Question about 1995 Mercedes-Benz C-Class

2 Answers

Mercedesw202 c200 pms ecu system . car wont start

Mercedesw202 c200 pms ecu system . car has spark but a weak negative pulse to injectors can operate a led but not powerfull enough to open injector .taken ecu from another running car same fault

Posted by on

Ad

2 Answers

  • Level 1:

    An expert who has achieved level 1.

    New Friend:

    An expert that has 1 follower.

    Mayor:

    An expert whose answer got voted for 2 times.

  • Contributor
  • 1 Answer

Hi I have a 1995 C200 Auto Sedan chs WDB 2020202F241703, I think I have a problem in the ECU. Only runs on two cylinders, I have changed the core pack on the 1 & 4 cylinders but the problem persists. The other problem is I don't know where the ECU (engine computer ?) is can anyone help ?

Posted on Feb 21, 2011

Ad
  • Level 1:

    An expert who has achieved level 1.

    MVP:

    An expert that got 5 achievements.

    Habit-Forming:

    Visited the website for 3 consecutive days.

    New Friend:

    An expert that has 1 follower.

  • Contributor
  • 31 Answers

Miss firing can be cause by spark or injector pulse test wiring from ecu plug to injector plugs and to coil pack.because of ecu mounted underneath waterbottle, water causes rust to wiring and by time brakes off.

Posted on May 05, 2015

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE:

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

I change crank and camshaft engine turn but wont start and there no fire coming from spark plugs


ECU fuse or a module

coil packs or exciter dissy what ever

any pulse to injectors

if she wont start
going to need a diagnostic scanner

Oct 30, 2016 | Cars & Trucks

1 Answer

Hi i got a gwm 2.8 TD not starting.check all fuses.tested injector pulse with diode test light and no pulse found.tested ecu with another gwm 2.8 and is starting with my ecu.


Not sure what a diode test light is, but I would check with a DC voltmeter for a 12 volt pulse. The pulse is very short in duration, so you might not see it. Check for spark at the spark plugs. If fuel pump is bad, you won't have fuel pressure. There are numerous reasons for an engine not starting.

May 05, 2015 | Cars & Trucks

1 Answer

2011 swift 1.5 no injector pulse no spark


blown fuse. ; is first, as per always.
2nd is scan it, did you scan it yet? that is always 2nd.
all efi engines, all ECU , all cut injectors for (noid lamp test dead?)
you said pulse,does that mean fuel pulse or electronic pulse to injector coil..... ? all injectors dead. or just 1. same for spark.
toss coin land, noid dead. all noids
loss of. NOID signals.!
1; spark
2: lose of CMP or CKP signals (cam or crank senders)
3: ecu sees wide open throttle it cuts fuel 100%
4: ecu bad, is CEL lamp dead key on? scan it.

Apr 01, 2015 | Suzuki Swift Cars & Trucks

2 Answers

What activates the fuel injecters


The crank position sensor (and or) the cam position sensor send a message to the computer. The computer then activates the fuel injectors and coils.

If you need further help, I’m available over the phone at https://www.6ya.com/expert/justin_3ae27a9d61d6acd4

Mar 03, 2015 | Cars & Trucks

1 Answer

1989 toyota pickup v6, wont start


Start with the basics....
1-Scan and/or Preform manual code retrieval
2-Test for spark
3-Test for fuel pump running /Fuel PSI
4-Test fuel injector pulse

If you need further help, reach me via phone at https://www.6ya.com/expert/ralph_2f0886b7d6af32ce

Mar 03, 2015 | 1989 Toyota Pickup SR5

1 Answer

Jaguar xj sport 3.2 no spark or injector pulse


If ECU has crank signal and engine turns over, ECU should give injectors a pulse and trigger the ignition. If not ECU might be bad. You should check power and grounds going to ECU. There are usually multiple power and grounds going into ECU

If you need further help, reach me via phone at https://www.6ya.com/expert/david_f2436a37cbb50365

Jan 06, 2014 | Cars & Trucks

1 Answer

I have a 1988 300zx non turbo 3.0 just replaced the ecu thinking it was the problem but its not. My car will turn over and it sparks, tested the fuel pressure and it makes 42lbs so thats not the problem...


The pulse to switch the coils comes from the crankshaft sensor via the ecu. Pulse to switch injectors comes from the CAMshaft sensor via the ecu. Check injector wiring plugs and confirm there is an ignition live of 12v at one side. Other side should have an earth pulse when cranking.Once you know which is missing you can trace the fault backwards. ( if no ignition live then check wiring, relay, fuse etc) if no earth switching check camshaft sensor and wiring.

May 29, 2011 | 1988 Nissan 300ZX

1 Answer

My 1990 Mitsubishi Montero Sport will crank but will not start. I tried to use starting fluid through the air filter shaft but the car still won't start. The car has been stalling before when I am idle and...


Given the year of the Montero I expect the ECU has failed or the component within the distributor which tells the ECU when to send a spark. Check for spark or fuel injector pulse. To check fuel injector pulse rent NOID lights from auto parts store. If no pulse I expect the Distributor if no fuel I expect the ECU
Best regards,
Tom

Aug 20, 2010 | 1990 Mitsubishi Montero

1 Answer

Jaguar x300 no pulse at injectors replaced ecu, what else could i


does it have a spark at the spark plug leads? if no it sounds like the crank shaft sensor!!

Mar 27, 2009 | 1995 Jaguar XJ6

Not finding what you are looking for?
1995 Mercedes-Benz C-Class Logo

980 people viewed this question

Ask a Question

Usually answered in minutes!

Top Mercedes-Benz Experts

Colin Stickland
Colin Stickland

Level 3 Expert

22484 Answers

Marvin
Marvin

Level 3 Expert

85206 Answers

Jonah Oneal

Level 3 Expert

14092 Answers

Are you a Mercedes-Benz Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...