Is there a way to check timing?
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Joined: Aug 2002
Posts: 465
From: Baytown Tx, Home of HRP
Is there a way to check timing?
Heres the deal. I put an LT1 in my car (87 IROC) and I cant get the thing to run right. It ran fine before being pulled from it's donor, and while I hade it out, I replaced the OPTI and plugs wires, water pump, the usual stuff. But it seems now that my timing is way off. The car cranks starts and runs like crap for a few seconds, and then sputters to it's death. I have checked the firing order at least 5 times, it's all correct. I have checked my wiring and it appears to be right. I have tried to find any possible grounds that may not be grounded but I think I have them all(how many are there btw). I'm very desperate for answers, I miss my car alot! Please help in anyway you can. Thank you.
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Joined: Feb 2005
Posts: 179
From: Holland, MI
Re: Is there a way to check timing?
if its an early style opti, its pretty easy to put on wrong and not really know it. If its a later style, its a lot harder. but eather way, thats probably your problem. I installed an opti wrong once a while back and it had the exact same symptoms.
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Joined: Aug 2002
Posts: 465
From: Baytown Tx, Home of HRP
Re: Is there a way to check timing?
Originally Posted by WeirdRich
if its an early style opti, its pretty easy to put on wrong and not really know it. If its a later style, its a lot harder. but eather way, thats probably your problem. I installed an opti wrong once a while back and it had the exact same symptoms.
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Joined: Nov 1998
Posts: 71,086
From: Hell was full so they sent me to NJ
Re: Is there a way to check timing?
Originally Posted by Rage
Yeah, that's what I thought. All of them are keyed and would be close to impossible to install it wrong.
Thread Starter
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Joined: Aug 2002
Posts: 465
From: Baytown Tx, Home of HRP
Re: Is there a way to check timing?
Originally Posted by OBE1 95Z28
Have you verified other contributors like fuel pressure, hot spark, fouled plugs, etc?
Thread Starter
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Joined: Aug 2002
Posts: 465
From: Baytown Tx, Home of HRP
Re: Is there a way to check timing?
It's out of a 94 Z28, and yes I used the factory 94 harness. I bought the Opti Unit from O'rielly's and I bought the MSD cap and rotor.
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Joined: Nov 1998
Posts: 575
From: St Charles MO, USA
Re: Is there a way to check timing?
you are using a mass air flow sensor correct?
what did you hook the computer power wire to? make sure its getting power all the time when the ignition is on.
what did you hook the computer power wire to? make sure its getting power all the time when the ignition is on.
Thread Starter
Registered User
Joined: Aug 2002
Posts: 465
From: Baytown Tx, Home of HRP
Re: Is there a way to check timing?
There are two power wires going to the ECM and both are hot in start and run. Yeah, I also purchased a new MAF from O'rielly's. Everything is hooke up right as far as I know, but if you guys have any suggestions, Im open to them all.
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Joined: Jun 2005
Posts: 175
From: New Britain, CT
Re: Is there a way to check timing?
CHECK YOUR COMPUTER!
you may need to reflash it, I had this same problem about a year ago...
the computer had kicked the bucket on mine
car would start, run for a few seconds, then sputter out and die
possibly shorted it out during engine swap
you may need to reflash it, I had this same problem about a year ago...
the computer had kicked the bucket on mine
car would start, run for a few seconds, then sputter out and die
possibly shorted it out during engine swap