94 z28 not starting
Thread Starter
On The Tree
Joined: Jan 2013
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From: honey brook,pa
94 z28 not starting hey everyone i am new to this site and have found alot of forums to help so i decided to start my own profile,anyhow i have a big problem my car wont start. i have 43lbs of fuel pressure and i have great spark its blue in color. i had blew a head gasket about 6 months ago and finally got all the parts and got it back together and i got it to start but i had to keep my foot on the gas to keep it running and now it dosent start at all. i thought i had my rockers adjusted wrong but ive readjusted them a dozen of times and that cant be the problem. pls someone help!!!!!!
Thread Starter
On The Tree
Joined: Jan 2013
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From: honey brook,pa
could i have a sensor bad not cousing the car to start,aslo i had bought an accel cap and rotor from summit but dont think it could be the problem since i have good spark at the plugs.
Thread Starter
On The Tree
Joined: Jan 2013
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From: honey brook,pa
ok i will try that as soon as i get back to the car tomorrow. i had the car running around 500-600 rpms but i had to hold the throttle about a 1/4 ways and i was adjusting the rockers and i got it to idle to 1000 but it started to rain and i had to put everything away since i dont have a garage and since then i couldnt get the car to start again
Thread Starter
On The Tree
Joined: Jan 2013
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From: honey brook,pa
I have checked many times but i will check again just in case.Could there be any sensors that would not let it start and if its not the wires any other suggestions of what the problem could be. I just want to drive her again after sitting for six months lol
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Verdad Gallardo In order to diagnose the car you have to take the proper steps first of which includes scanning the car for any possible codes that would prevent the car from starting such as DTC 16. Invest in an interface cable and free scanning software plus a laptop.
I just posted this in another thread. The cables can be found at www.tunercat.com
I just posted this in another thread. The cables can be found at www.tunercat.com
Teching In
Joined: Jan 2013
Posts: 27
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From: Pennsville NJ
the one you should need (1994 z28 right?) is USB/ALDL-1.
and it plugs into the laptop.
It will tell you if there are any codes stored by the PCM.
www.ttspowersystems.com is Datamaster - a free program (register after 20 uses) that will allow you to pull codes, check sensor data, monitor knock retard, etc.
www.ttspowersystems.com is Datamaster - a free program (register after 20 uses) that will allow you to pull codes, check sensor data, monitor knock retard, etc.
Thread Starter
On The Tree
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From: honey brook,pa
thanks gentelman i did download that program and i have an update i have my iac valve in my hand and i am not able to push the valve in it is stuck open could that be my problem???
You should not be pushing on the IAC pintle as you can damage it. It is a stepper motor that moves in and out to change the flow of idle air to the intake manifold runners.
It should be clean but you can damage it by forcibly trying to move it.
It should be clean but you can damage it by forcibly trying to move it.