-----Original Message-----
From: Bill Young <toyluvr@gte.net>
To: zdoc@yosemite.net <zdoc@yosemite.net>
Date: Saturday, April 25, 1998 6:45 PM
Subject: 83 ZX GL na

Bill writes:

Doc,
I picked your email of the ZX forum page. You seem to be one of the few who give reasonable answers and don't try to reply just to hear yourself talk. Also sounds to me like you have a lot of Z experience, so I hope you can help me out a little. I am fairly competent as a shadetree kind of guy, and have a decent set of tools. But I am having some problems with diagnosis and interpreting the shop manual as well (83 Nissan). I have used several GM manuals and even later Z manuals but for some reason they seem much simpler to follow than this one.

Anyway, I am not sure if I have what the manual refers to as a EFI or ECCS engine, so not sure which set of materials to use. I do not find a page to determine what I have, other than 'component parts' pages. The ECCS page shows a turbo as a component, which I do not have, but it does show a EGR valve (EFI page does not) which I do have. In addition, the ECCS page shows a power transistor. Any thoughts on this?

But the real problem. I changed the oil today and now the car won't start! Wow!

Actually, it is acting like it is flooded. I see spark by pulling a wire and holding it close to jump, plugs are wet with fuel and pump is running. Where do I start? Would a failed TPS in full position cause flooding? Can I disconnect and start without it? I have heard of failed coolant sensors causing the ECU to think it was cold and needed enrichment to start? If I disconnect that, will the ECU set some defaults link a GM and allow the vehicle to run, albeit poorly?

Thanks in advance for any help you can offer.

Bill Young, toyluvr@gte.net, 'Bill in Clearwater' on the forum

 

Doc replies:

Bill,

Doc here, I believe that you have inadvertently caused the cylinder head temp sender to either be disconnected or that there is too much resistance in the circuit. The sensor is located on the passengers' side of the engine in the lower part of the cylinder head to the rear of the dipstick. It is a two wire EFI type connector that must be NOT GREEN!! Remove the wire clip taking care not to loose it and then remove the harness side and inspect for corrosion. On
a ZX Turbo that is at my shop I found that someone previously had broken off one of the wires from the connector and then just stuffed it in there and taped it, hoping that it would be OK. BIG Mistake!! The car Will Not Start if there is no cylinder head temp sensor, or the circuit has too much resistance! Go there First!! Then report back to me.

Next, the ECCS is on the Turbo models, you have the system described as the EFI Type. Your system does not have the power transistor.

I hope that this can shed some light on your particular problem!

ZDOC OUT

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