Nicotrial Posted December 27, 2006 Report Share Posted December 27, 2006 Ok my problem si.. i have a 1992 chevrolet lumina euro 3.4 wich i bought not to long ago.. so i changed the belt and it was runing perfectly(it had a little misfire once in a while (even after the belt change) but then it stoped when the engine heated.. all the timing is right... so the next day i started the engine and the cilinder 2 does not work and the idle was at 2000rpm.. i checked the spark plug on the cilinder and it had spark and was dry like if no fule was going in.. another thing is that when i turn off the engine and turn it on the first seconds it work perfectly and then it starts to missfire again(number 2 cilinder actualy stops working) and after a few second the check engine lighte comes on and the engine accelerates even more... im checking if there are any vacume leaks or somthing that is keeping the engine accelerated but dont know exacly where to look i know its the cilinder 2 boucose i checked it by taking out the spark plug cables of each cilinder and checking which one made a change on the motor while it was running and when i take out the cilinder 2 cable it makes no change iv been cheking if i could of unpluged somthing while chaging the timing belt.. i saw that there is a sensor that if u unplug it the engine turns off.. i think its called a map sensor.. i took it out and cleaned it also chect if it was making good contact.. i dont know it looks more like an electrical problem ill check if its the injector tomorrow.. i dont know if the cilinder 2 not working has anything to do with the high idiel i live in spain so geting parts for this car is very dificult so anything i can do without replacing parts is better any tips or advise will be of good help Quote Link to comment Share on other sites More sharing options...
Andrew Posted December 27, 2006 Report Share Posted December 27, 2006 sounds like 2 different issues to me. 1 - lower intake gaskets. they will leak when the engine is cold, and expand stopping the leak once the engine is warm. use a can of starting fluid to spray around the lower intake manifold and see if your rpms's go up a bit. 2 - injector. i think it needs replaced. have all your injectors checked though, its likely others are close to dying as well. i had to replace all my injectors on my old Z34, cost me close to $300 US just for the injectors. an intake gasket set should cost around $65 US good luck! Quote Link to comment Share on other sites More sharing options...
z34Phoenix Posted December 27, 2006 Report Share Posted December 27, 2006 first i doubt it and intake gasket problem these engines work on a waiste spark system... that means for each plug to fire it runs the spark in one cylinder and out another. so if there is no change when you unplug that wire... that means you are really short TWO cylinders... im thinking you might have a bad coil pack. you can test this by swaping the coil with one of the other coils and if the dead cylinder moves... you found your prob. if not atleast you know its not ignition related. same goes for injectors. you can try moving the injectors and seeing if the dead cylinder moves. if you need a injector. i have a bunch laying around. PM me or send me an email at atlas3050@aol.com granted they are used but they work. i upgraded to bigger injectors on my Z34. i'll let them go cheep if you find you need one. Quote Link to comment Share on other sites More sharing options...
White93z34 Posted December 27, 2006 Report Share Posted December 27, 2006 so if it is a bad coil (and if iremeber right) cyl 5 should also not work as it shares the same coil as cyl 2. i'd wager a coil or bad injector for the misfire problem. and before i go pointing a finger at a bad intake gasket causeing a high idle what code is the car throwing? Quote Link to comment Share on other sites More sharing options...
intern8tion9l Posted December 27, 2006 Report Share Posted December 27, 2006 holy crap if this forum had a spell checker it would have just crashed on this thread Quote Link to comment Share on other sites More sharing options...
Nicotrial Posted December 28, 2006 Author Report Share Posted December 28, 2006 hey thanx for the info i took apart the intake to see if the gasket was broken but when i took it apart it cracked in half so im not soure if it was broken or not.. anyways im replacing that.. and i dont know if i should take apart the injecters just in case there is somthing that could break..(remeber im in spain and i think im the only person here that has this car and there are no parts) the thing that is realy strange is that when i start up the engine it all works fine the engine doesnt missfire or anything and it only lasts like that 3 seconds and then everything starts going wrong (i can start and stop the engine as many times i want beeing cold or not and it will always do the same thing) the cilinder 2 starts failing till it stops working and the engine get accelerated and seconds later the check engine lighte comes on and it accelerates even more.. its idleing at 2000-3000 rpm i cant see what codes its throwing i dont have an obd 1 reader Ohh and intern8tion9l i live in SPAIN so criticize your face and not my writing and help me out with the car.. Si quieres te hablo en castillano gilipollas aver si lo entiendes mejor!! Quote Link to comment Share on other sites More sharing options...
Cam'ron Posted December 28, 2006 Report Share Posted December 28, 2006 ohh thems are fightin words Quote Link to comment Share on other sites More sharing options...
intern8tion9l Posted December 28, 2006 Report Share Posted December 28, 2006 haha, come on dude it wasn't only you! its ok to joke around a bit on here. however i don't think your comment there was a joke Quote Link to comment Share on other sites More sharing options...
gimper Posted December 28, 2006 Report Share Posted December 28, 2006 Hello, Ah one more in Europe -- I'm a bit to the north of you :-)... good luck getting parts in Spain not going to be easy. Best bet besides the US for parts are, Sweden, Belgium and Germany - forget the UK it’s a shit expensive and no parts either. Looks like you managed to get a belt, so there must be some parts in Spain too :-). Anyways, I have a OBDI scanner that you can borrow if you want (PM me) or you can buy a cable from http://www.obd1.com just remember to get the serial cable. In regards to your problem test swapping your coil packs around to see if the problem moves. You can do the same for the injectors but I would recommend to get some new o-rings for the first otherwise you will just get more problems due to vacuum leaks around the injectors (dry rotten orings will leak). You can have the injectors cleaned and checked but its expensive in Europe (at least where I live), so it's actually cheaper to buy them from http://www.fiveomotorsport.com even if its on the other side of the pond. In regards to the spelling -- chill down :-), a tip can be to down load OpenOffice (free opensource office suit) type the message in the word processor and correct the spell errors and then cut and paste it into the message box - sure it will not detect all errors but it might catch some of them. Anyways if you have any more problems PM me and I will try to help you out -- even if you want to sell the car due to all problems. Cheers Gimper... Quote Link to comment Share on other sites More sharing options...
PCGUY112887 Posted December 29, 2006 Report Share Posted December 29, 2006 If you cracked the gasket when you took something (anything) off your going to need to replace that gasket... Quote Link to comment Share on other sites More sharing options...
White93z34 Posted December 29, 2006 Report Share Posted December 29, 2006 here is everything you need to know about checking codes on your lumina. http://www.w-body.com/ecm-codes.html Quote Link to comment Share on other sites More sharing options...
Nicotrial Posted December 29, 2006 Author Report Share Posted December 29, 2006 ok i replaced the gasket i checked all the vacume tubes and tightend them up and i started the engine and it worked perfectly(i used it all day and haded runing for a while)... leter the next day i started the engine again and the same problem idle araond 2000rpm... i was toching araond and diskonected the O2 sensor and saw that when i start the engin it revs to 3000rpm so i conected it again started the engine and it started normal.. then i turn it of and on again and the idle was at 2000rpm.. i took out the senser cleaned it out just in case.. and after a cuple of starts and plugin and unpluging the sensor the idle came down to 900rpm 1000rpm.. and till now its been like that... ok now i got a new problem another one of the cilinders is also starting to fail.. and since its failing looks like all the gas is burning inside the catalyst converter and it started to heat up an smoke started to come out where the gear lever is..... ok now i just started the engine (1 hour has passed since i last started it again) to show my dad that it was working.. and its idling at 2000rpm... DAME IT... this sux ohh the belt i had it mailed too me by a frind from miami ohh and about the spelling thing.. no hard feelings.. i was just in a bad mood because i cant get this thing fixed.. Quote Link to comment Share on other sites More sharing options...
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