Question about 1998 Chevrolet S-10 Pickup

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Re: diagram for location of ECM (Engine Control Module) not specifically identified

I checked your solution at the AutoZone site. Closest I come to the ECM is
the ICM (Ignition Control Module) at following link:

I'm not sure that the ICM is actually the ECM. The ECM (Engine Control Module), I believe, controls much more than the ignition timing but also fuel mixture at various RPMs and loads. I just can't seem to locate any schematics or specific information on the AutoZone site that describes the ECM. I need a diagram specific for the ECM since I am researching a reprogramming of the ECM by a company out of MT (PowerUpDiesel) that will set up my vehicle's ECM computer to provide the most efficient metering of fuel for increased power and fuel efficiency, specific to my vehicle (i.e., I provide my ECM with VIN # and tire size and they reprogram the module more accurately than the manufacturer's stock program).

I may need to just go down to my local Chevrolet dealer and get the information but thought that I could save myself a trip by getting advice from others here
RB in Anchorage

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Well i searched this link all got was this information hope it helps you :

Good luck..

Posted on Aug 18, 2008

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Where is the ecm located on a 92 Plymouth acclaim

NO ECM (engine control module). The skamatic does show PCM powertrain control module. Look under the hood, near the back of the motor. On the frame rail or the fire wall. Power Distribition center (PDC) should be ther as well.
Repair Guides Wiring Diagrams Wiring Diagrams AutoZone com

Mar 08, 2017 | 1992 Plymouth Acclaim

1 Answer

Where is the location of the oil pressure sender on a 2014 awd Chevy Equinox?

The AWD Equinox has two model selections (LS & LT) and two 2.4L engine options (K2.4L FI DOHC & the K2.4L Flex Fuel DOHC.)

Information on the Equinox engines oil pressure senders location is difficult to find on line so all I can offer in the way of help is to say that It will be on the engine block connected to the ECM (engine Control Module) with a single TN/BK (Tan/Black) wire lead.

The Oil Pressure Sender is a distinct looking unit that is sold by Autozone and they provide pictures of the various makes which should help you identify the units location on your engine block.

Gauge Sender

Aug 07, 2016 | Chevrolet Equinox Cars & Trucks

1 Answer

A dash light came on that looks like an engine with a downward arrow going through it. When it came on the car would not go over 35-40 mph.

REDUCED ENGINE POWER: Refer to Engine Control Module Description for the 5.3L engine or Engine Control Module Description for the 6.0L engine
The powertrain has electronic controls to reduce exhaust emissions while maintaining excellent driveability and fuel economy. The engine control module (ECM) is the control center of this system. The ECM monitors numerous engine and vehicle functions. The ECM constantly monitors the information from various sensors and other inputs, and controls the systems that affect vehicle performance and emissions. The ECM also performs the diagnostic tests on various parts of the system. The ECM can recognize operational problems and alert the driver via the malfunction indicator lamp (MIL). When the ECM detects a malfunction, the ECM stores a diagnostic trouble code (DTC). The problem area is identified by the particular DTC that is set. The control module supplies a buffered voltage to various sensors and switches. Review the components and wiring diagrams in order to determine which systems are controlled by the ECM.
Your best bet is take it to a ASE certified repair shop or a Chevy dealer who has the tool to diagnose this problem before it strands you some where .

Dec 04, 2015 | 2006 Chevrolet TrailBlazer SS

1 Answer

What to buy for code p0444 for hyundai tiburon gt 2.7

Felix: Code p0444 indicates a LARGE leak, which often indicates a loose gas cap. It could also be the wrong kind of gas cap. Since they are cheap, this is where I would start.
According to : On vehicles equipped with Evaporative emission control systems also known as EVAP, the engine draws in excessive fuel vapors from the gas tank that would otherwise be vented into the atmosphere.
The fuel vapor is routed through a vacuum line to the engine's intake and the purge valve/solenoid meters the desired amount of fuel vapors, controlled by the vehicles powertrain control module (PCM) or engine control module (ECM). The PCM/ECM monitors the voltage to the purge control valve and has detected no voltage change with the purge valve commanded on.
Note: This code is similar to codes P0443 and P0445.
Symptoms Symptoms of a P0444 trouble code may include:
  • Check engine light on (Malfunction indicator lamp illuminated)
  • Slightly diminished fuel economy, this will not affect engine performance
Potential Causes Causes of this DTC may include:
  • Wiring harness loose or disconnected
  • Engine wiring harness open circuit
  • Purge control solenoid open circuit
  • PCM/ECM malfunction
Diagnostic Steps for P0444 DTC Engine wiring harness - Check all connectors to ensure they are plugged in properly, look for loose or damaged wires. Typically the purge control valve is energized by the the battery and triggered on and off with a duty cycle through the PCM/ECM. Using the manufacturers wiring diagrams, identify which type of circuit being used and check for battery voltage presence with the key on/engine off at the power side of the control solenoid connector using a digital volt ohm meter (DVOM) set to the volts scale. If no battery voltage is present, trace the wiring back and determine the cause for voltage loss.
Test for continuity of the control side of the wire harness after disconnecting the plug from the control valve solenoid and the PCM wiring harness. Identify the correct wire at the PCM and control valve harness and check for continuity using the ohms scale on the DVOM, if excessive resistance is found, repair the circuit. If there is no continuity on the circuit, check all connections for damaged wiring, loose pins or disconnected harnesses and repair the circuit.
Purge control solenoid - Check for continuity at the purge control solenoid connector pins after removing the harness plug using the DVOM set to the ohms scale. Verify resistance is within manufacturers specifications. If no continuity is present, suspect the solenoid is internally open and replace the part with a known good unit.
PCM/ECM malfunction - Since the EVAP is only turned on during certain driving conditions, it will be necessary to monitor the EVAP control operation using an advanced scan tool capable and performing a road test under the driving conditions required to activate the EVAP system. Some advanced scan tools have an internal test to activate the EVAP system manually. Verify the PCM/ECM is commanding the EVAP system on. If the system is functioning correctly, it will be necessary to back probe the PCM/ECM wiring harness connector using a graphing multimeter or oscilloscope with a duty cycle feature with the positive lead on the purge control valve pin and the negative lead connected to a known good ground. The duty cycle should match what is commanded on by the PCM/ECM during EVAP operation. If there is no duty cycle present, the PCM/ECM may be at fault.This diagnostic trouble code (DTC) is a generic OBD-II powertrain code. It is considered generic because it applies to all makes and models of vehicles (1996-newer), although specific repair steps may vary depending on the model.a evaporative malfunction . purge valve and gas cap.
If you have to replace the purge valve, here is a picture of its location: tdisline_101.jpg




May 16, 2015 | Hyundai Tiburon Cars & Trucks

1 Answer

Wat does a control module look like on a 2007 camry


A modern vehicle can have many control modules to control various systems.

The 1st diagram below gives you the locations of the Engine Control Module, Body ECU, Theft Deterrent ECU and Shift Lock Control ECU.

However, if you are referring to the main Electronic Control Module (ECM) which controls the engine systems, the 2nd diagram will give you an idea what it looks like (it's much larger and will usually have the engine model on the label):


Nov 02, 2011 | 2007 Toyota Camry

1 Answer

Hi i got an error code of p1611 thank u

P1611 =
MIL request signal circuit low input MIL-on Request Line

This code is set when the MIL On Request from the TCM (Transmission Control Module) has/had a problem getting the information to the ECU (Engine Control Module). In the 98 Elantra, there are two separate computer modules; one for the engine, the other for the transmission. (both located under the dash Driver's side. The diagnostic procedure specifies the wiring between the ECM & TCM be checked for any damage/defects. If none found, then replace the TCM with a new one to see if the problem (code) occurs again. If communication between TCM & ECM is corrected, you should have a ****** code related to the MIL On Request from the TCM (****** codes begin with P07 w/the next two digits (??) identifying the specific transmission component/malfunction).

You can also Go to and register your vehicle by VIN #.. you'll then have access to wiring diagrams, shop & owner manuals, service bulletins, campaigns, illustrations and procedures, etc

Sep 14, 2011 | 1998 Hyundai Elantra

2 Answers

Engine stalls at 30mph upon hitting accellerator, then coasts to a stop. then won't restart. starter works, engine turns over, but won't fire up. next morning car starts fine. next week engine...

Hello first of all

well i am sorry a mechanic cant figure this out its really sad. ok so your problem is your either one of two things but most likely the first one i list.

1. camshaft postion sensor
2. crankshaft postion sensor

Now that being said it most likely the camshaft sensor the reason i say that is when a crankshaft postion sensor is bad the car has very hard starts and most of the time no start issues. When a camshaft postion sensor is bad the car cuts off whil driving and can be hard to start up again.

So that being said they are both pretty cheap parts i would go ahead and replace them both and i would bet my 5 years as ford mechanic that solves your issue.

The crank postion sensor is located behind the harmonic balancer pully or right beside it here is a picture from and description.

The crankshaft position sensor identifies position of the crankshaft to the ignition control module (ICM), engine control module (ECM) or powertrain control module (PCM).
  • When not replaced, vehicle could experience no- or hard start, long crank time, misfire, lack of power, excessive hydrocarbons in oil, spark plug fouling, catalytic converter failure, poor fuel economy, CEL/MIL illumination or intermittent shutdown.
  • Designed to meet or exceed OE specifications in form, fit and function.
  • Global coverage for import and/or domestic applications.

  • jamiesturm29_6.jpgAnd the camshaft sensor picture and info from below.

    The camshaft position sensor identifies position of the camshaft to the ignition control module (ICM), engine control module (ECM) or powertrain control module (PCM).
  • When not replaced, vehicle could experience no- or hard start, long crank time, misfire, lack of power, excessive hydrocarbons in oil, spark plug fouling, catalytic converter failure, poor fuel economy, CEL/MIL illumination or intermittent shutdown.
  • Designed to meet or exceed OE specifications in form, fit and function.
  • Global coverage for import and/or domestic applications.

  • jamiesturm29_7.jpg
    The crankshaft postion sensor is 22.99 and the cam is 19.99 so 50.00 bucks and about hours time should have you up and running.

    PS if this helps please 4 thumbs up it helps me continue to help on here thanks

    May 19, 2011 | 2006 Ford Crown Victoria

    1 Answer

    Where is the ecm located on a 1999 chevrolet venture 3.4L

    In the next diagram, look the ECM (Engine Control Module) or called PCM (Powertrain Control Module), clikc over image for zoom...


    Hope helps.

    May 06, 2011 | 1999 Chevrolet Venture

    1 Answer

    Hi i have a300tdi disco it keeps blowing number 14 fuse.sometimes straight away.sometimes after 5 mins


    According to the wiring diagram, No14 fuse is the 10Amp, which is connected in-line to the Engine Check light. It also runs to the Engine Control Module (ECM) and Anti-Theft system (if equipped).

    Something in one of these circuits is triggering a malfunction.

    I recommend you have the onboard Diagnostic computer scanned by your local Land Rover dealership, to extract any fault codes - this will immediately identify the faulty component/s.

    If no codes are present, then the vehicle will need to go to an Auto Electrician, to locate and rectify the fault.

    Nov 12, 2009 | 1997 Land Rover Discovery

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