LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

my 93z doesnt like me :'(

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Old 04-19-2011 | 04:05 AM
  #16  
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Re: my 93z doesnt like me :'(

you really shouldn't have pissed off Fred. I would search through threads for other people having the codes you listed. maybe try apologizing to Fred. He knows his s**t. Around here, you have to try to list any and every problem and we can help you figure out what's relevant per what you are actually trying to fix. I may not know much myself, but the more i read and the more questions i ask around here, the more i learn. just try to make yourself seem more appreciative.

Last edited by L.dookie; 04-19-2011 at 05:10 AM.
Old 04-19-2011 | 05:57 AM
  #17  
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Re: my 93z doesnt like me :'(

Originally Posted by Fatdog2
I thought I blew my engine on my 93,had it towed,come to find out,it was the map sensor.It's that little black thing on top of the intake manifold.hope this helps.
What was your car doing that made you think that? Was it doing exactly what mine is?
Old 04-19-2011 | 08:35 AM
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Re: my 93z doesnt like me :'(

Originally Posted by L.dookie
you really shouldn't have pissed off Fred. I would search through threads for other people having the codes you listed. maybe try apologizing to Fred. He knows his s**t. Around here, you have to try to list any and every problem and we can help you figure out what's relevant per what you are actually trying to fix. I may not know much myself, but the more i read and the more questions i ask around here, the more i learn. just try to make yourself seem more appreciative.
I apologized to him. I read over everything befor I went to bed and I felt like an idiot.
Old 04-19-2011 | 11:42 AM
  #19  
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Re: my 93z doesnt like me :'(

I called my friend and he just told me the low temp thermostat he put in he thought it wasn't working right and he took it back out. So the car doesn't have a thermostat in it.... That can't be god..
Old 04-19-2011 | 12:08 PM
  #20  
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Re: my 93z doesnt like me :'(

Look first at the code 36...that's an optispark code and it isn't necessarily a good thing to have. Look at the wire that connects from the harness on the passenger side of the intake manifold to the optispark itself. You're looking for loose connections, corrosion on the terminal pins or bent pins. If you have any doubt, replace the cable. If there isn't anything wrong with the cable, the opti is likely failing.....let's have other chime in.

Then I think you need to find a way to get a scanner to communicate with the PCM. The ALDL connector on 93 and 94 cars doesn't have power to it like later cars do...so you need a scanner with it's own power supply or one that plugs into the lighter.

What you're looking for is what the sensors are actually reading. That water temperature sensor in the water pump helps the PCM if it should lean out the fuel mixture or not. If it thinks the engine is cold, it will keep the mixture rich and the car will run like crap.

If the Throttle Position Sensor isn't right you'll have another host of problems there as well.

Good luck!
Old 04-20-2011 | 08:32 PM
  #21  
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Re: my 93z doesnt like me :'(

Not sure what problems you would have without a thermostat but I do know you need one, and it must be the LT1 style.
Old 04-21-2011 | 01:39 AM
  #22  
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Re: my 93z doesnt like me :'(

Originally Posted by alliance12364
What was your car doing that made you think that? Was it doing exactly what mine is?
I was driving normal and all of a sudden the car starts spittin and sputterin,(sounded like rods a knockin)Backfireing,And I'm like wtf.drove some more(thinking bad gas)Acting like all the plug wires were crossed or something.Pulled over and shut her down.Waited a few minutes ,tried to start the car,and it wouldn't start,smelled gas.Threw the towel in,had it towed the mechanic.Map sensor.Hope this helps.
Old 04-21-2011 | 07:14 AM
  #23  
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Re: my 93z doesnt like me :'(

Originally Posted by Fatdog2
I was driving normal and all of a sudden the car starts spittin and sputterin,(sounded like rods a knockin)Backfireing,And I'm like wtf.drove some more(thinking bad gas)Acting like all the plug wires were crossed or something.Pulled over and shut her down.Waited a few minutes ,tried to start the car,and it wouldn't start,smelled gas.Threw the towel in,had it towed the mechanic.Map sensor.Hope this helps.
I drove it yesterday to go get some parts cus I got home early. It wouldn't start up for a lil and it finally did but idled at 2k. Shut it down and started it again and idled at a grand. Let it sit for a lil and notice it was spitting a lil water out the left tail pipe. Drove it to car quest and got a tps, thermostat, and 2 temp sensors. Drove it to pep boys got an air filter and coolant. Went around the corner to my friends house and got the 93 tb, 96 water pump, the cut up 96 harness cus idk if I'm ever gona need plugs and wires, 96 fuel rail and 96 maf (just cus I saw it y not take it) while I would drive the idle changed to 1500. It drove fine. On my way home from my friends it started bucking and stalling so I pulled over. Waited a lil. Got it to start drove it 20 feet and it fell right back on its face. I unplugged the battery, waited a half hour plugged it in and it started and went about 2 blocks and that was it. Wouldn't start. Put a paper clip in it. 15 21 36 and 43. 42 didn't pop up. 43 was a new code, knock sensor I think it was? What happened to me sound pretty much the same as you so. but when I tryed starting it I didn't smell gas. I smelt something else. I can't put my finger on it but it def smelt like something I shouldn't be around lol. Ill order a map sensor if I get a chance today. I also need to get a fuel pressure gauge. If a pump fails does it still make noise like its working? Cus I here mine no problem.

Thank you so much everyone for all your help.
Old 04-22-2011 | 03:45 AM
  #24  
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Re: my 93z doesnt like me :'(

a pump doesn't always just fail. they can get weak over time.
Old 04-23-2011 | 10:45 AM
  #25  
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Re: my 93z doesnt like me :'(

my 93 didnt like me either.... that sucker went to the toilet store... good luck
Old 04-24-2011 | 09:52 AM
  #26  
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Re: my 93z doesnt like me :'(

i did a lil test and im not getting any spark so my opti went.
Old 04-24-2011 | 10:07 AM
  #27  
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Re: my 93z doesnt like me :'(

That opti was immaculate when I sold it to matt..... terrible
Old 04-24-2011 | 04:06 PM
  #28  
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Re: my 93z doesnt like me :'(

Originally Posted by 1slow93z28
That opti was immaculate when I sold it to matt..... terrible
hahah hey mike. herd about the honda.. glad ur alright man. yea that opti looked mint so idk y it went. the water pump was prob leaking on it but i was told it could be the icm. i was gona get one from phill just to see if that was my problem but he couldnt find it.
Old 04-30-2011 | 09:32 AM
  #29  
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Re: my 93z doesnt like me :'(

update! i put a new icm and coil in last night and it started right up no problem. didnt have to fiddle with the gas or nothin. drove like a dream all over the town for about 15 min and died.. and wouldnt start. the opti should be good and the msd wires are good. i still havent checked my fuel pressure but when it died i pushed my finger on the valve and gas shot out pretty hard so idk whats going on. any suggestions?
Old 05-01-2011 | 05:53 PM
  #30  
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Re: my 93z doesnt like me :'(

the harness coming from the opti was a lil corroded i cleaned it out. i put the old tb back on it checked my fuel pressure and it was at 42. took it up the block and back. i sat and let it idle, i shut it off, started it and idled at 2k, shut it off, and started it idled at 1500, shut it off and wouldnt start. it would fire up but then quickly die. checked codes and 36 didnt come up. fuel pressure was then at 40 psi.im gona wait till tonight to see if the pressure goes back to 42 and will run again. thank you to all who helped me and gave me advise. i will keep updating
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