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Engine light keeps coming on plugged in my obd2 tool and it said fuel injector problem bad oring bad wirring abbrasive spray pattern

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  • Contributor
  • 7 Answers

Maybe here can solve your problem obd365 OBD Tools 365 Days Shop

Posted on Feb 18, 2014

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6ya6ya
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Posted on Jan 02, 2017

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  • 625 Answers

SOURCE: cold start valve problem

if you have an electric cold start valve make sure to unplug it and if keeps apling fuel with electrical conector unpluged that means the valve is not good, but if not then you have an electronic problem, possible a bad cold start sensor or cold start module or cicuit problem, and might be a time to take it to an electrical shop

Posted on Jun 17, 2008

fixincars
  • 335 Answers

SOURCE: obd1 scan tool will notaccess

A couple of ways to check and see if the computer is ok first:
check engine light must come onwith they in on position
The fuel pump must run for two (2) seconds with the key ON
There must be a 5 volt reference at sensors like map, TPS
Must communicate with scan tool
The ORANGE wires at the computer are you power input wires one has 12V all the time this is your KEEP ALIVE MEMORY
one is 12 with the Key on you MUAT HAVE VOLTAGE AT BOTH
Check the computers Ground most are out under the hood and are brown wires
Try the GM TAP TEST this is a factory authorized test with the computer connected and you verified all of the above SLAP the computer with the open hand firmly not too hard but firm see if anything changes,
Do not disconnect the battery you will erase all the codes!
Please contact me if you need any additional information.
If you find the information provided helpful please give me a good rating
www.aceautomotive1.com

Posted on Aug 14, 2008

  • 99 Answers

SOURCE: Fuel Injector Wont Spray

check wires at throttle body. can use a 12 volt test light to check for current. if you have spark it is not the ign module. set meter for 12-20volts. should have 2 fuse boxes on this model, one behind right side of dash at floorboard

Posted on Nov 30, 2008

  • 1118 Answers

SOURCE: cannot get 1987 chevy van 20 to keep running... stalls out

Best do a fuel pressure test. Should have chg. fuel filter from the get go. The only other filter is on the end of the fuel pump in tank. Bad gas and dirty gas will plug up fuel filter, hense burn pump up.

Posted on Apr 11, 2009

Molson02536
  • 3854 Answers

SOURCE: 1987 chevy s10 fuel injector problem. Install new

Check the fuel pressure at the shredder valve, you should have 13 to 13.5psi, anything other then that will give you problems in the GM TBI. If the pressure is bad, then you may have to replace the fuel pressure regulator at the bottom of the TB. 
Good luck and keep me posted. 

Posted on Jul 22, 2009

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2 Answers

What cause black smoke to becoming form my suzuki grand vitara vehicle, gas engine


black smoke is a sign of an over-rich fuel mixture.

over-rich fuel mixture is caused by many conditions.

the most common of which is dirty fuel injectors (assuming your suzuki is fuel injected, most likely it is). when injectors are dirty (or partially clogged) they spray a stream instead of spraying an atomizing pattern which often causes an over-rich fuel mixture. sometimes adding fuel injector cleaner to your gas tank can fix this. then, other times a professional cleaning is required from a shop.

monthly, or so, fuel injector cleaning will usually prevent this. personally, i add fuel injector cleaner every oil change.

Jan 21, 2015 | 2007 Suzuki Grand Vitara 4WD

1 Answer

What controls fuel delivery to cylinders on 2000 ford explorer mine instantly fouls all spark plugs


Each cylinder has its own fuel injector. If the pin hole size orifices that deliver fuel into the cylinder are gummed up or have deposits in or on them, then the fuel will be introduced into the cylinder as a stream or other unacceptable spray patterns instead of a conical shape. Chevron Techron is an excellent product that really works to clean fuel systems and injectors.

You may also have defective injectors, worn spark plugs, (they may have improper gaps), the wrong spark plugs for your engine, insufficient spark due to defective coils or the coil pack, spark plug wires that have lost their conductive integrity or a fuel pressure issue.
Good luck.
Click on link below to see how fuel delivery works.
fuel injector spray pattern Google Search

Oct 29, 2014 | 2000 Ford Explorer

2 Answers

Hyundai Accent 1.5i is getting to much fuel killing the plug,why?


If you are sure it is getting too much fuel, check the vacuum operated fuel pressure regulator. Pull off the vacuum line to it and run the engine. Give it about a minute or two, and keep checking the vacuum line fitting on the regulator valve for any evidence of gas. If the regulator has failed, gas will start coming out. The vacuum line would just pull in that gas into the intake and cause a rich running condition.

Another possibility is an injector that is stuck or is sticking open.
You should probably have the fuel pressure tested for any gas problems, rich or lean. If you have throttle body injection (as opposed to multi port injection), you can observe the fuel spray out the bottom of the one or two injectors that are used on TBI systems. Remove the air breather, and whether the engine is just cranking over or is running at idle, look at the spray pattern the injector is making. It should be a cone pattern in a fine mist, kind of sprinkling on the throttle plates below them. If there is any dripping from the injectors, that is a problem, a clog or something. They should spray out in a mist-like cone pattern. The best chance for atomization of the fuel/air mixture.

Aug 20, 2014 | Cars & Trucks

2 Answers

Got 1999mazda 1.3 hesitent on revs


  1. bad fuel
  2. bad tps.
  3. air leaks, if engine is MAF based. too lazy to look, now.
  4. clogged injectors
  5. low fuel pressures.
  6. about 25 more things, non do i guess, ever.
  7. bad spark plugs and friends, skipping 60,k mile tuneups? bad boy.
  8. battery discharging causing EFI to go nuts?
check fuses,
check the check engine light , glowing running?
scan it al 1999 here are obd2 cars, and all scan tools here work (USA) this year. so scan it. and see all those errors. post them.
list in not ordered, tune up is first.

Jun 25, 2014 | Mazda 323 Cars & Trucks

1 Answer

My sister has a 2008 suzuki XL7 that has suddenly started getting very bad gas mileage. She as around 10 gals/mile. What should she check?


which engine. ? 2.5Liter V6??????
they get 19mpg all the time. no matte,r what you do.
so 10 is bad. (wow, a near virgin car.... rare that.. this old..)
id sell it, while it still has value, Suzuki dont sell cars here in USA and Canada now, and that needs careful thought, i'd sell.)
Get at toyota or mazda .

1: IS check engine light glowing, driving? bingo. see #2
2: did you plug in any OBD2 scan tool and scan it, most good shops
will scan it for free with the full power scan tools not seen at autozoned. they have full scan that can scan ALL factory codes.
3: air cleaner dirty?
4: spark plugs fouled, (some bad gas can to do that or using junk additives, ?)
5: Fouled Injectors, run a tank of Chevron fuel or add Techron additive to fuel to clean injectors. low miles, means this car sits long time to me and fuel my be getting bad, sitting, and causing injector gum up.
I hate additives but if in a jam, Chevron works and is safe .
6: engine stuck in limphome mode. see #2
7: fuel pressure way too high, rare but is always possible,
8: leaking injectors, see 5
9: someone stealing fuel.
10: checking MPG wrong.


Mar 24, 2014 | 2008 Suzuki XL7

1 Answer

Dead cylinder number 2 bad injector number 2


use a digital volt meter,put it on the ohm scale check number 2 fuel injector should be 11 to 16 ohms if not reads zero fuel injector faulty.if numbe 2 fuel injector okay.use noid light hook it to fuel injector electrical connector with fuel injector disconnected and see if pcm is firing the fuel injector noid light should blink when cranking the engine.if light steady pcm not firing 2 fuel injector,if noid light dont light up.there is a open in the wiring connector 2 fuel injector 2. if fuel injector okay,check spark plug, carbon foul you have a bad ignition coil or wire if you see oil on spark plug you have worn piston ring or leaking valve guides allowing oil to foul out spark plug.do a compression test check compression to see condition of the cylinder.

Sep 01, 2012 | 2005 Pontiac G6

1 Answer

1989 ford stalls when idling ,runs rough at idle


Check for any trouble codes in the engine computer, and have the fuel pressure tested. If it is throttle body injection. observe the spray pattern of the injector when it pulses. You should see a cone pattern of the fuel spraying down into the intake. If it drips, or appears anemic, the injector might be partially clogged. Try some injector cleaner in the gas tank.

Mar 03, 2012 | 1989 Ford Tempo

2 Answers

Po261, po267, po270, po273, po276 po279


P0261 Cylinder I Injector Circuit Low P0270 Cylinder 4 Injector Circuit Low P0273 Cylinder 5 Injector Circuit Low P0276 Cylinder 6 Injector Circuit Low P0279 Cylinder 7 Injector Circuit Low this will hold true for each code you listed SymptomsPossible sumptoms of OBD code P0279
- Engine Light ON (or Service Engine Soon Warning Light) - Engine Misfire - Engine Run Rough - Low MPG CausesPossible causes of OBD code P0279
- Fuel Injector #7 - Faulty or Corroded Fuel Injector #7 Connector - Plugged #7 Fuel Injector - Dirty #7 Fuel Injector Possible Solutions- Clean Fuel Injector #7 Connector - Clean Fuel Injector #7 - Replaced Fuel Injector

May 31, 2011 | Ford F-250 Super Duty Cars & Trucks

1 Answer

1999 Crown victoria.codes P0174-P0171 It's reactions are the following.i have to try 2 or 3 times the ignition before it start's press gas when it starts to heat up and keep running.the most crucial is...


P0174 System Too Lean Bank 2
P0171 System Too Lean Bank 1

Have you tried to work on the fuel system side? Have you tried
fuel injector cleaner from a bottle into the gas tank?

i.e., fuel filter, fuel pump, fuel pressure readings from the rail,
fuel injectors:
Fuel Injectors Testing The easiest way to test the operation of the fuel injectors is to listen for a clicking sound coming from the injectors while the engine is running. This is accomplished using a mechanic’s stethoscope, or a long screwdriver. Place the end of the stethoscope or the screwdriver (tip end, not handle) onto the body of the injector. Place the ear pieces of the stethoscope in your ears, or if using a screwdriver, place your ear on top of the handle. An audible clicking noise should be heard; this is the solenoid operating. If the injector makes this noise, the injector driver circuit and computer are operating as designed. Continue testing all the injectors this way.
CAUTION
Be extremely careful while working on an operating engine, make sure you have no dangling jewelry, extremely loose clothes, power tool cords or other items that might get caught in a moving part of the engine.
All Injectors Clicking If all the injectors are clicking, but you have determined that the fuel system is the cause of your driveability problem, continue diagnostics. Make sure that you have checked fuel pump pressure as outlined. An easy way to determine a weak or unproductive cylinder is a cylinder drop test. This is accomplished by removing one spark plug wire at a time, and seeing which cylinder causes the least difference in the idle. The one that causes the least change is the weak cylinder.
If the injectors were all clicking and the ignition system is functioning properly, remove the injector of the suspect cylinder and bench test it. This is accomplished by checking for a spray pattern from the injector itself. Install a fuel supply line to the injector (or rail if the injector is left attached to the rail) and momentarily apply 12 volts DC and a ground to the injector itself; a visible fuel spray should appear. If no spray is achieved, replace the injector and check the running condition of the engine.
One or More Injectors are not Clicking Unplug the fuel injector connector 91055p01.jpg
Probe the two terminals of a fuel injector to check its resistance 91055p04.jpg
Plug the correct "noid" light directly into the injector harness connector 91055p02.jpg
If the correct "noid" light flashes while the engine is running, the injector driver circuit inside the PCM is working 91055p03.jpg
If one or more injectors are found to be not operating, testing the injector driver circuit and computer can be accomplished using a "noid" light. First, with the engine not running and the ignition key in the OFF position, remove the connector from the injector you plan to test, then plug the "noid" light tool into the injector connector. Start the engine and the "noid" light should flash, signaling that the injector driver circuit is working. If the "noid" light flashes, but the injector does not click when plugged in, test the injector’s resistance.
If the "noid" light does not flash, the injector driver circuit is faulty. Disconnect the negative battery cable. Unplug the "noid" light from the injector connector and also unplug the PCM. Check the harness between the appropriate pins on the harness side of the PCM connector and the injector connector. Resistance should be less than 5.0 ohms; if not, repair the circuit. If resistance is within specifications, the injector driver inside the PCM is faulty and replacement of the PCM will be necessary.

Jul 10, 2010 | 1999 Ford Crown Victoria

1 Answer

On my 1992 Ford Aerostar 3.0 Engine (fuel injection) i'm getting fuel in the crankcase. What's causing this ?


In the old days, I would have said a leaking fuel pump diaphragm, but that can't happen anymore.

Assuming the engine does not run as rough as one with a bad plug would be, then I would suspect an injector.
If an injector does not seal up when off, then about a pint of gas will slowly drip into the crankcase every night.

Remove the injectors from the manifold, but leave on the fuel rail. Then turn the key or shunt the relay in order to turn the fuel pump on for a few seconds. The injectors should only fire intermittanly when their time comes. After that there should be no drips. If one is dripping or has a bad spray pattern that is not a cone, replace it.

Jun 03, 2010 | 1992 Ford Aerostar Extended

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