What does a 1995 Mitsubishi Mirage 4g91 engine ignation system works

Tiny
MARDONNAS
  • MEMBER
  • 1995 MITSUBISHI MIRAGE
  • 160,000 MILES
The engine is turning over but no spark is going to the spark plugs but the distributor is working in other cars so what else can stop the spark plugs from getting a spark other than the distributor
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Monday, March 19th, 2012 AT 12:05 AM

7 Replies

Tiny
CARADIODOC
  • EXPERT
Look for a crankshaft position sensor and automatic shutdown relay.
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Monday, March 19th, 2012 AT 12:06 AM
Tiny
MARDONNAS
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Do a 1995 mitsubishi mirage 4g91 Engine tht has a distributor mounted to the left side of the engine carry a crank position sensor n where is it located n also what does a automatic shutdown relay look like n what do it do
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Tuesday, March 20th, 2012 AT 2:26 PM
Tiny
CARADIODOC
  • EXPERT
Can't say for sure where it's located but start by looking near the vibration damper / crankshaft pulley. Here's a photo from roackauto. Com to show what it looks like.

You need a signal from the crankshaft position sensor and the camshaft position sensor in the distributor to have spark.
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Tuesday, March 20th, 2012 AT 4:27 PM
Tiny
MARDONNAS
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N where does the automatic shutdown relay connect to n can u show me how the camshaft sensor n the crank position sensor look like n do they connect to the distributor by wires also is there a external ignition coil mounted to the engine when a distributor is present
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Tuesday, March 20th, 2012 AT 5:17 PM
Tiny
CARADIODOC
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I'm finding my information on rockauto. Com. Here is what they show for the ignition coil for the 1.8L engine. It sits inside the distributor. The distributor for the 1.5L looks identical but they don't list a separate ignition coil for that engine, just the entire distributor.

They also use different terminology. Instead of an automatic shutdown relay, they show an "MPI" relay which might be the same thing. To do this troubleshooting right, you should have the service manual to use for reference. The closest I can find is for a '92 model and they only show the diagram; no photos.

If you find that relay, it should have 8 wires. Check for voltage on the black / red wire. It should have 12 volts all the time.

Next, there's two connectors on the distributor. The two-wire connector has a black wire with a white stripe. That one appears it should have 12 volts coming from the ignition switch. From there things get lost. They do not show a separate crankshaft position sensor. Everything is shown contained inside the distributor but there's an Engine Computer involved too. Nothing on my diagram spells out which wires are for which functions.
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Tuesday, March 20th, 2012 AT 6:23 PM
Tiny
SHELDONC
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Can someone plz help me.I have a mitsubishi mirage with 4g91 engine carbuerator version. The distributor has 6 pins but harness only have 5. Problem is the electrical connector has broken completely off and the wires is jus hanging, so I need to figure out which colour wires go to which pins on distributor plz.
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Saturday, June 24th, 2017 AT 8:44 AM
Tiny
CARADIODOC
  • EXPERT
You need to start a new question specific to your car, engine size, and problem. This question is listed as having received a reply already, so none of the experts familiar with what you need will see your addition or have a chance to reply. That won't get you the help you need.
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Saturday, June 24th, 2017 AT 7:40 PM

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