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Limp mode engine problems gen 3

Changed battery terminals with brass ones 2 replaced fly by wire throttle body [ new ] 3 replaced plug that connects to throttle body 4 replaced oil sender sometimes when i take off at normal excelloration it also gos in limpmpode i disconnect battery for 1 hour then reconnect battery i then may NOT have limpmode for 7 days then after 7 days limpmode will return Is this a mechanical OR electrical problem ? Any help will be appreciated thanks johnno

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6ya6ya
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Posted on Jan 02, 2017

emissionwiz
  • 75235 Answers

SOURCE: escort diesel fuel pump problem , new one has 3 wires instead of 1 wire

Find the lead that has 12 volts when the igtnition switch is turned on, that is the lead you will use.

Posted on Aug 25, 2008

  • 64 Answers

SOURCE: 1999 volkswagen stalled

first check cylinder 1 , spark plug, ht leads, coil,

then clean the trottle body with carb cleaner

if that does not work replace the throttle body, comes complete, and do a basic setting on it with diagnostic machine

Posted on Feb 19, 2009

  • 1 Answer

SOURCE: 82 corvette crossfire injection, engine

Please go to the crossfire injection forum to get some straight answers to the 82 corvette CFI system and how to troubleshoot it properly. There's a lot of misinformation given here, so much so, I don't know where to begin.

One thing is, the 82 corvette CFI does NOT have a MassAir Flow sensor system, it uses MAP and O2 mostly. The CTS sends a signal to the ECM telling it what the temp of the motor is and in turn the ECM controls the amount of fuel being dumped. On the older (orignal) CTS sensors, they have one wire and takes its ground from the threads. If any coorosion takes place, usually the CTS will report a cold engine and request lots of fuel.

To repair this issue, install one of the newer style CTS sensors that have two wires, one for signal and the other is ground.

Fuel pressure and vacuum leaks on any CFI motor play key roles. Set the FP to 14-15psi measured inbetween the TBs. The regulator is located on the rear TB and must be slightly moded to make it adjustable and can be done in a few minutes.

Posted on Mar 07, 2009

chitownbob45
  • 316 Answers

SOURCE: 2001 Saab SE red engine light and oil can, possible throttle

first off your mechanic sounds like he's taking you for a ride! If the oil lights coming on you need to check your oil pressure. I wouldnt drive this car anymore till I knew for sure I was getting good oil pressure through out the motor. Find a different mechanic! Mechanics are some of the biggest lying thieves! Right up there with lawyers.

Posted on Oct 18, 2009

  • 14036 Answers

SOURCE: 2003 GMC Sierra 5.3L (has

CODE PO120 - TP SENSOR 1 SIGNAL RANGE PERFORMANCE. CODE P1516 - TAC MODULE THROTTLE ACTUATOR POSITION PERFORMANCE. CODE P2135 - THROTTLE POSITION SENSOR 1 - 2 CORRELATION ERROR. THIS IS A DEALERSHIP FIX YOU HAVE PROBLEMS OR FAULTS IN THE THROTTLE POSITION SENSOR.

Posted on Oct 24, 2010

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2007 dodge magnum idles too high and shuts off


Check connection to the idle air control on your throttle body. The iac has a plunger that moves in & out causing idle change. If the throttle body is dirty it restricts the iac plunger travel. Tru seafoam in your gas to clean fuel injection system. Follow directions on cam! Run the complete tank to clean system. Note: you will need to change fuel filter when done.
Reset computer by disconnecting - battery terminal for 20 mins or more.

Aug 07, 2014 | 2007 Dodge Magnum SE

1 Answer

Where is the throttle body located?


old post , and great question

the TB is a thing that contains the AIR throttle, the body holds

that TV throttle valve (or some call it a TP throttle plate)

this car has 6 engines, and varies by country. what country>?

what engine? (USA cars have a hood EPA tag, it states the engine)



sure cleaning it can help and for sure with throttle by wire.

the body gets full of EGR/PCV crap. (called GUNK) and if not

removed on high mileage cars, it jams the silly throttle by wire

motor. (and related\'s)

why not scan the PCM and SEE ALL DTC errors.

that be first. !!!



loose power has many causes, up to 50.

why not scan it first, (the CEL lamp to me is useless , unless stuck on)

scan it first.

this engine has many limphome modes (suzuki failsafe)

and will run slow. in limp mode.

scan it.

the TBW , throttle by wire has it\'s own limp mode.

the transmission too, and others.



The TBW has up to 4 TPS sensors. 2 on the foot and 2 in the TB

if ANY of the 4 , do not AGREE, you go to LIMP HOME MODE>

or end up like a Toyota and huge class action lawsuits.



loss of power, not transmission caused, (slips or skips gears)

is engine power loss.

cause by (top ones of 50)

1: never getting a tuneup. and for sure the 60k mile.

2: misfire, caused by 3 major things. ask.

3: flooding.

4: bad spark see #1

5: clogged air filters see #1

6: clogged fuel filter.

7: weak fuel pump.

8: and the big one is loss o f engine compression for huge list of causes.

9: not scanning the PCM and believing what it told you. !!!

Jun 21, 2014 | 2007 Suzuki Forenza Sedan

1 Answer

My 2004 Xg350 is stuck in limp home mode.


code p1155 refers to electronic throttle system (ETS)- malfunction===causes --wiring--ETS limp home valve

code p1193 refers to ETS -limp home valve --on===causes --Low RPM
code p0302 refers to cylinder 2 misfire detected===causes--engine mechanical fault--wiring---ignition/ fuel system---injector---ECT/MAF sensor---ECM.
Pulling a battery lead to reset is a waste of time as it corrupts the CPU program. Use a code reader to reset . It is quicker and doesn't run the risk of program corruption

Dec 21, 2013 | Hyundai XG350 Cars & Trucks

1 Answer

95 intrepid with a rpm problem and my codes flashed 1 1 2 3 3 2 5 5 5


You have four fault code there...

Code 11
Description: Engine not cranked since last reset or no ignition reference signal detected during cranking
Power loss light: Off
Limp-in mode: None

Possible Causes:
Engine hasn't been cranked since last reset - Power was removed from the logic module (disconnected or dead battery, etc.) and the logic module has no memory of seeing a signal from the ignition reference sensor. Crank the engine and check for the code again. If the logic module saw a signal, the code will be cleared. This code will not show up if the sensor simply fails. The logic module must be reset and the engine cranked to see if the sensor is working.

Bad connection or wiring - Check the wiring and connections between the hall effect sensor (located underneath the distributer cap) and the logic module. Check the continuity of the two 3 conductor cables coming out of the sensor--these are prone to fatiguing and breaking inside the insulation where they exit the sensor if the cables are not properly tied down. You may be able to resolder them. Clean and regrease any corroded connectors with dielectric grease and repair any shorts. This code will not show up if the sensor simply fails. The logic module must be reset and the engine cranked to see if the sensor is working (see above).

Hall effect sensor failure- Check the ignition reference sensor and fuel injector sync sensor cables. They are the two, flat 3 conductor cables coming out of the sensor at the base of the distributer cap. These often fatigue where they exit from the sensor. Upon replacing the sensor, make sure the cables are clipped or tied to the distributor cap shroud (or elsewhere) so they do not swing around. This code will not show up if the sensor simply fails. The logic module must be reset and the engine cranked to see if the sensor is working (see above).


Code 23
Notes: For throttle body injected (N/A) models only

Description: Throttle body temperature sensor signal out of range
Power loss light: On
Limp-in mode: Throttle body temperature of 70^F is assumed

Possible Causes
Throttle body temperature sensor failure - The sensor should measure 9,120 ohms to 10,880 ohms at 77^F. This sensor is located on the side of the throttle body, below the throttle plate.

Bad connection or wiring - Check the wiring and connections between the sensor and the logic module (or SMEC). Clean and regrease any corroded connectors with dielectric grease.

Diagnostic Method
Trigger Parameters
- Sensor output less than 0.06V or greater than 4.98V
Results If Component Fails
Fault code 23 is stored, the power loss light is turned on, and the logic module will enter limp-in mode, assuming a throttle body temperature of 70^F.

Code 32
Description: Logic module did not see a change in air/fuel ratio when EGR circuit was activated
Power loss light: Off
Limp-in mode: None

Possible Causes
EGR valve stuck open or closed - If the vehicle fails emmisions, then the valve may be shut. If the enigne runs poorly at low rpm or at idle, the valve may be stuck open. It may be the valve or the transducer valve. Test the transducer valve vacuum output. At idle, the transducer valve vacuum should be mostly bled, and there should be very little, if any vacuum at the output. When the engine is revved, the vacuum should increase. If the transducer is functioning properly, replace the EGR valve.

Bad EGR solenoid or Canister purge/EGR solenoid - The solenoid is located in the right, front fender next to one to three other solenoids. See the Understanding Solenoids page for information about how to test and repair solenoids.

Bad connection or wiring - Check the wiring and connections between the solenoid and the logic module (or SMEC). Clean and regrease any corroded connectors with dielectric grease and repair any shorts.

Diagnostic Method
Trigger Parameters
- The EGR solenoid was deactivated, but the oxygen sensor reading did not change
Results If Component Fails
Fault code 32 is stored.

Code 55
Description: End of message
Power loss light: Off
Limp-in mode: None

Possible Causes
No further fault codes are stored. If this is the only code received, then there are no codes stored in memory. This code will always be given, even if nothing is wrong. If you do not get this code, then you may not be retreiving the codes properly, or the power loss light may be burnt out. The light should come on for 1 second when the ignition is initally turned on as a bulb test.

Diagnostic Method
Trigger Parameters
- No further codes in memory


Hope this helps (remember to rate this answer).

Apr 15, 2011 | 1995 Dodge Intrepid

1 Answer

2003 GMC Sierra 5.3L (has 2004 engine) Drive by wire. Reduced engine power (Limp Mode). Following error codes - P1516, P2135, P0120. Checked all connections at throttle body(Wiggle tested the individual...


CODE PO120 - TP SENSOR 1 SIGNAL RANGE PERFORMANCE. CODE P1516 - TAC MODULE THROTTLE ACTUATOR POSITION PERFORMANCE. CODE P2135 - THROTTLE POSITION SENSOR 1 - 2 CORRELATION ERROR. THIS IS A DEALERSHIP FIX YOU HAVE PROBLEMS OR FAULTS IN THE THROTTLE POSITION SENSOR.

Oct 24, 2010 | 2004 GMC Sierra 1500 Crew Cab

2 Answers

The traction control is disabled light comes on the dash. The Suburban will only go 20mph. This has happened twice in the last week. After letting it set for a bit and restart the problem goes away. ...


If this is a newer Suburban he maybe right. The truck may have throttle by wire. Which would have a small motor on the throttle body. If this part was bad it would put the truck in a limp mode. Which would make the truck go slow. This could cause the TC light to come on but the check engine light should be on too. If you don't think he is right get a money back guarantee If the part doesn't fix it you don't pay. Tell him this is the only way you will do the work there.

May 18, 2010 | Cars & Trucks

1 Answer

2005 Ford Expedition (4wd) with trouble codes p2104 and p2112 completely cuts off at low speeds. All signs point to throttle position sensor, but want to make sure I'm on the right track.


Shown here is the P2104 obd2 code and their general meaning. For a brief description of any particular OBD2 code and how to fix the obd2 trouble code, please browsw below. P2104 Engine TP Actuator Cntl System
This obd2 code is very common on newer vehicles which contain new design of throttle positioner sensor. Instead of putting a tps sensor at the side of your throttle body as in older engines, a throttle actuator control system is installed which eliminates the mechanical linkage (cable) between the throttle body and the throttle pedal. Under the throttle pedal, a throttle switch is installed and a throttle module or actuator is incorporated beside the throttle body. Because there is no mechanical device that wears out, it is more effecient in delivering better mileage and performance torque (besides...the actuator module performs better in getting all throttle signals to the ecm and trany).
To test this code, check the integrity of the wires going to both the throttle body actuator and the ecm including the throttle switch. Most of the time, if you have symptoms like trany going to a limp mode, the culprit originates from the trany circuit. However, if the symptom is engine related like hesitation, the problem resides in the throttle actuator itself which may sometimes includes the replacement of the whole throttle body assembly. Contact ATS if you need a wiring diagram or detailed fixes for your throttle actuator control system.
TIP:
Before replacing the throttle control actuator and throttle body, try cleaning the throttle plates and all plug-in wiring connections. Also, watch out the throttle body mounting bolts which can easily break (use care) when removing them.

P2112 Throttle Actuator Control System - Stuck Closed

Jan 12, 2010 | 2005 Ford Expedition

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