please HELP ME...engine injection cut at 4000 rpm

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please HELP ME...engine injection cut at 4000 rpm

Postby chetepongo22 » Fri 22.11.2013, 20:14

The car diagnosis test resulted in code 42( electronic spark timing circuit ), got new sparks,new coil packs,new HES...
The car cuts at 4000 rpm and the CEL light is on...no idea what could be the problem...
ANY IDEAS?
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Re: please HELP ME...engine injection cut at 4000 rpm

Postby HJ2 » Fri 22.11.2013, 20:19

Perhaps your wastegate hangs a little.
Try this:

http://wikilec.9600.org/index.php/Wastegate:_Releasing
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Re: please HELP ME...engine injection cut at 4000 rpm

Postby chetepongo22 » Fri 22.11.2013, 21:27

THANK YOU!
We will try that but before I took the elan to my mechanic it drove almost all the time with the cel light on,quite well,maybe like a little more lazy ,heavy or slow Some days I started the car and for a while the light was off and the car seemed to be that superfast car it used to be, suddenly the light came on and the lazy car came back with it...
So It does not sound like a wastegate problem , don´t you think so?I am not an expert,just a beginner
any other opinion?
thak you in advance
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Re: please HELP ME...engine injection cut at 4000 rpm

Postby rip » Fri 22.11.2013, 23:45

Sounds like your ECU has gone into 'safe mode' (can't remember the proper term).
Elans will do that for about 40 seconds after overboost, which is at 0.95 bar. Mine did it at well below that before I tinkered with the ignition timing.
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Re: please HELP ME...engine injection cut at 4000 rpm

Postby Brit-Car-Nut » Sat 23.11.2013, 00:00

When the CEL comes on, the ECU goes into "Safe Mode" aka "Limp Home Mode" and doesn't allow things to work at full performance.

Code 42 is the Electronic Spark Timing circuit as you have already stated.

I have a couple of coil assemblies that I have collected and they all had horribly corroded electrical conectors where the harness connects to the lower plate or module..

I would focus on connections and grounds to make sure everything is able to work properly.

Make sure all of the connections are nice and clean both at the hardware and the cable plugs.

ALSO, follow the guide on the WikiLEC and set your base timing.

Section EMK.5 has some details and testing suggestions for this error code.

I assume you don't have the engine management manual, so here are 2 files with the details from the manual:

Image

Image

There was too much detail to shrink them down to fit in the limited space afforded.

If you want the entire manual, request access to the Manuals area by clicking on that heading above or send me an email and I will give you another link that has it.

It is a very large file, so it will take a while to download.
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Re: please HELP ME...engine injection cut at 4000 rpm

Postby chetepongo22 » Sat 23.11.2013, 12:48

Thank you very much for the info!
I got the manuals,and have read a lot of info about my problem all night long
Electronic spark timing code 42...
We will Revise connectors,grounds and wires,( y11j and yg11m ,from the ECM D4 and D5 and from direct ignition module D and C connectors
First of all.
The car has new HES and new coil packs,new sparks,base timing set(16degrees TDBC).
My other options are?
-Could be any other sensor?
-Water on fuel tank?
-revise wastegate

What about injectors?my mechanic says that is not the problem because all cylinders fire and work smooth and fine
Thank you for your kindness and help
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Re: please HELP ME...engine injection cut at 4000 rpm

Postby Brit-Car-Nut » Sat 23.11.2013, 14:27

New coil packs doesn't mean the connections to the Ignition Control Module connections are clean. They rarely get looked at and with the coolant tank right above, they get wet and corrode too often.
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Re: please HELP ME...engine injection cut at 4000 rpm

Postby chetepongo22 » Sun 24.11.2013, 09:06

New coil packs doesn't mean the connections to the Ignition Control Module connections are clean. They rarely get looked at and with the coolant tank right above, they get wet and corrode too often.

We will revise that, I had to change the coolant tank one year ago due to leakages...
Thank you
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Re: please HELP ME...engine injection cut at 4000 rpm

Postby chetepongo22 » Tue 03.12.2013, 09:58

Connectors are clean at the ignition module,wires to ECM checked.
My mechanic says is possible the base plate has gone,everything is clean and new coil packs installed.
Other opinion?
The car reads fault code 42 and 23
Electronic spark timing circuit
Manifold air temperature low

Is the knock sensor related to code 42?has been anyone experienced with this?
Thank you guys!
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Re: please HELP ME...engine injection cut at 4000 rpm

Postby Ade » Tue 03.12.2013, 16:53

This is long a long shot but,
I have found in the past the code you see is not always related to the fault. I had a recent case where the engine was reving at 2000 rpm on tickover and the code said it was the map sensor low voltage and I believe it said something about the vacume. In the end it turned out to be a bad earth point on the side of the engine just above the alternator, follow the injector wire down just to the side of the cam belt cover. I also believe this to be the cause of a sudden intermittant total loss of power under accelleration.This happened after being in the garage to have the power steering pump changed and they spent all day trying to find the fault with no success.

I know it is a long shot but when I had trouble I was just glad of any suggestions no matter how improbable they were and on a lot of occasions it just turns out to be something silly.I also had a faulty speed sensor that put the car into safe mode.
As for the knock sensor, I did have a problem once and again the fault code said knock sensor, in the end it turned out to be the ECU.

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Re: please HELP ME...engine injection cut at 4000 rpm

Postby chetepongo22 » Wed 04.12.2013, 18:06

Thank you man.I am waiting for good news from the machanic.
He is checking base plate and other things.
I will keep you all informed
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Re: please HELP ME...engine injection cut at 4000 rpm

Postby HJ2 » Wed 04.12.2013, 20:37

How does the car respond when hitting 4.000 rpm?
Bumpy? And is this under boost or not?
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Re: please HELP ME...engine injection cut at 4000 rpm

Postby chetepongo22 » Wed 11.12.2013, 13:44

HJ2 wrote:How does the car respond when hitting 4.000 rpm?
Bumpy? And is this under boost or not?

The
Car directly cuts injection
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Re: please HELP ME...engine injection cut at 4000 rpm

Postby chetepongo22 » Wed 11.12.2013, 13:47

Does anyone know what is spare ref for direct ignition module from Lotus?
Does the one from ISUZU fit? And how much does it cost?
Everything is saying that module is the faulty thing
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Re: please HELP ME...engine injection cut at 4000 rpm

Postby lotusnut » Sun 22.12.2013, 20:09

I'd be looking at a seized or partially seized waste gate, that will give you a sudden cut in ignition/revs. When it happens, what boost are you showing?
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Re: please HELP ME...engine injection cut at 4000 rpm

Postby chetepongo22 » Wed 15.01.2014, 11:33

Now solved.After new Direct Ignition module purchased AT rockauto (it was the same isuzu)the engine raises nicely and no cuts anymore at 4000rpm.But The car appeared to have two problem.1 the security mode(ENGINE cuts at 4000rpm) now solved.2.Fault 42 electronic spark timing.My mechanic says the CAS is not going well.He means the magnétic pick up, new HES was installed,and the rotor works fine.That sensor is not reading well the timing and the engine is. Losing timing adjustment.

Does anybody know where I can find a new sensor( not HES).the magnétic one that reads rpm.Not anymore at lotus
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