

96 geo prizm 1.6l. Just had timing belt, water pump replaced. Allso, coil and spark plugs. Car now misses as soon as the water temp starts to come up when accelerating. I just put new plug wires on. Same...

I would definitely try the distributer cap and rotor button. It's about a 15 minute job and might solve your problem. As the car warms up the electrical components of course heat up too. As the heat goes up, resistance also increases in electrical connections, wires, etc. You could be getting enough current to pass between the rotor and the poles at low temps but, as they heat up, sufficient current for a good spark is not being passed along.

Mar 27, 2011 | 1996 Geo Prizm

1 Answer

1984 Geo Prizm run but drumping to too much gas

Might be anything but first I will inspect and replace the air filter. Other reason might be a lover compression test result. If it is 70 psi, then engine hesitates, but some people continue to drive and when it goes down to 60 psi the engine refuses to run .
One more reason might be ignition timing and the strength of spark. The distributor, wires and spark plugs have to be inspected, and replaced if necessary.
Finally another reason might be valve timing. This is related with the timing belt. If this is replaced please disregard this. I had a 90 ties Geo Prizm, and was making an average 30 miles per gallon.
Gradually dropped at 26 mile per gallon. I replaced the timing belt and a I got again 30 miles per gallon.
If your car will be sent in our car repair shop, these will be the first tests we will perform, to find the problem. Geo Prizm is a nice car, and very easy to take care with. If you will check this points by yourself, then you can save money and hope solve your problem.

Nov 04, 2010 | 1996 Geo Prizm

1 Answer

My 1997 Geo Prizm has been misfiring in cylinder 2. The check engine light came on and sometimes flashes I have replaced spark plug wires and the spark plugs looked good and were only a month old. If the...

do a leakdown check, you may have a valve that is leaking
I am not up to date on that motor but if it has a distributor cap the terminal for that plug may be tracking inside the cap or it may be cracked and causing it to short and creating the miss
hope this helps in some way

Jun 18, 2010 | 1996 Geo Prizm

1 Answer

Jerking problem on the freeway.

Try replacing the speed sensor on the transaxle.

Jun 13, 2009 | 1996 Geo Prizm

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

150 people viewed this question

Ask a Question

Usually answered in minutes!

Top Geo Experts


Level 3 Expert

78267 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22326 Answers

Mike Gilbreath

Level 1 Expert

50 Answers

Are you a Geo Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides