Question about Cars & Trucks

1 Answer

Hello, I have a 96 Chevy Cavalier that misfires under a load. there were 2 codes, an IAT circuit high and misfire cylinder 2, i used my scanner at my work but i work at a Toyota dealership so i don't know if i could see all the codes or not. i have already replaced the fuel pump, fuel filter, spark plugs, plug wires , intake air temp so that codes gone and I cleaned out my EGR. the car has not changed and is only getting worse... I asked techs in my shop if they had any ideas and they all had the same conclusion "its a cavalier". I've done compression tests they all read about 150, I really have no ideas what it could be at this point but i am going to check the valve sprins and see if that might be the problem, the car has over 155,000 miles and I don't think the previous owner did any maintenance. if anyone has any ideas please let me know it's ran like a champ for the few years that I've had it and now it's just all going downhill.

Posted by on

1 Answer

Is the exhaust converter original?

Did you scope the O2 Sensors?

Do a cylinder leak down test

EGR Valve ? or just cleaned passages?

Take your scanner for a ride on your lunch & have
a buddy look at cylinder misfire counts-- if you can use
Mode #06 data on that system

Check fuel pressure on the road if that data is avail

Put a few parameters in the scanner & play them back
when you return,put them up on a notebook or larger
screen ,so you can layer them down a page together

Posted on Dec 05, 2012

  • foster Dec 05, 2012

    yes the cat is origonal and i was thinking it could have melted so i have to much back pressure but it only has a misfire under load if it was the exhaoust wouldnt it miss fire if i was to just rev it? oh i didnt put that, if it is in park and there is no load i can rev the engine to redline if i wanted to and it would be just fine. i was going to do a leakdown test but i have good compression so i didnt think that would help. i cant view the misfire count or fuel prssure with the scanner :-\ i looked at the O2 with the scanner and it seems fine. i only cleaned the EGR becaue i thought it was stuck open i am going to clean the passages but i am not in a hurry to do that because that is only used at freeway speeds and my problem is all the time. if i am incorrect on when things work or what problems thing would cause please correct me. i just got out of school in june and i am still learning. and what parameters would you suggest for the drive?

×

6 Suggested Answers

6ya6ya
  • 2 Answers

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

Hi,
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.
goodluck!

Posted on Jan 02, 2017

  • 1861 Answers

SOURCE: 5vz-fe misfire codes

Replace the coil pack.

Posted on Dec 26, 2008

  • 217 Answers

SOURCE: 1998 Cavalier No Spark in cylinders 1 & 4

ignition mod. grounds,pcm or timing belt could all be it but, I would have to look at timing first.

Posted on Jan 17, 2009

  • 1 Answer

SOURCE: 99 4runner 5vz-fe 3.4 misfire

I know this post is old, but right on the engine theres a sticker that says use multi-ground plugs only. I read a similar problem like yours and it seemed to turn out that the spark was arcing to ground over the ceramic on the plug. So maybe it could have something to do with the single ground plugs.

Posted on Jan 23, 2009

redbeard00
  • 957 Answers

SOURCE: multiple cylinder misfire detected

Thank you for all the information. I don't see how you made it worse unless the injectors were not installed correctly. If you remove them you are suppose to replace the o-ring on each of them and oil them (the o-rings) before installing them. I would check the air filter and the CAT (for excessive back pressure. Also check the rest of the exhaust for damage. If a pipe is kinked or flattened it would need repair. Also GM's are known for some issues with there e-vap systems. You may want to check it out. The gas cap, charcoal canister, vacuum lines. Well good luck.

Posted on May 09, 2009

  • 55 Answers

SOURCE: 97 Chevy Cavalier misfiring

Sounds like it's you spark plug leads. Depending which engine you have in there, if you have the 2.4L then it is a module.

Posted on Jun 27, 2009

Testimonial: "Thanks SOOOOOO Much"

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

03 Nissan Altima showing codes P0304,P0102,P0154,P0113 what are they and how do i repair the problems.


Hi Chris.

p0304 = Number 4 Cylinder Misfire Detected

Faulty spark plug 4
Clogged or faulty fuel injector 4
Faulty ignition coil 4
Fuel injector 4 harness is open or shorted
Fuel injector 4 circuit poor electrical connection
Ignition coil 4 harness is open or shorted
Ignition coil 4 circuit poor electrical connection
Insufficient cylinder 4 compression
Incorrect fuel pressure
Intake air leak

The P0304 code means that the cylinder 4 is misfiring or is randomly misfiring. Start by checking for intake leaks an if no leaks are found the next step is to replace the spark plugs on cylinder 4.


p0102 = Mass or Volume Air Flow Circuit Low Input

Faulty mass air flow sensor
Intake air leaks
Dirty mass air flow sensor
Dirty mass air filter
Mass air flow sensor harness is open or shorted
Mass air flow sensor circuit poor electrical connection

Before replacing the mass air flow sensor, try replacing the air filter and cleaning the air flow sensor with low compress air or mass air flow sensor cleaner.
Reset code and drive vehicle.
If the code comes back, it may be necessary to replaced the mass air flow sensor.


p0154 = O2 Sensor Circuit No Activity Detected Sensor 1 Bank 2

Faulty Front Heated Oxygen Sensor Bank 2
Front Heated Oxygen Sensor Bank 2 harness is open or shorted
Front Heated Oxygen Sensor Bank 2 circuit poor electrical connection
Inappropriate fuel pressure
Faulty fuel injectors
Intake air leaks may be faulty
Exhaust gas leaks

Replacing the Front Heated Oxygen Sensor Bank 2 usually takes care of the problem.


p0113 = Intake Air Temperature Sensor Circuit High

Faulty Intake Air Temperature (IAT) sensor
Dirty air filter
Intake Air Temperature (IAT) sensor harness is open or shorted
Intake Air Temperature (IAT) sensor circuit poor electrical connection

The Intake Air Temperature (IAT) sensor is built into mass air flow sensor or in some vehicles mounted to the air filter duct housing. The sensor detects intake air temperature and transmits a signal to the Engine Control Module (ECM).The temperature sensing unit uses a thermistor which is sensitive to the change in temperature. Electrical resistance of the thermistor decreases in response to the temperature rise. The Intake Air Temperature signal is used as an input for various systems in the vehicle.



Hope this helps
FYT

http://www.autocodes.com/make/nissan

Mar 26, 2017 | Nissan Cars & Trucks

1 Answer

Oldsmobile codes


P0113 is Intake Air Temperature Circuit High Input, Internally failed IAT sensor Faulty connection at IAT sensor Open in IAT ground circuit or signal circuit Short to voltage in IAT signal circuit or reference circuit IAT harness and/or wiring routed too close to high-voltage wiring (e.g. alternator, spark plug cables, etc.) Faulty PCM (less likely but not impossible)

P0172 is Fuel Trim System Rich Bank 1, Faulty front heated oxygen sensor
- Ignition misfiring
- Faulty fuel injectors
- Exhaust gas leaks
- Incorrect fuel pressure
- Faulty Mass Air Flow (MAF) sensor

P0304 is Cylinder # 4 Misfire,
Known Failure Points:
1. Plugs- specifically Bosch Platinum plugs tend to self-destruct
2. Ignition Control Module- Kinda a "go" or "no-go" type thing. When it fails, you most likely won't be able to start your car.
3. Coil Pack Housing (usually white, some aftermarket are black) - Seems like an unlikely part to go, but from what I hear the plastic can breakdown and cause crossfiring.
4. Coil Pack- Haven't had a bad one yet, but it's entirely possible.
5. Plug Boots- If they're old, they might dry out and crack due to the high heat they are exposed to. Again, not very likely, but when all else fails.

Jul 15, 2014 | 2000 Oldsmobile Alero

1 Answer

1995 honda odyssey starting problems


Hello! in 1995 stored trouble codes used the On Board Diagnostic I software (OBDI)..Scanners will not work...The control unit LED can indicate any number of simultaneous component conditions by blinking separate codes, one after another...An instrument panel mounted indicator lamp will light and stay lit. If the lamp is on, or if a system malfunction is suspected even though the lamp is off, it is necessary to inspect the electronic control unit LED display. The LED display is on the ECM (ECU), which is located just below the RH side of the instrument panel. The indicator lamps operate whenever the ignition is On and a DTC is stored in the ECM (ECU) memory.
When an abnormality is detected the ECM (ECU) display blinks. The LED blinks a certain number of times, with the number of blinks indicating the number of the DTC. After the LED blinks a number of times there will be a two second pause and the LED will blink out the number of the next DTC..here are the codes..If there is a code send it to me...If there isn't a code I'll take it from there...guru.saailer

CODE DEFINITION
1 ..Oxygen Sensor "A" (Primary) defective circuit or unplugged / defective sensor

2.. Oxygen Sensor "B" defective circuit or unplugged / defective sensor

3 ...MAP Sensor (Manifold Absolute Pressure) defective circuit or unplugged / defective sensor

4... CKP Sensor (Crankshaft Position Sensor) defective circuit or unplugged / defective sensor

5.. MAP Sensor (Manifold Absolute Pressure) mechanical problem / disconnected piping
* not 94-95

6... ECT Sensor (Engine Coolant Temperature) defective circuit or unplugged / defective sensor

7... TP Sensor (Throttle Position) defective circuit or unplugged / defective sensor

8... TDC Sensor (Top Dead Center) defective circuit or unplugged / defective sensor

9... CYP Sensor (Cylinder) defective circuit or unplugged / defective sensor
* invalid code for throttle body injection Hondas
** invalid code for V6 engines

10.. IAT Sensor (Intake Air Temperature) defective circuit or unplugged / defective sensor

12... EGR Lift Sensor (Exhaust Gas Recirculation) defective circuit or unplugged / defective sensor
* invalid code for non-equipped EGR valve vehicles

13... BARO Sensor (Atmospheric Pressure) defective circuit or unplugged / defective sensor

14... IAC Valve (Idle Air Control) defective circuit or unplugged / defective sensor

15... Ignition Output Signal missing or defective ignition output signal

16... Fuel Injector System defective circuit or unplugged / defective fuel injector

17... VSS (Vehicle Speed Sensor) defective circuit or unplugged / defective sensor

19...Automatic Transmission Lock Up Control Solenoid Valve defective circuit or unplugged / defective solenoid valve

20 ..Electrical Load Detector defective circuit or unplugged / defective sensor

21... VTEC Solenoid Valve defective circuit or unplugged / defective solenoid valve
* invalid code for non-VTEC engine
** invalid for V6 engine

22... VTEC Oil Pressure Switch defective circuit or unplugged / defective oil pressure switch
* invalid code for non-VTEC engine

23... KS (Knock Sensor) defective circuit or unplugged / defective sensor
* invalid code for V6 engine

30... Automatic Transmission Signal: "A" / SEAF / SEFA / TMA or TMB defective circuit or unplugged / defective sensor
* invalid code for 1996

31... Automatic Transmission Signal "B" defective circuit or unplugged / defective sensor

41... Primary Oxygen Sensor - Heater circuit malfunction

43... Fuel Supply System defective or malfunctioning fuel supply system

45... System Too Lean or Too Rich malfunction in the fuel monitoring systems

48... LAF Sensor (Lean Air Fuel) defective circuit or unplugged / defective sensor

54... CKF Sensor (Crankshaft Speed Fluctuation) defective circuit or unplugged / defective sensor

61... Oxygen Sensor, Heated - Sensor 1 (Primary) high voltage, low voltage, or slow response

63... Oxygen Sensor, Heated - Sensor 2 (Secondary) high voltage, low voltage, or slow response

65... Oxygen Sensor Heater (Secondary) malfunctioning or defective oxygen sensor heater

67... Catalyst system Efficiency Below Threshold malfunctioning or defective catalyst system

70... Automatic Transmission malfunction with the automatic transmission controls

71... Cylinder 1 Misfire or a Random Misfire a condition is present that is creating a cylinder misfire

72... Cylinder 2 Misfire or a Random Misfire a condition is present that is creating a cylinder misfire

73... Cylinder 3 Misfire or a Random Misfire a condition is present that is creating a cylinder misfire

74... Cylinder 4 Misfire or a Random Misfire a condition is present that is creating a cylinder misfire

80... Exhaust Gas Recirculation insufficient flow detected

86... ECT Sensor (Engine Coolant Temperature) circuit range / performance problem

90... Evaporative Emission Control System leak detected in the fuel tank area

91... Fuel Tank Pressure Sensor low input

92... Evaporative Emission Control System insufficient purge flow

Dec 28, 2011 | 1996 Honda Accord

1 Answer

Code p1313 p1316 p1111 p0301 means what?


Odd one this to have P1111 as well.

According to my data P1111 is all dtc checks compleated, http://www.bluejag.co.uk however some websites show it as a Intake Air Temperature (IAT) Sensor Circuit Intermittent High Voltage, I'm fairly sure that the latter is incorrect.

check the basics first plugs, leads, corroded ground connections etc then its a bit of a guessing game


As for the other codes

P0301 = Misfire detected - cylinder 1
P1313 = Misfire rate catalyst damage - bank 1
P1316 = Misfire excess emission


Possible causes (as per JTIS):

Cylinder compression low
Worn camshaft / broken valve spring(s)
Fuel delivery pressure (low / high)
Fuel injector(s) restricted / leaking
Fuel injector(s) continuously open
Fuel contamination
Fuel injector circuit fault(s)
(Injector DTCs also flagged)
Spark plug failure / fouled / incorrect gap
ECM to ignition coil primary circuit fault
(Cylinder misfire detected DTC also
flagged)
Ignition coil failure

hope this helps

Mar 13, 2011 | 2002 Jaguar X-Type

2 Answers

After going over 40mph the check engine light goes on n it gives the code 440


How did you read that code on your car? A 92 Accord is supposed to give you pre-OBD honda codes, which are all below 100. Please check the code again and re-post it.

Jan 04, 2011 | 1992 Honda Accord

2 Answers

05 kia amanti with diagnostics codes p0350,p0320,p0300,p0302,p0303,p0304,p0305,p0306.skipping at times.when it does skip & misfire the rpm gauge goes crazy.this problem is not consitant


Generic OBD II Diagnostic Trouble Codes

DTC CODES P0300 to P0399

P0300....Random/Multiple Cylinder Misfire Detected

P0301....Cylinder 1 Misfire Detected

P0302....Cylinder 2 Misfire Detected

P0303....Cylinder 3 Misfire Detected

P0304....Cylinder 4 Misfire Detected

P0305....Cylinder 5 Misfire Detected

P0306....Cylinder 6 Misfire Detected

P0307....Cylinder 7 Misfire Detected

P0308....Cylinder 8 Misfire Detected

P0309....Cylinder 9 Misfire Detected

P0310....Cylinder 10....Misfire Detected

P0311....Cylinder 11 Misfire Detected

P0312....Cylinder 12 Misfire Detected

P0313....Misfire Detected with Low Fuel

P0314....Single Cylinder Misfire (Cylinder not Specified)

P0320....Ignition/Distributor Engine Speed Input Circuit

P0321....Ignition/Distributor Engine Speed Input Circuit Range/Performance

P0322....Ignition/Distributor Engine Speed Input Circuit No Signal

P0323....Ignition/Distributor Engine Speed Input Circuit Intermittent

P0324....Knock Control System Error

P0325....Knock Sensor 1 Circuit (Bank 1 or Single Sensor)

P0326....Knock Sensor 1 Circuit Range/Performance (Bank 1 or Single Sensor)

P0327....Knock Sensor 1 Circuit Low Input (Bank 1 or Single Sensor)

P0328....Knock Sensor 1 Circuit High Input (Bank 1 or Single Sensor)

P0329....Knock Sensor 1 Circuit Input Intermittent (Bank 1 or Single Sensor)

P0330....Knock Sensor 2 Circuit (Bank 2)

P0331....Knock Sensor 2 Circuit Range/Performance (Bank 2)

P0332....Knock Sensor 2 Circuit Low Input (Bank 2)

P0333....Knock Sensor 2 Circuit High Input (Bank 2)

P0334....Knock Sensor 2 Circuit Input Intermittent (Bank 2)

P0335....Crankshaft Position Sensor A Circuit

P0336....Crankshaft Position Sensor A Circuit Range/Performance

P0337....Crankshaft Position Sensor A Circuit Low Input

P0338....Crankshaft Position Sensor A Circuit High Input

P0339....Crankshaft Position Sensor A Circuit Intermittent

P0340....Camshaft Position Sensor 'A' Circuit (Bank 1 or Single Sensor)

P0341 Camshaft Position Sensor 'A' Circuit Range/Performance (Bank 1 or Single Sensor)

P0342....Camshaft Position Sensor 'A' Circuit Low Input (Bank 1 or Single Sensor)

P0343....Camshaft Position Sensor 'A' Circuit High Input (Bank 1 or Single Sensor)

P0344....Camshaft Position Sensor 'A' Circuit Intermittent (Bank 1 or Single Sensor)

P0345....Camshaft Position Sensor 'A' Circuit (Bank 2)

P0346....Camshaft Position Sensor 'A' Circuit Range/Performance (Bank 2)

P0347....Camshaft Position Sensor 'A' Circuit Low Input (Bank 2)

P0348....Camshaft Position Sensor 'A' Circuit High Input (Bank 2)

P0349....Camshaft Position Sensor 'A' Circuit Intermittent (Bank 2)

P0350....Ignition Coil Primary/Secondary Circuit

Nov 17, 2010 | Kia Amanti Cars & Trucks

1 Answer

Just got 2002 chevy cavalier ls check engine light on code is p300 multiple cylinders misfire, changed plugs and wires now says cylinder 2 misfire what do i do


RECHECK#2 SPARKPLUG, PULL IT OUT AND INSPECT THE GAP TO MAKE SURE IT'S NOT BENT SHUT, IF PLUG IS OK MAKE SURE WIRE BOOT IS ON SECURELY, IF THATS OK THEN SUSPECT A FAULT COIL.

Mar 29, 2010 | 2002 Chevrolet Cavalier Coupe

1 Answer

I have 1996 Dodge Gran Caravan, and it gives me these codes: 27 and 43, what do they mean??


CODE 27 - Injector Control Circuit, output driver does not respond properly to the control signal

Code 27 MIL light options: OBDII
P0201 - Injector #1 Control Circuit
P0202 - Injector #2 Control Circuit
P0203 - Injector #3 Control Circuit
P0204 - Injector #4 Control Circuit
P0205 - Injector #5 Control Circuit
P0206 - Injector #6 Control Circuit

CODE 43 - Cylinder Misfire, or Ignition Primary Circuit

CODE $# MIL options: OBDII
P0300 - Multiple Cylinder Misfire
P0301 - Cylinder #1 Misfire
P0302 - Cylinder #2 Misfire
P0303 - Cylinder #3 Misfire
P0304 - Cylinder #4 Misfire
P0305 - Cylinder #5 Misfire
P0306 - Cylinder #6 Misfire
P0351 - Ignition Coil #1 Primary Circuit
P0352 - Ignition Coil #2 Primary Circuit
P0353 - Ignition Coil #3 Primary Circuit

Feb 03, 2010 | 1996 Dodge Caravan

1 Answer

2001 Chevy Cavalier Misfire


Have you made sure your getting spark on every cylinder from the coil pack?

Jun 03, 2009 | 2001 Chevrolet Cavalier

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

Related Topics:

57 people viewed this question

Ask a Question

Usually answered in minutes!

Top Cars & Trucks Experts

yadayada
yadayada

Level 3 Expert

75005 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22095 Answers

Randy Ohler

Level 3 Expert

14585 Answers

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

Answer questions

Manuals & User Guides

Loading...