I have a 95 cavalier z24 2.3L that does not start. My original idea why was the computer. Well I took my computer aprt and found the spark control module. If this part is bad would that be the cause of my problem? Id rather replace the $30 part than spend more on the entire ECU. I also dont hear the fule pump kick on when i turn it over. I though that had to do with the computer but could it be just a relay?

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Well I took my computer aprt and found the spark control module

WTF are you talking about?

It's simpke for a no start. Fuel, spark and compression. Behond that is the timming witch is the last thing to think about.

Check the compression, check if it gets fuel and check for sparks.

The pump will give a 2-4 second prime and you won't hear it when cranking.



Gilles
2.3 Ho

take it to a shop,sounds like you dont know what your doing.

The fule pump was replaced. so I think that should be ok. I am probably going to take it to a garage anyway. The car does not get spark thats the whole problem. I do not know if its getting gas or not. I thought I would hear the pump kick on. The ignition module has been tested and is good. I have talked to several people and we all came to the conclusion that it was probably the computer. I took the computer appart and there is a spark control module inside. I Thought maybe if that was bad the car wouldnt get spark.

post pics of this spark control module



Im a Xbox 360 fanboy...and damn proud of it!!

https://www.rockauto.com/dbphp/prt,321,21662. I did a search for the numbers off this part 16209133 and i was brought to this site and its the second part down on the page. I e-mailed the place and this is what the told me it was The AC Delco 21662 is a spark control module for
the 1995 General Motors J body cars. Then i did a search for j-body cars and i found this site hopeing some1 could help me out.null

could be a bad starter



Im a Xbox 360 fanboy...and damn proud of it!!

How does a bad stater cause a car not to get spark?

CJ Karcher wrote:How does a bad stater cause a car not to get spark?

it wouldn't, a bad starter wouldn't turn the engine fast enough to start cause the brushs may be worn out and not making contact with the armature or its just a loose connection some where in the starter cuircit, but i don't think thats your problem.

OK i didnt think so. So does any1 know anything about these spark control modules? Or should I just take it to my machanic. It just seems to me that if the spark control module is bad the car wouldnt get spark, but i didnt know such thing existed until yesturday. I brought up the security alarm on another forum. Is it possible that the security alarm is not allowing the car to get spark? How hard would it be to take the factory alarm out if that could be an issue?

your alarm system doesn't affect your ignition system, they are two different cuircits. here is how you see if its got spark. put everything back together the way it was, stick a screw driver into the spark plug wire or if you got coil on plug unbolt the coil pack from the block and stick a screw driver in where the spark plug attaches and hold the screw driver close to a metal object, being sure you don't touch the metal or you will get shocked like hell if its got fire going to it.. thats just the easy way out. if you have the tools you could hook up a digital multi meter and test for current flow and voltage, you can test the injectors with a noid light or test light to see if there getting voltage. then test fuel pressure with a gauge attaching it to the fuel rail via a test port.

sorry forgot to mention you have to get a friend to crank the engine to get the spark plugs to fire just in case you didn't know

Never tought about taking out the crank position sensor and clean it?

Some of you should never work on cars. You all jump to the end of the list and go for computer. (not toward doubleJ)


Fuel is easy to check. Are the plugs wet or not? If they are wet, smell the gas to be sure it's not mixed with oil.

If you know you have fuel, you check the spark. If you don't have spark, you check the CPS. If the Cps test bad, replace it. That's what control the fire on almost ANY vehicule equiped with computer.

Just a bad connection can be your problem. I had the same god damn problem with the W41 and turns out being the IDI plug not correctly plugged.



Gilles
2.3 Ho

Thank you all for your help. I am just going to take it to my machanic and let him deal with it.

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Some of you should never work on cars. You all jump to the end of the list and go for computer. (not toward doubleJ)

thanks for not throwing me in the mix with that. even though i too am a noob to the site. Its very common for the beginner car enthusiast to start off with the computer when problems occur, before even checking fuses and such. bypassing the basic visual inspection and diagnostic tests all together. if you dont know what your doing take the vehicle to a shop and have them look at it, and if you want to learn to do it yourself research,research,research, and then research what you found to make sure its right info.

The fuses and relays where one of the first things i checked. I bought this car like this from a machanic that just got bored with it. Yes I am a noob when it comes to this @!#$. I am a computer tech not a machanic. I do however know my way around some parts of a car. Im not saying im an expert but i just dont like being treated like an utter @!#$ retard. I come to these forums to learn things. This is how i do my research. I you people cam to my with a computer problem i wouls assit you the best i could insted of telling you right off the bat you dont know what your doing take it somewhere. I just came to the conclusion it was the computer on the car that was bad bc 8 out of 10 people said that was the most likely problem. However i am glad i did get some more inputs bc i would have been pissed if i went and bought a computer that i didnt need.
Thanx again for all your help.

CJ Karcher wrote:https://www.rockauto.com/dbphp/prt,321,21662. I did a search for the numbers off this part 16209133 and i was brought to this site and its the second part down on the page. I e-mailed the place and this is what the told me it was The AC Delco 21662 is a spark control module for
the 1995 General Motors J body cars. Then i did a search for j-body cars and i found this site hopeing some1 could help me out.null

I DID a search in the catolog


thats a knock sensor module......

95 ONLY, j body ONLY

nice part.......

Chris <- GM parts


'02 Z-24 Supercharged
13.7 @102.45 MPH Third Place, 2007 GMSC Bash SOLD AS OF 01MAR08

oh ya, is it a 5 spd and would you want to sell it?

Chris


'02 Z-24 Supercharged
13.7 @102.45 MPH Third Place, 2007 GMSC Bash SOLD AS OF 01MAR08

The car is an automatic. I dont have any plans to sell it because the car im driving now is an 89 acclaim that is falling apart. Tho I have considered trading it for an older sport car. Depending on how much its going to cost to get it fixed idk about selling or trading it yet.