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No start issue

Tiny
WBAIR1
  • MEMBER
  • 2002 TOYOTA CAMRY
  • 2.4L
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 154,765 MILES
Engine fires has spark but will not start. I was told timing chain jump so I replaced it then I replaced all of the following;
Fuel pump and regulator.
All the relays and fuses.
E.C.M changed.
Spark plugs.
Coils.
Fuel injectors.
Still will not start, it has compression and the timing marks are correct.
Does anyone have a idea as to why car will not start? I have been working on cars for thirty eight years and this car has got me beat. The only thing I have not done was check injectors for a pulse because I do not have a noid light. I did check ohms and voltage both are in specs. Please someone help!
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Tuesday, January 3rd, 2017 AT 7:32 PM

12 Replies

Tiny
STEVE W.
  • MECHANIC
  • 13,476 POSTS
What does it do if you shoot some starting spray or gas in the intake? If it runs for a bit then you have a fuel issue. Use a test light connected to power to find injector pulse. ECM pulses the ground side.
Do you have the correct key (if it has the immobilizer option)?
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Monday, February 22nd, 2021 AT 9:04 AM
Tiny
WBAIR1
  • MEMBER
  • 7 POSTS
When I spray starting fluid into the throttle body. Does nothing? Maybe a pop but nothing more. I did use a test light on the plugin for the injector and it lit up. Far as using a noid light that is the last thing I have left to do. Which I will be getting from Advance auto parts tomorrow This would be the last thing I can check before I take it to the dealership.
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Monday, February 22nd, 2021 AT 9:04 AM
Tiny
STEVE W.
  • MECHANIC
  • 13,476 POSTS
Did you program the replacement ECM to recognize the key? If not it will not start, it will wipe out spark and fuel. You might try putting the original ECM in, then resetting it by shorting the battery cables together, then see if it recognizes the key.
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Monday, February 22nd, 2021 AT 9:04 AM
Tiny
WBAIR1
  • MEMBER
  • 7 POSTS
What do you mean exactly by shorting the cables? Touching them together for a brief second ? If the anti theft system is on would the engine still turn over and have spark? But if it is on would it only shut down the fuel injectors or fuel injector pulse? The key is somewhat wore out far as the notches on the key would a worn out key cause this?
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Monday, February 22nd, 2021 AT 9:04 AM
Tiny
STEVE W.
  • MECHANIC
  • 13,476 POSTS
Yep, just take the cables off the battery and short them together. It will drain all the power from the ECM. Then reconnect and try it, nothing to lose and it may reset the security system to read the key (if it is done with the original ECM installed).

The anti-theft usually wipes out the fuel side of things, you might get the initial prime but that is about it. A worn key should not cause it, but if the key is not read by the ECM nothing you do will make it run without it being programmed to accept that key as valid.
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Monday, February 22nd, 2021 AT 9:04 AM
Tiny
WBAIR1
  • MEMBER
  • 7 POSTS
I believe it is the anti theft that is the issue the owner said it just quit running and would not start again and the plugs are always dry so the initial prime is only happening at first crank of the motor because I do not hear injectors working. I will talk with owner for more information and post what they say tomorrow around 8:00 pm Wisconsin time. Thank you.
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Monday, February 22nd, 2021 AT 9:04 AM
Tiny
WBAIR1
  • MEMBER
  • 7 POSTS
I will ask them also if the key I have is the normal key or a back up key and if it ever came into contact with a magnet or some sort of electrical device in case the transponder is shorted out in the key.
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Monday, February 22nd, 2021 AT 9:04 AM
Tiny
STEVE W.
  • MECHANIC
  • 13,476 POSTS
If it is the security system and the key is bad. I would have a dealer quote two new keys and programming. Just be setting down, some of those are a lot money. They can tell you if it is a transponder key if you call and have them run the VIN number.

1998 to 2002 the transponder key was an option, but many had it for "security".
2003 and up have either transponder or smart keys depending on options.
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Monday, February 22nd, 2021 AT 9:04 AM
Tiny
WBAIR1
  • MEMBER
  • 7 POSTS
I just noticed rpm gauge does not move while cranking engine over.
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Monday, February 22nd, 2021 AT 9:04 AM
Tiny
STEVE W.
  • MECHANIC
  • 13,476 POSTS
Check the ohm readings on the crank position sensor (985-1600 ohms) and camshaft sensor (835-1400 ohms)
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Monday, February 22nd, 2021 AT 9:04 AM
Tiny
WBAIR1
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Will do.
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Monday, February 22nd, 2021 AT 9:04 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,690 POSTS
Hey,

Did you ever get the problem fixed?

Best, Ken
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Monday, February 22nd, 2021 AT 9:04 AM

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