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1997 gmc 3500 5.7 changed egr when driving the van starts to back fire and **** and loses power computer says egr pintle position but egr is fine what do i do thanks

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SOURCE: 1989 jeep cherokee

possible 4 cylinder diesel engine (toyota or mitsubishi engine) match to convert or replace a 1989 cherokee jeep engine ( 6 cylinder engine) .......pls help

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SOURCE: 1997 gmc 3500 box truck. no brake lights. changed

Check the fuse.

Posted on Sep 18, 2009

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SOURCE: 1997 GMC Savana cutaway van 3500 fuel filter

cartrigde type is locted at the top of the crossmember just forward of the gas tank on driver side of the vehicle,,,,,,,,non cartradge type located on front of the fuel tank..

Posted on Jun 29, 2010

csmock132
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SOURCE: 2001 dodge 3500 van cam position sensor location

Crank sensor is in the bell housing of the transmission. Cam sensor is in the distributor.

Posted on Jul 25, 2010

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What are the probable cause(s) of DTC P1406?


Definition of Diagnostic Trouble Code P1406 Audi: EGR Temperature Sensor Range/Performance BMW: Heated Catalyst Internal Control Module Checksum/ROM Error Buick: EGR Valve Pintle Position Circuit Cadillac: EGR Valve Pintle Position Circuit Chevrolet: EGR Valve Pintle Position Circuit Ford: Differential Pressure Feedback Sensor Downstream Hose Off Or Plugged GMC: EGR Valve Pintle Position Circuit Isuzu: EGR Valve Pintle Position Circuit Lincoln: Differential Pressure Feedback Sensor Downstream Hose Off Or Plugged Mazda: DPFE Sensor Downstream Hose Off Or Plugged Mercury: Differential Pressure Feedback Sensor Downstream Hose Off Or Plugged Oldsmobile: EGR Valve Pintle Position Circuit Pontiac: EGR Valve Pintle Position Circuit Saturn: EGR Valve Pintle Position Circuit Toyota: Turbo Pressure Sensor Range/Performance Problem Volkswagen: EGR Temperature Sensor Range/Performance Volvo: Termperature Warning > 100 degrees C

Jun 18, 2015 | Cars & Trucks

1 Answer

P1406 position circuit pintle


Yes an EGR will cause a vehicle to not start. That code means EGR is not working properly and That the pintle is stuck in the open or closed position. The EGR burns the unburned fuel that wasnt burned the first time by passing it through the engine again instead of raw fuel out the tailpipe.

Jan 01, 2014 | 1997 Chevrolet Astro

1 Answer

What would be the first and most likely reason for my 1997 buick lesabre to be giving me a egr pintle position circuit malfunction?


This code indicates a problem with the EGR valve's pintle position. The EGR Valve's pintle could just be stuck in which case the problem could be fixed by cleaning the EGR valve.

If the EGR valve is electronically controlled or cleaning the valve does not fix the problem, you will most likely have to replace the EGR Valve.

Keep in mind that the EGR valve relies on inputs from other sensors to determine the pintle position. If one of these other sensors is not operating correctly, it could be giving you a false P1406 error code.

Dec 19, 2012 | 1997 Buick LeSabre

1 Answer

Trouble code P1406 Failed EGR value, Open or short circuit condition Also code P0301 misfire cylinder 1 Next steps? Information for replacing EGR value? 1997 Bonneville SE 105K


P1406 Code - EGR Valve Pintle Position Circuit
The PCM monitors the EGR valve pintle position input to ensure that the valve responds properly to commands from the PCM and to detect a malfunction if the pintle position sensor and control circuits are open or shorted. If the PCM detects a pintle position signal voltage outside the normal range of the pintle position sensor, or a signal voltage that is not within a tolerance considered acceptable for proper EGR system operation, the PCM will set DTC P1406.

CONDITIONS FOR SETTING THE DTC

Ignition 1 voltage is greater than 10 volts.
EGR Feedback is less than 0.14 volt at any time.

OR

EGR Feedback is 0.4 volt greater or less than the EGR Closed Valve Pintle Position when the Desired EGR Position is commanded to 0%.

OR

Actual EGR Position is 20% greater or less than the Desired EGR Position.
Any of the above conditions are present for longer than 20 seconds.

ACTION TAKEN WHEN THE DTC SETS

The PCM will illuminate the Malfunction Indicator Lamp (MIL) during the second consecutive trip in which the diagnostic test has been run and failed.
The PCM will store conditions which were present when the DTC set as Freeze Frame and Fail Records data.

CONDITIONS FOR CLEARING THE MIL/DTC

The PCM will turn the MIL OFF during the third consecutive trip in which the diagnostic has been run and passed.
The history DTC will clear after 40 consecutive warm-up cycles have occurred without a malfunction.
The DTC can be cleared by using the scan tool Clear Info function or by disconnecting the PCM battery feed.

DIAGNOSTIC AIDS
Check for the following conditions:

Open EGR ignition filter circuit.

An open in the EGR ignition filter circuit will cause EGR Position Error to vary erratically while the EGR valve is operating. With the ignition ON, a test light should illuminate when connected between ground and the EGR ignition filter circuit at the PCM connector. If not, locate and repair the open in the EGR ignition filter circuit.

Excessive deposits on EGR valve pintle or seat.

Remove the EGR valve and check for deposits that may interfere with the EGR valve pintle extending completely or cause the pintle to stick.

Poor connection or damaged harness. Inspect the wiring harness for damage. If the harness appears to be OK, observe the Actual EGR position display on the scan tool while moving connectors and wiring harnesses related to the EGR valve. A change in the display will indicate the location of the malfunction.

Reviewing the Fail Records vehicle mileage since the diagnostic test last failed may help determine how often the condition that caused the DTC to be set

TEST DESCRIPTION
Number(s) below refer to the step number(s) on the Diagnostic Table:

Verifies that the malfunction is present.

The PCM contains a recirculation diode which filters the EGR ignition feed for the EGR valve. The recirculation diode is connected to the ignition filter (EGR ignition feed) circuit. If the ignition filter circuit is open, Actual EGR position may be erratic when compared to Desired EGR position. An open in the EGR ignition filter circuit will cause DTC P1406 to be set after an extended period of time.
If DTC P1406 will only set under certain conditions, the malfunction may be intermittent; refer to DTC P1406 Diagnostic Aids. If an intermittent wiring problem is not present, check for a poor connection at the PCM or the EGR valve. If the connections are OK and DTC P1406 continues to set, replace the EGR valve.

This vehicle is equipped with a PCM which utilizes an Electrically Erasable Programmable Read Only Memory (EEPROM). When the PCM is being replaced, the new PCM must be programmed.


------------------------------------------------------------------------------------------------------------------------------
P0301 Code - Cylinder #1 Misfire Detected
A P0301 code means that the the car's computer has detected that one of the engine's cylinders is not firing properly. In this case it's cylinder #1.

Symptoms may include:
the engine may be harder to start
the engine may stumble / stumble, and/or hesitate
other symptoms may also be present

Causes: A code P0301 may mean that one or more of the following has happened:
Faulty spark plug or wire
Faulty coil (pack)
Faulty oxygen sensor(s)
Faulty fuel injector
Burned exhaust valve
Faulty catalytic converter(s)
Running out of fuel
Poor compression
Defective computer

Possible Solutions:
If there are no symptoms, the simplest thing to do is to reset the code and see if it comes back.

If there are symptoms such as the engine is stumbling or hesitating, check all wiring and connectors that lead to the cylinders (i.e. spark plugs). Depending on how long the ignition components have been in the car, it may be a good idea to replace them as part of your regular maintenance schedule. I would suggest spark plugs, spark plug wires, distributor cap, and rotor (if applicable). Otherwise, check the coils (a.k.a. coil packs). In some cases, the catalytic converter has gone bad. If you smell rotten eggs in the exhaust, your cat converter needs to be replaced. I've also heard in other cases the problems were faulty fuel injectors.


Check it and keep us updated.

May 03, 2011 | 1997 Pontiac Bonneville

1 Answer

I have a1996 gmc 1/2 ton with a5.7 l engine I changed fuel pump,filter plugs and wires and it misses have trouble starting it will turn over but wont fire what could be the problem


You could have a piece of carbon stuck in the pintle of the electronic EGR valve. Remove the valve (2 10mm bolts hold it on. turn it over and you should see the pintle sticking out, push it in and out a couple times and clean it out with choke cleaner spray that should help you problem. Have a good night.

Mar 12, 2011 | 1997 Chevrolet Blazer

2 Answers

My 1997 gmc sonoma truck,it has a V6,4.3 liter V-Tec failed the MIL/Check Engine Light Test due to a Warning Lamp Failure. Due to a OBD Fault Code:P1406 manufacturer specific code


This code indicates a problem with the EGR valve's pintle position. The EGR Valve's pintle could just be stuck in which case the problem could be fixed by cleaning the EGR valve.

If the EGR valve is electronically controlled or cleaning the valve does not fix the problem, you will most likely have to replace the EGR Valve. i hope this helps

Feb 08, 2011 | GMC Sonoma Cars & Trucks

1 Answer

I have a 1997 Jeep Grand Cherokee 2.5 diesel. Starts, idles and drives along motorway all fine. But when I slow down and change to lower gears/revs, to go through town, etc, get black smoke from exhaust...


Soungs like egr valve is stuck open. Take it off and look inside small hole on the bottom. The pintle inside should be all the way closed. If not then replace the egr.

Mar 05, 2010 | 1997 Jeep Grand Cherokee

1 Answer

Start up 1996 ford windstar ,runs great,get the van up to operating temp,shut off van and try to restart 15 mins later its very hard to start.....if you leave it and come back when it's cold it will start...


Not your camshaft sensor, it would not even start. Your going to have to get it scaned, but I'm thinking it may be your EGR system.

If you are comfortable performing some basic checks prior to resorting to the Ford Dealer then try pulling a vacuum on the EGR valve to make sure the pintle moves freely in both directions. While you're at it, make sure all vacuum hoses and system components hold a vacuum. Inspect the EGR valve visually for coking and contamination. Check EGR solenoids and the position sensor for electrical continuity.

Good luck and hope this helps.

Apr 13, 2009 | 1996 Ford Windstar

1 Answer

MY 89' CHEVY WITH 305 IS BACK FIRING THROUGH THE THROTTLE BODY


Chk. your egr valve, that it is not sticking and you got vacume to it. could be carboned up and is not working.

Feb 13, 2009 | 1989 Chevrolet C/K 3500

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