Question about 1989 Chevrolet Cavalier

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I have a 1989 chevrolet cavalier Z24 that is not getting an injector pulse, and i have replaced the ECM and tested the control module. the fuel pump is coming on but still won't start....any suggestions?

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: 1989 Cavalier Z24 3.1 rough idle and hesitation

its just white cuz i too the cat off..

cuz i thought my proble could have been to do with the cat...

cuz i lost power driving up hills and on highways now it just will start the die right away

or start and idle really bad...

any ideas???

i was thinking crank sensor.. or injectors

Posted on Oct 01, 2008

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SOURCE: 1989 cavalier z24

I just fixed my car, it was the spark plug wires leading to the wrong plugs, it runs like a champ now. Just did my first burn-out! :)

Posted on Feb 03, 2009

hondakilla
  • 129 Answers

SOURCE: ECM Location

For one i dont need your vin its a z24 which means it has a 2.4l engine it does not have an ECM it has a PCM powertrain control module, which is located for your car in the right rear corner topside of your engine bay, in 1995-2001 it is located inside the right front fender. I hope this info helps...

Posted on May 02, 2009

  • 740 Answers

SOURCE: 1993 honda accord 2.2,no injector pulse

This sounds like a main relay problem here is a diagram its located under the dash under steering column its the brownish -orange box in the picture. http://www.tegger.com/hondafaq/mainrelaylocation/7-main_relay_closeup.jpg Good luck and thanks for using FIX YA

Posted on May 15, 2009

GMJunkie
  • 74 Answers

SOURCE: Body Control Module

Below the instrument panel on the left side henge pillar,or up high behind the Instrument panel depending the model and options!

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Posted on Mar 09, 2010

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1 Answer

89 Cavalier Z24-2.8L-MPI-No Start-Will run if fed fuel thru throttle opening-fuel under pressure in rail- what am I missing?


I don't have my automotive software at my leisure right now but, look for a fuel pump relay; google it if you have to. Make sure the connections aren't corroded 'anywhere' in the fuel delivery system. And make sure they replaced the screen for the fuel pump when they replaced it..

Sep 06, 2012 | 1989 Chevrolet Cavalier

1 Answer

Lost inj. pulse need to know where the ecm gets crank position from. if from dist.how does it locate #1 1985 crovette


Lost injector pulse. First injector power is supplied by (IGN+) or fues block ,The injector are multi-potr not individual they are fired together,not individually, Now if you lost injection pulse youll need to inspect the Distributor,the pick up is highly suspectable to terminal corrosion, it corrodes easily,so be ready to replace the pick up with a module, (this is spark I know we are on Injector), Do you have spark, then leave this alone, Test injector pulse not at the injector because again its bank fire or group fired You ll need to test thes the connector harness connector,of the injectors.As long as there is spark you should have injector pulse from the injector sub harness connector make your way to the ECM , The ECM controls the energizing of the injector with a transitor or quad driver,they are synchronized to primary ignition . Here a solution if no spark correct for spark. Its either a Distributor pick up failure with ICM module.Do this only is you have no spark.If you have spark and no Injector ,replace ECM

Apr 28, 2011 | Chevrolet Corvette Cars & Trucks

1 Answer

Ok i had a p0302 and then i changed plug wires coil packs the icm injectors camshaft sensor and now i can a p0301 code.. and when i clear the code it will come back with the same code or else a p0300.. im...


1. Freeze Powertrain Control Module (PCM) and see if the problem can be duplicated.

2. Wiggle tug test wiring for #2 injector.

3. Scope the #2 injector for a glitch when the misfire happens. 1. Test for the Exhaust Gas Recirculation (EGR)/coolant adapter gasket leaking EGR gases past the gasket.

2. Connect a vacuum pump to the MAP sensor, block the vacuum source, reset fuel trims, start the engine and add typical vacuum to the MAP sensor and check operation.

3. Test the spark output with 2 High Energy Ignition (HEI) testers, at 25 KV air gap each, at the spark plug wires to ground at wires 2 and 3, then 1 and 4 at cranking speed and engine running.

4. Test the fuel injector pulse width at the injectors compared to the scanner data.

5. Disconnect the O2 sensor, reset the fuel trims, test the system operation in open loop, test injector pulse width. Compare to the closed loop operation injector pulse width and engine operation.

6. Test the Powertrain Control Module (PCM) powers and grounds during the problem.

Oct 13, 2009 | 1996 Chevrolet Cavalier

1 Answer

No spark on # 5 cylender 1989 cavalier z24


change the control modul. that control voltage to the coils. it sound like it not bleeding off fast enough the control modul is under the coils. befoe changing any part remove ground off battery. befor change any coils u could of swop to see if this is still not firing

Feb 22, 2009 | 1988 Chevrolet Cavalier Z24

2 Answers

89 s10 2.5 has fuel and fire injector has power but no pulse


injector pulse is just controlled by the ecm or computer as some would say,u said u replaced wires? did u have a fire or melt wires? ecm is known to go bad on these,had a few of these trucks back in the day.

Feb 16, 2009 | 2000 Chevrolet S-10

2 Answers

Thanks!


how are you checking for injector pulse ? have you checked fuel pressure should be 9 to 13 lbs i had a problem with one once and i grounded the computor case with a ground from battery to ecm case and it ran found grounds by t-stat housing bad repaired grounds but would check for fuel presure first

Oct 05, 2008 | 1989 Chevrolet K3500

1 Answer

2.8 calv


remove the air horn and check the resistance of the fuel injectors they should all be about the same

Aug 28, 2008 | 1988 Chevrolet Cavalier Z24

1 Answer

88 cavalier has no spark


you need to start somewhere. get hold of a scanner and see if car has a crank signal. the crank signal supplies refrence for both base for ignition and injection pulse. if it has injector pulse and no spark, look at the ignition module/ coils but if has neither look at the crank sensor or harness to the module

Aug 05, 2008 | 1988 Chevrolet Cavalier Z24

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