Question about 1998 Chevrolet Corvette

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Gm code P1518

Dic shows code p1518 and check engine light is on.

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P1518 code on 2004 Pontiac Grand Prix. TAC to PCM communication. Complete loss of engine power. Not even enough to move car inch. Engine light on a the time. Will start and run everytime but push gas petal and spits & bucks and awful sounding noise.

Posted on Oct 11, 2019

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  • Chevrolet Master
  • 6,098 Answers

Could be bad TPS sensor.

Posted on Apr 09, 2017

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6ya6ya
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SOURCE:

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Posted on Jan 02, 2017

  • 194 Answers

SOURCE: 5 ERROR CODES ON A 2002 CHEVY SUBURBAN

Change the Mass Air Flow sensor.Or the the Volume Air flow sensor.Also replace the ( IAC ) Idle Air Control. There is no code P1518 are you sure they wrote it down for you correctly? I just had my Library of codes updated last week and it is not on the list. After all repairs are made make sure you have the Diagnostic Trouble Codes Erased from the on board computers memory. This will reset the check engine light and keep it from comming on again for thoes codes.If it does come on again and it relays more DTC you can ask me for further help through the Reply Window. Good Luck and have a good XMASS.

Posted on Dec 14, 2010

Transdoc
  • 829 Answers

SOURCE: 2003 Chevy Tahoe 4X4. Started

Tac(throttle actuator control) module to pcm(powertrain control module) circuit problem.Check wire connection on the electric sensor on gas pedal.Most likely just a bad and or dirty connection.See this often on work trucks.

Posted on Feb 15, 2011

ZJLimited
  • 17970 Answers

SOURCE: i have a 2003 chevy

P1518 CHEVROLET - Electronic Throttle Module to PCM Communication

Condition/Concern:
Customers may have a concern of lack of power and engine light on. DTCs set will almost always contain a P1518 and may contain any of the following (P1516, P2108, P0220, P0120, U0107). An improperly torqued TAC module ground may be at fault. The Ground is listed as G104 on TAC module schematic which is incorrectly labeled on SI document ID 855376. The correct ground is G103. The locator for SI states that G103 is located on the left hand side which is incorrect. However, there have been field reports stating that G104 has also corrected this condition. G104 is a horizontal bolt in the rear of the left head and extremely difficult to reach. G104 should also be tightened at the same time.

There have also been field cases where ground G110 on the outer drivers side frame rail caused a P1518 code and an intermittent connection at splice 102 on the intake.

All published SI diagnostics should be followed in addition to following the recommendation listed.
Recommendation/Instructions:

Tighten ground G103 located behind the right cylinder head (passenger side) just below the head and mounted into the block. The ground uses a 13 mm bolt head mounted vertically to the engine block just above the bell housing.

• DTC P1518 sets if the battery voltage is low. If the customer's concern is slow cranking or no crank because battery voltage is low, ignore DTC P1518. Clear any DTCs from memory that may have set from the low battery voltage condition.
• DTC P1518 sets when there is a short to B+ on the TAC module ground circuit. Inspect the fuses for the circuits that are in the TAC module harness--i.e. cruise, brake. An inspection of the fuses may lead you to the circuit that is shorted to the TAC module ground circuit.
• DTC P1518 sets if the TAC module ignition feed circuit is shorted to a B+ supply circuit. The TAC module stays powered-up when the ignition switch is turned OFF. When the ignition switch is turned ON, the TAC module is powered-up before the PCM. DTC P1518 sets because no communication is detected by the TAC module from the PCM. Inspect related circuits for being shorted to a B+ supply circuit.
• Inspect the TAC module power and ground circuits and the TAC module/PCM serial data circuits for intermittent connections.
• Inspect the TAC module connectors for signs of water intrusion. If water intrusion occurs, multiple DTCs may set without any circuit or component conditions found during diagnostic testing.
• When the TAC module detects a problem within the TAC system, more than 1 TAC system related DTC may set. This is due to the many redundant tests run continuously on this system. Locating and repairing an individual condition may correct more than 1 DTC. Remember this if you review the stored information in Capture Info.


Conditions for Setting the DTC
• The TAC module detects that the predicted and the actual throttle positions are not within a calibrated range of each other.
• The PCM and the TAC cannot determine the throttle position.
• Both of the TP sensors are invalid.
• All of the above conditions are met for more than 1 second.



Condition/Concern:
A vehicle may be brought into the dealer for a reduced power message, and DTCs P0120, P0220, P1516, P2101, or P2135.

The Throttle Actuator Control (TAC) / throttle body type trouble codes, may be caused by a loose wiring crimp at the throttle body connector, or a broken throttle body circuit.

Recommendation/Instructions:
Complete the current SI diagnostics for any symptoms or trouble codes found. If a intermittent T/P or TAC module type code is occurring complete the inspections below.

Inspect all related throttle body terminals for a loose wiring crimp. The loose crimp may be difficult to find, and the poor connection will be between the terminal and the copper strands of the wire. Wiggle test the individual throttle body circuits to see if the concern can be duplicated.
Inspect the related circuits for broken wires inside the insulation. The outer wire insulation may look fine, but the internal copper strands may be partially broken. Breaks in the wires usually occur within 1 to 4 inches of the throttle body connector. Wiggle testing may also induce a trouble code to set.
On C/K trucks complete SI procedures for voltage drop on grounds G103 and G104. Grounds G103 or G104 may be loose or corroded.

If a terminal crimp or a broken wire has been found, repair or replace only the circuits involved.

Keep us updated.

Posted on Apr 05, 2011

skychief2001
  • 21873 Answers

SOURCE: I have a 2004 chevy trailblazer that gave me code p1518

P1518 CHEVROLET Description The Throttle Actuator Control (TAC) module contains data which is essential for proper TAC operation. The TAC module continuously test the integrity of this data. When the TAC module is unable to write or read data to and from random access memory (RAM), or the TAC module is unable to correctly read data from the flash memory or and internal TAC module processor fault is detected and the Detected Trouble Code (DTC) is set.
Read more: http://engine-codes.com/p1518_chevrolet.html#ixzz21VOQMCZz

Posted on Jul 24, 2012

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1 Answer

HOW TO RESOLVE OBD11 Code P1518 showing on a 3.0 DOHC 1999 Ford Taurus


P1518 - Intake Manifold Runner Control Malfunction (Stuck Open) The IMRC system is monitored for failure during continuous, key ON engine OFF or key ON engine running self-test. The test fails when the signal on the monitor pin is less than an expected calibrated range at closed throttle.
  • IMRC monitor signal circuit shorted to PWR GND or SIG RTN
  • Damaged IMRC actuator
  • Damaged PCM
An IMRCM PID reading approximately near 1 volt at closed throttle may indicate a fault
video's on youtube

Dec 05, 2017 | Ford Cars & Trucks

1 Answer

Where is the imrc located on a 2002 ford f-150 xl?


P1518 - Intake Manifold Runner Control Malfunction (Stuck Open) The IMRC system is monitored for failure during continuous, key ON engine OFF or key ON engine running self-test. The test fails when the signal on the monitor pin is less than an expected calibrated range at closed throttle.
  • IMRC monitor signal circuit shorted to PWR GND or SIG RTN
  • Damaged IMRC actuator
  • Damaged PCM
An IMRCM PID reading approximately near 1 volt at closed throttle may indicate a fault
It's part of the intake manifold . View P1518 on youtube .
2000 150 4 2L V6 Fault Code P1518 IMRC

Sep 14, 2017 | Ford Cars & Trucks

1 Answer

Code P1518 I can't find in book. Can u tell me about this code??


P1518 Intake Manifold Runner Control Stuck Open
For specific models follow this link

http://engine-codes.com/p1518.html

Apr 03, 2015 | Cars & Trucks

1 Answer

P1518 engine code


P1518 Intake Manifold Runner Control Stuck Open (Bank 1)
Sorry no idea what this means ,but i suspect the valve on the fuel rail the one with the vacumn pipe to it ?'

May 23, 2013 | 2001 Ford Focus

1 Answer

Trouble codes chevy p1518


The first check should be done to the TAC module to make sure that none of the wiring near the Control Module is damaged due to chaffing. If the wiring and module appear to be in tact, the procedure below is recommended to correct the P1518
Condition/Concern:
Customers may have a concern of lack of power and engine light on. DTCs set will almost always contain a P1518 and may contain any of the following (P1516, P2108, P0220, P0120, U0107). An improperly torqued TAC module ground may be at fault. The Ground is listed as G104 on TAC module schematic which is incorrectly labeled on SI document ID 855376. The correct ground is G103. The locator for SI states that G103 is located on the left hand side which is incorrect. However, there have been field reports stating that G104 has also corrected this condition. G104 is a horizontal bolt in the rear of the left head and extremely difficult to reach. G104 should also be tightened at the same time.
There have also been field cases where ground G110 on the outer drivers side frame rail caused a P1518 code and an intermittent connection at splice 102 on the intake.
All published SI diagnostics should be followed in addition to following the recommendation listed.
Recommendation/Instructions:
Tighten ground G103 located behind the right cylinder head (passenger side) just below the head and mounted into the block. The ground uses a 13 mm bolt head mounted vertically to the engine block just above the bell housing.

May 17, 2013 | 2001 Chevrolet Suburban

1 Answer

I have a p1518 on Ford windstar 99 3.8.


For error code P1518 troubleshooting,click the link below :----http://schematicsdiagram.blogspot.in/2012/03/obd-code-p1518-on-ford-windstar.html
--------This will help.Thanks.

Mar 03, 2012 | 1999 Ford Windstar

1 Answer

I haveLIGHT "check engene" .


P1518 intake manifold runner control.stuck open.do a search on ''you tube''key word P1518
you dont mention year,modle or engine.

Jun 24, 2011 | Mercury Cougar Cars & Trucks

1 Answer

Engine codes p1518, p0125, and p0420 for 2001 firebird


P0125 sets when engine coolant temp does not reach temperature for closed loop operation within a set amount of time.
May be a faulty sensor or thermostat.
P0420 Is related to a faulty rear 02sensor.
P1518 PCM & TAC module communication detected missing or invalid serial data.
If TAC related repair has been done, clear DTC & recheck system. It may be necessary to preform clear codes function twice to clear this DTC.
make sure starting system & charging system are functioning properly. Low voltage can cause this DTC to set. This should help. Let me know how its going.

Apr 11, 2010 | 2001 Pontiac Firebird

1 Answer

I have a 201 e250 van the code p1518 comes up,the service engine light is on,what is p1518,it also shuts off when ever i am at a stop sign


Hello! A P1518 is a Intake Manifold Runner Stuck Open...It is a device that is held in place by three bolts and is located on the front of the intake manifold...There are two Actuator Rods...A 4 wire connector plugs into the top...Pin #1=Black (ground)...Pin #2=Dark Blue/Light Green...Pin #3=Red...Pin #4=Dark Blue/Yellow...

Check the connector for loose, frayed, contaminated, or open wires...However the Actuator is more than likely jammed with carbon...


Guru..............saailer


I’m happy to help further over the phone at https://www.6ya.com/expert/david_6df67de3b14de867

Feb 27, 2010 | 2002 Ford F150 Regular Cab

1 Answer

2002 F150 v6-4.2L I have a service engine soon ligth on. Install a reader and the code is P1518 manufacturer controlled vehicle speed, Idle control & auxilliary inputs.


YOUR DIFINITION IS INCORRECT, HERE IS THE CODE FROM THE FORD REPAIR MANUAL

P1518 Intake Manifold Runner Control (Stuck Open)
CHECK FOR DISCONNECTED INTAKE RUNNER CONTROL VALVE LINKAGE AT UPPER PLENUM CHAMBER

Oct 09, 2009 | 2002 Ford F150 Regular Cab

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