Question about 1998 Chevrolet Malibu

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What are the symptoms of a bad or weak fuel pump

My car is starting up running then wants to bog down an shuts off so i replaced the fuel filter, crank sensor, throttle position sensor, spark plugs and wires checked to see if cat. was clogged (not) i don't know what els to do beside check my fuel pump any hints please help me out.

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  • Chevrolet Master
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The symptoms of a fuel problem are1 no fuel to the engine 2 low pressure ot the engine. What you describe indicates thet the pressure regulator in the fuel manifold is not holding sufficient pressure to run the motor. Best to habe the pressure checked of both units befor spending dollars on what not be faulty

Posted on Jan 06, 2013

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Posted on Jan 02, 2017

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SOURCE: I have a 1997 Chevy Cavalier with a 2.2 Liter

Sounds like either the ignition module and or a coil pack is the culprit. I dont remember what year they changed it but if your is the one where the coil packs/module are located on the back of the motor they are a little tricky to get to. You need to remove dog bone mount and replace with a tool that will pull the motor forward so you can gain easier access...good luck. Hopefully yours are right on the top where they should have been since day one... :-)

Posted on Feb 20, 2009

  • 1 Answer

SOURCE: 2000 chevy blazer, truck cranks

Does your battery go dead?

Posted on Dec 18, 2008

  • 2 Answers

SOURCE: wont start has fuel and has spark

RC ralston
Your problem is a leak in the cpi pletium most likely the pressure line has a leak
had same problem with mine $45.00 PRESSURE LINE KIT AND $15.00 GASKET FOR PLETIUM and 2 hours labor problem sovled.
You can remove vortec cover and remove air regulator to look inside pletium. I had gas vapor on driver side . that is where fuel lines are. fuel regulator is on passenger side. turn key on and look in hole and see where fuel is spraying. taking pletium off you can again turn key on and make sure where fuel is coming from.

Posted on Feb 06, 2009

  • 1 Answer

SOURCE: 82 corvette crossfire injection, engine

Please go to the crossfire injection forum to get some straight answers to the 82 corvette CFI system and how to troubleshoot it properly. There's a lot of misinformation given here, so much so, I don't know where to begin.

One thing is, the 82 corvette CFI does NOT have a MassAir Flow sensor system, it uses MAP and O2 mostly. The CTS sends a signal to the ECM telling it what the temp of the motor is and in turn the ECM controls the amount of fuel being dumped. On the older (orignal) CTS sensors, they have one wire and takes its ground from the threads. If any coorosion takes place, usually the CTS will report a cold engine and request lots of fuel.

To repair this issue, install one of the newer style CTS sensors that have two wires, one for signal and the other is ground.

Fuel pressure and vacuum leaks on any CFI motor play key roles. Set the FP to 14-15psi measured inbetween the TBs. The regulator is located on the rear TB and must be slightly moded to make it adjustable and can be done in a few minutes.

Posted on Mar 07, 2009

  • 206 Answers

SOURCE: '90 3.1 lumina euro idles ok but tries to stall when accelerated.

If the cat is red then it is probably plugged if the motor can't exhale it wont run at high rpm

Posted on Apr 12, 2009

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1 Answer

Where is the safety shut off for a 2003 Pont Aztek


There is no safety shut off switch .First off you say it still won't crank , I'm assuming you mean it won't start an run . If you turn the key to the start position an the engine spins ,that is referred to as the engine cranks . You have a no crank - no start or engine cranks - no start . A fuel pump would have nothing to do with a no - crank -no start problem . If the engine is cranking an not starting check for spark at spark plugs . Is there a security light lit on the instrument cluster ? a anti-theft system problem will cause a crank - no start problem . A short on the five volt reference circuit will cause a crank - no start . A shorted map sensor , shorted TP - throttle position sensor

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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

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When i start my mach 1 it runs fine when i use it for 5 to ten minets then when i go up a hill it bogs down and doesnt move and will die


Sounds like either your fuel pump and or fuel filter is bad. Change fuel filter first and try the hill. If it still bogs down sounds like fuel pump is almost ready to die. Get a pressure test run on fuel pump.

If above does not work then it maybe maybe your catalytic converter. Have it checked. Good luck

Apr 01, 2015 | Cars & Trucks

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Bought a 93 Ford Explorer replace fuel filter car


test new fuel filter if blocked Replace fuel filter again. make sure ot is not on backward.if still haveing problem check fuel pressure., Fuel pump could be bad if this was helpful please leave good feedback

Sep 17, 2014 | Cars & Trucks

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Why does my car bog down and wont accelerate up a hill?


Usually a sign of a fuel problem, either too much or too little.
Too much could be several problems including a clogged air filter, too little could be a weak fuel pump or other issue.
A mechanic would check fuel pressure and air flow first.

Jul 15, 2014 | 1996 Mitsubishi Galant

1 Answer

Cranks but wont start


Likely a fuel delivery problem.

Check the filter, as it may be clogged and due for replacement. To test for fuel delivery, open your airbox and spray some starter fluid (purified ether, usually) down into the throttle body while someone else cranks the engine. If it fires up and runs for a few seconds but won't run without spraying the starter fluid, then you know you've got spark and compression. If that's the case, there could be any number of potential issues: throttle position sensor (not very common, but it does happen), fuel injectors clogged (common if you use low-grade fuel), fuel filter/strainer clogged (filters should be replaced every 30k miles or so, on average), fuel pump failure (you should hear a buzzing from the fuel pump when you crank the engine).

If the starter fluid doesn't help, then the problem is no spark. Check each plug/cable for fouling.

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I have a Yerf Dog CUV Rover that will crank but runs like garbage. If you give it more than quarter throttle it will bog down and most of the time shut off Please help


Fuel system faulty. Not to hard to find the problem. Check in this order.
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  3. fuel pump relay
  4. fuel pump, even it you hear it running, it can be too weak to run an engine at speed or under load.

Dec 16, 2013 | Cars & Trucks

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96 Jaguar XJ6 starts fine, idles at 800 in neutral 700 in gear, at times it gets a bit rough and stalls sometimes, restarts right away with no issues. Will not rev over 2700 rpm in neutral it just bogs. In...


the crank sensor is favorite they are unreliable that explaines why the trans not getting engine speed signal unless its a manual box and that code will allways be logged advise start by checking for water ingress in engine control module located lower rh a post then change crankshaft position sensor or better still try and borrow one from a good running car

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