For some reason im not getting "Spark"

Tiny
TOYA439
  • 2000 DODGE AVENGER
  • 136 MILES

Tried replacing the ECU and "Flashing" the BDM at a local Dealership and theyre just beat on what the problem is

Do you
have the same problem?
Yes
No
Friday, September 21st, 2012 AT 10:10 PM

31 Replies

Tiny
KHLOW2008
  • EXPERT
  • 42,001 POSTS

Was anything done prior to this occurring?
Was the distributor tested?

Was this
answer
helpful?
Yes
No
Friday, September 21st, 2012 AT 10:32 PM
Tiny
CARADIODOC
  • EXPERT
  • 27,222 POSTS

Reflashing a defective computer won't fix anything, and reflashes address emissions and performance issues, not no-start problems. Besides that, Chrysler Engine Computers are the last thing to suspect. They just don't cause that much trouble. Have you checked for diagnostic fault codes?

Have you checked for fuel pressure or did you get hung up on the first thing you found missing, the spark? A real quick test is to measure the voltage at the ignition coil, any injector, or either small wire on the back of the alternator. You should see 12 volts there for just one second after turning on the ignition switch. You might need to check that with a test light. Most digital voltmeters don't respond fast enough to show that pulse.

What's important is does that voltage come back during cranking? That will determine the next step in the diagnosis.

Was this
answer
helpful?
Yes
No
Friday, September 21st, 2012 AT 10:34 PM
Tiny
TOYA439
  • MEMBER

They say the reprogrammed the computer, But im not sure they did all, They said theyre not recieving a pulse

Was this
answer
helpful?
Yes
No
Friday, September 21st, 2012 AT 10:48 PM
Tiny
TOYA439
  • MEMBER

And I just bought it a week ago in this condition, For very cheap so

Was this
answer
helpful?
Yes
No
Friday, September 21st, 2012 AT 10:49 PM
Tiny
TOYA439
  • MEMBER

Also the Engines computer is Mitsubishi, I guess those avengers had Mitsubishi engines and such

Was this
answer
helpful?
Yes
No
Friday, September 21st, 2012 AT 10:54 PM
Tiny
KHLOW2008
  • EXPERT
  • 42,001 POSTS

Did you test the distributor?

Was this
answer
helpful?
Yes
No
Friday, September 21st, 2012 AT 11:35 PM
Tiny
TOYA439
  • MEMBER

I didn't im not sure if Dealership did they have the car at the moment but theyre just becoming a money dump at this point.

Was this
answer
helpful?
Yes
No
Friday, September 21st, 2012 AT 11:42 PM
Tiny
KHLOW2008
  • EXPERT
  • 42,001 POSTS

Vehicle is equipped with distributor and for no spark condition, that should be the first thing to do. I wonder why they recommend a new PCM.

Was this
answer
helpful?
Yes
No
Friday, September 21st, 2012 AT 11:47 PM
Tiny
TOYA439
  • MEMBER

Well we had spark before, And we didnt have power to injectors. So we thought maybe a Used Computer would work. Once we switched it, It locked up the Body Mod.

Was this
answer
helpful?
Yes
No
Friday, September 21st, 2012 AT 11:50 PM
Tiny
KHLOW2008
  • EXPERT
  • 42,001 POSTS

Do you have spark now?

Pulsing of injectors are also related to the distributor.
If the dealer can't handle this, then you need a new dealership in town.

Was this
answer
helpful?
Yes
No
Saturday, September 22nd, 2012 AT 12:32 AM
Tiny
TOYA439
  • MEMBER

From what they last said, The dont have a spark and "Are completely lost in discovering whats wrong"

Was this
answer
helpful?
Yes
No
Saturday, September 22nd, 2012 AT 12:35 AM
Tiny
CARADIODOC
  • EXPERT
  • 27,222 POSTS

You can't have spark if you had no power to the fuel injectors. They both are fed from the automatic shutdown (ASD) relay. You either did the tests at different times when the intermittent problem was acting up during one test, or something was measured incorrectly. After almost 40 years in tv repair I can't tell you how many times I got confused from misreading my equipment or not making good contact with the probes.

As for "not receiving a pulse", that doesn't mean anything. Pulse from what? Crankshaft position sensor? Injectors? Distributor?

Yes, you will find Mitsubishi stuff on this car. It's a Mitsubishi product with the Dodge name on it. (If it has the original cd / cassette combo radio, those are built by them for all of the Chrysler car and truck models and are REAL high quality).

It just occurred to me, you checked for spark and you checked for power to the injectors, but how did you do that? There won't be any power to the injectors unless you're cranking the engine. Naturally you're cranking the engine when checking for spark.

Was this
answer
helpful?
Yes
No
Saturday, September 22nd, 2012 AT 12:45 AM
Tiny
TOYA439
  • MEMBER

We checked for the power to injectors, Once we ddint have any we changed the ECU and the body module then locked us out. So we didnt even have spark.

Was this
answer
helpful?
Yes
No
Saturday, September 22nd, 2012 AT 12:57 AM
Tiny
CARADIODOC
  • EXPERT
  • 27,222 POSTS

Were you cranking the engine when checking for 12 volts to the injectors? If not, there won't be any voltage there.

Was this
answer
helpful?
Yes
No
Saturday, September 22nd, 2012 AT 1:47 AM
Tiny
TOYA439
  • MEMBER

Yup

Was this
answer
helpful?
Yes
No
Saturday, September 22nd, 2012 AT 2:08 PM
Tiny
TOYA439
  • MEMBER

Mechanic working on my car still confused. I'm having it towed back Monday if they don't get a new guy working on it.

Was this
answer
helpful?
Yes
No
Saturday, September 22nd, 2012 AT 7:09 PM
Tiny
KHLOW2008
  • EXPERT
  • 42,001 POSTS

Ensure the timing belt has not failed.

Was this
answer
helpful?
Yes
No
Saturday, September 22nd, 2012 AT 7:17 PM
Tiny
TOYA439
  • MEMBER

The guy I bought it from thought it was that we checked it before I bought it

Was this
answer
helpful?
Yes
No
Saturday, September 22nd, 2012 AT 7:20 PM
Tiny
KHLOW2008
  • EXPERT
  • 42,001 POSTS

If you still don't have sparks, start with the distributor.

Was this
answer
helpful?
Yes
No
Please consider a donation if we helped you
Saturday, September 22nd, 2012 AT 7:25 PM
Tiny
TOYA439
  • MEMBER

The guy I bought it from thought that too. But we checked before I bought it its fine

Was this
answer
helpful?
Yes
No
Saturday, September 22nd, 2012 AT 7:40 PM

Please login or register to post a reply.

Related Engine Computer PCM Replace/Remove Questions

Recommended articles