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Discussion Starter · #1 ·
The engine went out the other day and started shaking violently. Checked everything and it has good compression, no metal shavings that I can tell, Timing belt is fine.

However it was not getting spark on 1 and 4.

I replaced the coil pack and the wires. It is still not getting fire on 1 and 4.

My guess is the ECU but before I go looking one is there anything else I should look at? Anyone else ever had this problem?

Why just 1 and 4?

I tried using the search function but you cannot search the just thread titles.
 

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1 and 4 always spark together, and 2 and 3 spark together. thats why it did it on 1 and 4.
 

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travr6 said:
However it was not getting spark on 1 and 4.

I replaced the coil pack and the wires. It is still not getting fire on 1 and 4.

My guess is the ECU but before I go looking one is there anything else I should look at? Anyone else ever had this problem?

Why just 1 and 4?

I tried using the search function but you cannot search the just thread titles.
travr6--
1 & 4 are at opposite ends of the same coil, and fire at the same time.

Sounds like you've got connectivity problems between the ECU and the coil if you've replaced the coil with a known-good one and it's still not firing. Check the connector at the coil pack and make sure you've got a good connection. Trace the wires back to the connector where the engine harness plugs into the firewall harness and check those connections as well. Keep your eyes peeled for nicked or cut wires.

My car had the same problem, and it turned out a new coil pack fixed it. The alternator's voltage regulator died and it was seeing 18-19V....

HTH!

C ya,
Dutch
 

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If it was ECU it will not fire at all, check for the obvious things like the connector to the coil, the HB and crank sensor for dirt and stuck on stuff. (crank sensor is a magnet).
Also check the wires and plugs, if you have a spark tester check it again.

Ill post more procedures later.
 

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The one thing that will tell it, check that the resistance on the secondaries on the coil is 14kohm.
To do that remove the spark plug wires and using a DMM in ohm setting put one probe on no. 1 and the other probe on no. 4 and check the reading if its out of spec replace the coil.
 

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Discussion Starter · #7 ·
Dutch hit it on the head.


One of the wire at the plug in to the coil was cut.

I took the plug apart and fixed the wire. Runs like a champ now.

I appreciate your input guys. I'm sure it saved me some time.
 

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Discussion Starter · #8 ·
Dutch hit it on the head.


One of the wire at the plug in to the coil was cut.

I took the plug apart and fixed the wire. Runs like a champ now.

I appreciate your input guys. I'm sure it saved me some time.
 

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travr6 said:
Dutch hit it on the head.

One of the wire at the plug in to the coil was cut.

I took the plug apart and fixed the wire. Runs like a champ now.

I appreciate your input guys. I'm sure it saved me some time.
Hey--
Glad to hear you got it running! :)

C ya,
Dutch
 

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Here to help any time
 

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yes. I was hoping you would find this thread, since it's a very similar issue to yours.
 

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I'd guess the Harmonic Balancer. It's the pulley that the crankshaft position sensor points to, at the bottom of the engine.

Casey
 
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