Question about 1992 Mitsubishi Eclipse

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How to test crank sensor and ecu 0n 1992 eclipse 1.8L . Cranks has no spark.

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Connect a test light to the plug on the ignition coil with it disconnected and crank the engine. if the light flashes the crank sensor is ok and you should replace the ignition coil. if it doesnt i would replace the crank sensor.

Posted on Nov 17, 2009

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Can ignition module cause engine to have no injector pulse even though it has spark


injector pulse from ECU

the ECU will have fault codes stored internally to find the cause

would check other sensors first
crank angle sensor or cam angle sensor could stop the pulse
immobilizer

if the engine cranks over and has spark
ignition would be the last thing i would checkout

Nov 24, 2016 | Cars & Trucks

1 Answer

1988 2.5E s10 no fuel


you mean,cranks ok, but will not start and no fuel , right>?
s10 no fuel. 1988 ( S10 blazer )
please do say , what that means.
1: car cranks and will not start. so must be out of fuel?
(over 50 causes, or better is 10 or less tests (ask)
2: same, and fuel pressure is 0 psi (spec.9-13). gauged.?
3: fuel dribble test?
4: sparks good so tired test fuel and it ran on test fuel ok? proving
loss of fueling>?
5: injector dead cranking, (eyeballs)

which was it?

1988 cars in the USA are BIG TIME TRANSITION year.
we went from CARBS to EFI.
2.5L (what is E)?
gear cam, roller HLA lifters.
your car, USA , is TBI engine,
TBI started on THIS car in 1985 (1/2 and 1/2)
Throttle body injection
an on all TBI engines, one can see it inject with eyes.
does it?
if not it can be the following things.
1: no fuel pressure, 9-13pis.
2: ECU is cutting fuel. Pressure good cranking.
2a: ECU is sending error for bad crank/cam sensors, and cuts fuel.
2b: ECU sees rpm or tacho line dead.
2c. ECU sees TPS sensor output as 4v or more cranking, this cuts all fuel.
3: if ECU is happy, it sends 12vcd to the pump, cranking.
all tests must be dont cranking or chase tail.

Jun 17, 2014 | 1986 Chevrolet S-10 Blazer

1 Answer

Mitsubishi GDI 3500 engine 6G74 it cranks but no spark any solutions


Got Mitsubishi challenger 6g74 there is no spark, changed the crank and cam sensor, fuel is coming but still no spark. please help

Apr 24, 2013 | Mitsubishi Montero Cars & Trucks

1 Answer

1999 volkswagon jetta v6 cranks but wont start


I'm having a similar issue with my '97 Golf K2 with a 2.0 I checked the resistance to the crank sensor and it was almost 900ohms with the replacement one being 500 ohms. Changed it, didn't work.


Mine was running fine driving 70MPH on the highway and just shut off. Now it cranks, fuel pump runs and it seems to be getting fuel but still no spark. I have a coil/module on order and will try it tomorrow.


UPDATE

Replaced the coil. Coil sparks once when you first turn the key on, that's it. crank sensor has already been replaced yesterday.
Injectors seem to fire (I smell fuel if I crank it a while) but still no spark.
I have 12V to the coil and 12V when cranking.

I see tons of posts with this issue but no resolutions. Come on somebody has to have been here before....

UPDATE #2

I do NOT have an injector pulse or a pulsed signal to the coil. When I crank the car the oil pressure light blinks on and off (just noticed this not sure if it is relevant)

I do get a check engine light when I turn the key on and when cranking, thought this meant ECU was good?

Any other way to test the ECU?

Could the pick up in the distributor be bad? Doesn't the pick up signal the ECU to fire the coil and injectors, I thought the crank sensor was just a TDC reference point?

------------------------------------------------------------------------

Launch X431 Master

Mar 15, 2013 | Cars & Trucks

1 Answer

No spark


Yes. No crank sensor signal usually means no spark. The ecu has to receive crank position to set spark timing. I think you've really hit a big problem. You may need to get in touch with some people who have done this mod. I've always heard it's best and easiest to swap the engine with its ecu and the wiring harness into another car. Or something more compatible with that jdm engine.

Jul 27, 2012 | Honda Civic Coupe

1 Answer

Cranks but wont start


Check for spark and gas. Try to add gas to the intake. If it starts, there is a fuel delivery problem. If it doesn't, then there may be no spark which you can test using a spark tester.
If there is no spark, the crank sensor circuit may be at fault.

Dec 12, 2011 | 1992 Ford F350

2 Answers

Dodge stealth cranks no spark no check engine light. has fuel getting delivered to engine. checked all fuses all good. Ecu is good


Thanks for choosing FixYa and welcome to the site. There are a few things that you need to test and check. You need to check your plugs/coils, wires, distributor, coil packs, cam sensor and crank sensor. Check your timing belt/chain. Since there is no check engine light, you go in blind and you will have to check and test these parts, which some can be difficult. To perform the test, you will need a wiring schematic to test to see if any wires are without power. You will need to test these while the car is cranking. Check all electrical connectors and make sure all ground wires are grounded right. You need to check the wiring going from the parts listed to the ECU as well. You may be better off having your vehicle put on a diagnostic machine to pinpoint the cause. In most cases, it is electrical rather then the actual part.

Sep 06, 2011 | 1992 Dodge Stealth

1 Answer

I have a 2000 eclipse and the night before it ran fine. The next morning I went to start it and it cranks but that's about it. I checked for spark and after I cleaned the oil off there was spark, but...


Providing a accurate diagnosis is difficult. All previous advice could be correct.

I'd look into the fuel delivery issue first. The MPI (fuel pump) relay is controlled by the engine computer (ECU). If this is OK, your Check Engine Light should be off. A test with an OBD-2 code reader will tell if the ECU really is OK, and show any error codes.

If the ECU is OK, and the fuel pump is getting power, open the gas tank cap and see if this helps the car to start. (might be worn pump issues).

If you are actually getting fuel and spark, a no-start condition will generally throw an ECU error code, see above. There may be a crank or cam sensor that has failed.

The next thing to check is that the timing belt has not slipped a few teeth. This does happen. Your engine is probably a 4G64, and you MAY get away with it without bending valves. Or maybe not.

Jun 23, 2011 | Mitsubishi Eclipse Cars & Trucks

1 Answer

Cranks, but will not start. We have spark, timing belts okay, and fuel pressure.


Do you have a tach on the dash? If so crank it over and see if rpm climb, if not you may have a crank sensor out, if you have a test light you can check for injector pulse, sometimes a crank sensor will let you have spark but no injector pulse, there is also a fuse for injectors, you have 2 wires to the injector, connect the test light to the wires and turn it over and see if it blinks.

Oct 23, 2010 | 2001 Mitsubishi Eclipse Spyder

1 Answer

No spark just assume crank sensor


No spark? If you have a multimeter turn to 20v and unplug cable to coil pack on top of motor. Run positive to middle wire and ground wherever (neg batt terminal) and see what volts you get with key turned to ON (not starting). If 0.0 then either your ASD (MFI) relay is bad or your ECU is not grounding it or it's shot. All power to ignition and fuel pump goes through the ASD relay.

Basically you want to test jumping (bypassing) this relay. Not sure about your model but it has one somewhere. My 95 Talon it's by the brake fluid reservoir (2nd from left by fuel relay). Hotwire 87 to 30.

If still no spark look into crank position sensor, camshaft angle sensor or ECU.
 

Aug 25, 2010 | 2000 Mitsubishi Eclipse

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