Question about 1997 Chevrolet Cavalier

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ECM I think the Ecm is making misfires happen in my 97 cav 2.2 and was wondering where it is in the car......also my diag will not interface with it

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Remove the neg battery lead for about 5-10 minutes then try. this will cause the ECM to reboot

Posted on Jun 14, 2009

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1 Answer

#2 cylnder misfire


plug, injector, injector wiring, bent valve, vacuum leak cam follower problem, ECM plug , ECM

Sep 17, 2016 | 2010 GMC Terrain

1 Answer

ENGINE LIGHT ON CODES P0141 & P0144


code p 0141 refers to heated oxygen sensor (HO2S) 2 bank 1--heater control--circuit malfunction===causes --wiring---HO2S--- ECM
code p 0144 refers to heated oxygen sensor(HO2S) 3 bank 1--high voltage ===causes wiring short to positive ---HO2S---ECM
also refers to oxygen sensor(O2S) 3 bank 1--high voltage ===causes wiring short to positive---O2S-- ECM
HO2S sensors are the units in the exhaust manifolds or before the cat converters
O2 sensors are after the cat converter
two completely different operations
use the special tool for sensors as the wires are easily damaged from the wrong tool use
as for misfiring you will get a P0300 (0300,0301,0302,0303 etc) depending on which cylinders are misfiring
when checking for misfiring the injectors , (blocked or not firing) are as important as plugs and wires
If the misfiring continues after sensor replacement , replace the ECM with a known good one as it is common to all fault codes and misfiring

Jun 06, 2016 | 2005 Hummer H2 SUV

1 Answer

Wondering if one or more CATS are pluged ??


Is there any oil in your coolant or coolant in your oil? (Oil would look like chocolate milk and coolant oil would be obvious. Sounds like a possible head gasket leak due to preignition or misfiring of the cylinders. Also double check the plug wires to make sure they are all on the correct cylinders. If two of the plug wires are reversed, it could cause this issue. The car should still run with out any cats but it will throw a check engine light. I'd bet it's either crossed wires, head gasket, and possibly a bad thermostat.

Sep 06, 2014 | 2005 Ford Escape XLT

1 Answer

Ecm location montana 2005


what makes u think it is the ecm? that happened with my 1999 Nissan and it turned out to be the distributor?! anyway; before u mess with the ecm, gita scanner sum where and read the check engine lite. advanced auto will loan it 2 u? start there. lol.

Feb 15, 2014 | Pontiac Cars & Trucks

1 Answer

97 ford expedition has a code 171 and 174 bank 1 and 2 lean what do i do to fix this


Code 171 and 174 are for bank 1 and 2 running too lean. The engine has compensated as rich as it can go, and it is still to lean. This does not necessarily mean your mixture is bad, but something (a sensor) is telling the ECM to correct lean. The oxygen sensors alert the ECM to how lean/rich the exhaust is, and then the ECM trips a code. Maybe you have a bad oxy. sensor, but since there are 4 of them (2 per bank), I don't think they could all go at once.

Aug 31, 2013 | 1997 Ford Expedition

1 Answer

Need another ecm for my 2002cadillac seville sls


there are companies who sell rebuilds , make sure one with lifetime warranty and swap it out.

Jun 08, 2012 | Cadillac Seville Cars & Trucks

1 Answer

I have a 2002 Jaguar X-type. The check engine light came on and it has been acting jumpy/shaky. I recently took it to be diagnosed and the codes I recieved back were P1314, P1316, P1111, and P0302..What do...


All fault codes can be checked out at http://www.bluejag.co.uk but here are the results for some of yours. You can ignor P1111. Looks like a faulty plug or coil pack cylinder 2

Fault Code:- P1314 Indicates a Power-train fault


The fault is generally due to a problem in the Ignition or Misfire area


Fault Description: Misfire rate catalyst damage -bank 2 NOTE: This DTC will flag only when accompanied by an individual cylinder misfire DTC: P0300 - P0306

Action of ECM:- ECM Default:- Maximum engine speed reduced


After clearing the DTC, complete the Misfire monitor drive cycle
Check for a reoccurrence of fault DTC.


Possible Fault:- 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
Fault Code:- P1316 Indicates a Power-train fault


The fault is generally due to a problem in the Ignition or Misfire area


Fault Description: Misfire excess emission NOTE: This DTC will flag only when accompanied by an individual cylinder misfire DTC: P0300 - P0306

Action of ECM:- none


After clearing the DTC, complete the Misfire monitor drive cycle
Check for a reoccurrence of fault DTC.


Possible Fault:- 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

Fault Code:-
P0302 Indicates a Power-train fault


The fault is generally due to a problem in the Ignition or Misfire area


Fault Description: Misfire detected ?€" cylinder 2

Action of ECM:- none


After clearing the DTC, complete the Misfire monitor drive cycle
Check for a reoccurrence of fault DTC.


Possible Fault:- Refer to P0300 Possible Causes

Aug 25, 2011 | 2002 Jaguar X-Type

1 Answer

Wiring diagram for the ecm plugs


Im idling at the light in my 2000 Dakota R/T and all of a sudden my check engine light comes on and the engine develops a miss and starts to smoke. Diag code says misfire in #5 cyl and there is a rich raw fuel smell from exhaust. I have 175K trouble free miles and have checked compression which reveals worn but good piston rings.I replaced head gaskets and of course still exists. When I got a hand to crank while I checked voltage at each injector, #5 showed higher than the rest at all times without dropping to zero, so i'm replacing the ECM which controls signals to injectors. Oh yeah I replaced #5 injector before voltage check to no avail. Tell me if you think Im on the right track replacing ECM.

Oct 02, 2010 | Dodge Grand Caravan Cars & Trucks

1 Answer

I was getting a 606 error and now a 303 error came up also.


I need to know the year, make, and model for your Subaru Outback.

I'll guess a year and then base the response on a 2000 Subaru Outback

P0606 ECM/PCM Processor
P0303 Cylinder 3 Misfire Detected

This points to a possible ECM processor causing a misfire on cylinder 3, but there are no guarantees that changing the ecm will solve this problem.

Jul 14, 2010 | Subaru Outback Cars & Trucks

2 Answers

Cylinder 2 misfire on a chevy 01 silverado changed the plug plugwire coilpack and fuel injector and it is still misfiring


The ecm has the driver for that cylinder,make sure the connection is good,if it is,replace the ecm

Jun 01, 2010 | 2001 Chevrolet Silverado

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