Car wont start

[duckman240sx]

Just bought a non running 1/93 Q45.

So i cant get it started, turns over nicely, just wont fire. Narrowed it down to pretty much no spark. Has fuel. Previous owner recently replaced the fuel pump and fuel pump module. I even in the process, thanks to this site, have jump out the module and it still pump fuel into the rails. Then i went onto spark. I pulled a plug while leaving it connected to the coil and ignitor and seen no spark. I pulled the CAS cap and it spins, but i did notice the ground wire on the CAS 4 pin connector was really corrided . But i dont know what are signs of a bad timing chain that i keep reading.

Previous owner stated it was running rough, replaced fuel pump and module and it still continued and just stop working.

So any suggestions would be awesome. Total noob when it comes to Nissans.
Modified by duckman240sx at 12:09 AM 6/8/2009

[elwesso]

Clean the crank angle sensor connector really good... Then continue to turn the car over with the pedal down all the way..

I'll bet a drink the engine is flooded assuming all other systems are good.. It might take quite a few cranks to get it to go but I bet it works

BTW to check your spark you need to ground it against the manifold, the valve cover isnt good enough...

[duckman240sx]

Well i grounded the spark plug on a metal clip on the strut tower. I will try the cleaning of the sensor and get back.

[duckman240sx]

Ok cleaned both clips going into the cas and nothing still. Guess I will try again later when a parts store is open and use something better then brake cleaner but I still think the problem might be a little deeper. O well, the fun continues lol

[elwesso]

It may quite a while to get the engine unflooded.. Keep trying with the gas pedal to the floor..

Is the check engine light coming on when you turn the key on? only other thing I can think of is maybe the ECU is somehow fried?

[duckman240sx]

Ok abouit the ecu. I tried the switch thing and the led just stays lit when turn it. I was a little confused about that whole procedure.

Is there any voltage out puts the cas is suppose to be putting out. So I can check.

Also about the security light, is it suppose to blank the whole time. It stops once I put the key but blanks again when I am cranking.

Don't know about the check engine light never really paid attention.

[Infinitiguy19]

Put the key in the drivers or passengers door lock.

[elwesso]

Put the key in the drivers or passengers door lock.

If its a security system issue the car would not turn over...

TO check the ECU codes turn the screw all the way the one direction, then all the way back the other direction.. There are directions on the front of the ECU. Seeing if the ECU is throwing a code woudl help.

when you spin the CAS the injectors click, right?

[duckman240sx]

Yeah I did that and the led just remains a solid red. No blinking or going off.

I didn't listen for the injectors. I will have to listen for that the next time I get the chance.

[duckman240sx]

Ok so no spark and i dont hear the injectors clicking.

[duckman240sx]

Also just curious. What is the little grey clip that sits on top on the dash fuse box?

[Infinitiguy19]

Ok so no spark and i dont hear the injectors clicking.

If the connector is completly cleaned and the CAS is plugged, then it could be bad.

Also just curious. What is the little grey clip that sits on top on the dash fuse box?

Its a Consult connector that the dealers use to diagnose your car. But you can now buy a interface for it so you can plug in to your car and tune the ECU, read the codes...

[duckman240sx]

Would that cause both no firing of the ignitors and injectors?

[elwesso]

Ok so no spark and i dont hear the injectors clicking.

Then i would go into the FSM and check the crank angle sensor signal..

http://www.nicoclub.com/FSM

Most of the individual engine components work the same way on the 94 Q as it does on early models.

[duckman240sx]

Well obviously wouldnt fire the ignition lol. That was a stupid question.

Thanks for the link. I will look into that.

[duckman240sx]

This one would probably be the better of the two, no?

http://www.nicoclub.com/articles.php?id=217456

I dont get test 1,2 and ground. From the picture my tester doesnt have to pointers on one side. Do i test 1 to ground then 2 to ground? Also i dont think my tester has mV option. I will have to look into that.

[duckman240sx]

Ok question. Does any one know the color code and layout for the cas 4 pin connector. I went to test it and there is no way that I could test. My car has ground as pin 1 and the hot reading 11 volts as pin 2, which is black/white. Number 3 is green/yellow and 4 is green/black which to me are signal wires. I am just purely going off that link I posted above. And not hook up pin 3 and 4 reads 5.16 volts buts that's not connected to the cas. They are in the correct color order, but to me you can't just cross 1 and 2, it would short out. One thing on ground and hot at the same time.

Someone have a picture of a 90-93 connector or can take one. Thanks.

[duckman240sx]

Ok figured it out. Bad ECU.

Thanks for all the help.

[duckman240sx]

Ok here i am back again. Haha

Moved my car this morning. Got in it later to go somewhere. It starts. I am doing something (not driving yet) and then all the sudden the car starts to die down and then shuts off. It wont start now. It cranks over. I am only throwing code 34 right now. Its still getting fuel and sounds like it wants to crank over. I even tried starting fluid and no go, just cranks, with a little sound of wanting to start. Kind of clueless yet again so i turn to NICO for some things to check.

I am going to try and throw another pump in it tomorrow as mine kind of sounds like s***, but i have my doubts as its still pumping fuel and the car didnt start at all on the starting fluid. Also did the FPCU jumping and nothing.

[duckman240sx]

Ok replaced the fuel pump and nothing, my pump was for sure on its way out though. So loud, this one now barely makes a noise. Didnt even think it was working right haha. I dont think they replaced the pump, even though they charged the previous owner for one, these terminals where so tarnished. Also got another good looking FPCU and nothing. Mine look good to. Nothing burnt.

So next is spark. What is a common spark failure? I remember people saying the ignitors really dont go bad. Coils? something controlling both of those?

[duckman240sx]

Ok i pulled a plug and it was soak in fuel. So no spark. Where do i even begin looking to get spark. I check the one wire leading up to the coil packs. Both pulled about 13.1 volts. I replaced my ecu, since that was my problem last time. Plus i needed to anyways. I had a 94 in there and was going to throw a code for secondary throttle. So i put a 90 in it now. And still just throwing a code 34. Anyhow total loss at where to start. My MAF connector is clean. Guess i can try and see if its giving out the right numbers. Any other guesses would be awesome.

[duckman240sx]

Nevermind i lied it has spark i forgot to hook the ignitor back up when i took the cover off.

I made a little improvement. I got the car to start for a moment. I sprayed alot of starting fluid in there once it got started after having to crank it for a long time it kicks over. Then i have to pump the throttle super fast for it to barely stay running.

Any ideas.

How do i test fuel pressure?

Also got it to throw another code. Code 21 Ignition Signal Circuit.

What is this part?

[Q45tech]

Rather than attemptimg to teach you automotive technolgy and design, why not spend a week reading and rereading the factory service manual where everything is explained in detail...........step by step.

Everything you could ever want to know has been discussed here in 100,000 previous posts.

[Infinitiguy19]

Check the above and also check the EGR for sticking (Push up on the EGR valve) and for any injector leaks.

[duckman240sx]

[/QUOTE]

Rather than attemptimg to teach you automotive technolgy and design, why not spend a week reading and rereading the factory service manual where everything is explained in detail...........step by step.

Everything you could ever want to know has been discussed here in 100,000 previous posts.

Thanks for the input but i am going to pass and just keep posting so people like you have a reason to post back. sound good?

I would like to thank Paul Wall for his recent help and Wes for his help before
Modified by duckman240sx at 11:52 PM 10/4/2009