Browning Posted May 12, 2009 Report Share Posted May 12, 2009 1998 Neon 2.0 129k Doesn't do it all the time and just started yesterday. Seems to do it when the transmission kicks down, or you're going up a hill or something and it's on a strain. It'll start jerking(missing?) for a couple seconds and sometimes makes a sound like it's backfiring through the TB. Just one pop then lines itself out and it's fine again. It's my girlfriends car. I haven't drove it yet but she says she can feel it in the pedal when it "pops." Not sure how long it's been since it's had a tune up or anything. Quote Link to comment Share on other sites More sharing options...
Farkas Posted May 12, 2009 Report Share Posted May 12, 2009 So you don't know exactly what the car is doing, and you don't know if it's backfiring through the throttle body or not.. I see this going somewhere fast. If it hasn't had a tune-up anytime in this era, check the plugs, wires, maybe the AFM or TB if they're dirty, air filter.. etc. You can at least check that yourself and report back... hell, maybe even drive it and give us a better description of the problem. Quote Link to comment Share on other sites More sharing options...
John Bruh Posted May 12, 2009 Report Share Posted May 12, 2009 isnt that normal for a neon? Quote Link to comment Share on other sites More sharing options...
Browning Posted May 12, 2009 Author Report Share Posted May 12, 2009 So you don't know exactly what the car is doing, and you don't know if it's backfiring through the throttle body or not.. I see this going somewhere fast. If it hasn't had a tune-up anytime in this era, check the plugs, wires, maybe the AFM or TB if they're dirty, air filter.. etc. You can at least check that yourself and report back... hell, maybe even drive it and give us a better description of the problem. http://smiliesftw.com/x/hsugh2.gif I plan to drive it tonight. I posted this now to see if any one had any thing to check just based off of what I typed. Quote Link to comment Share on other sites More sharing options...
Farkas Posted May 12, 2009 Report Share Posted May 12, 2009 http://smiliesftw.com/x/hsugh2.gif I plan to drive it tonight. I posted this now to see if any one had any thing to check just based off of what I typed. Yeah, check the car Quote Link to comment Share on other sites More sharing options...
Guest Removed Posted May 12, 2009 Report Share Posted May 12, 2009 check basic tune up parts..plugs and wire's. look for white stains around the coil pack.. it could be failing, and causing spark jump! Quote Link to comment Share on other sites More sharing options...
Browning Posted May 12, 2009 Author Report Share Posted May 12, 2009 it's def. popping through the TB. Let off the gas and it stops, give it more fuel and it keeps popping. Wires look weathered, no white stuff around the coils. Kinda weird that it just started out of the blue like that. Quote Link to comment Share on other sites More sharing options...
ODoyle Posted May 12, 2009 Report Share Posted May 12, 2009 Do a tune up..If it doesnt fix the problem it needed it anyways. Quote Link to comment Share on other sites More sharing options...
Browning Posted May 12, 2009 Author Report Share Posted May 12, 2009 would bad plugs/wires/coil cause it do do that though? Quote Link to comment Share on other sites More sharing options...
Guest Removed Posted May 12, 2009 Report Share Posted May 12, 2009 it's def. popping through the TB. Let off the gas and it stops, give it more fuel and it keeps popping. Wires look weathered, no white stuff around the coils. Kinda weird that it just started out of the blue like that. pull the plug boots out of the valve cover and see if they are soaked in oil. coil could still be cross firing. you be having crank cam sensor issue's but lets start with the basic's first. Quote Link to comment Share on other sites More sharing options...
Guest Removed Posted May 12, 2009 Report Share Posted May 12, 2009 would bad plugs/wires/coil cause it do do that though? yes Quote Link to comment Share on other sites More sharing options...
ODoyle Posted May 13, 2009 Report Share Posted May 13, 2009 would bad plugs/wires/coil cause it do do that though? Yep Quote Link to comment Share on other sites More sharing options...
RadDawg Posted May 14, 2009 Report Share Posted May 14, 2009 Jumped timing belt? One tooth off, maybe? Timing is contolled by sensor on cam, so pop cover and line up timing marks. Quote Link to comment Share on other sites More sharing options...
Guest Removed Posted May 15, 2009 Report Share Posted May 15, 2009 Jumped timing belt? One tooth off, maybe? Timing is contolled by sensor on cam, so pop cover and line up timing marks. when those jump time, they bend valves and dont run at all. Quote Link to comment Share on other sites More sharing options...
Browning Posted May 15, 2009 Author Report Share Posted May 15, 2009 (edited) Jumped timing belt? One tooth off, maybe? Timing is contolled by sensor on cam, so pop cover and line up timing marks. this is what I was worried about. Is it safe to assume the timing belt is fine gearhead? edit-was told these neons are bad for the threads coming out with the spark plug? Any tips to avoid this if true? Edited May 15, 2009 by Browning Quote Link to comment Share on other sites More sharing options...
31rx7 Posted May 15, 2009 Report Share Posted May 15, 2009 Is the Check Engine light on? What's the code? Don't know how to check it? http://faq.neons.org/faq/FAQ_MAINT.html#OBD Quote Link to comment Share on other sites More sharing options...
Guest Removed Posted May 15, 2009 Report Share Posted May 15, 2009 this is what I was worried about. Is it safe to assume the timing belt is fine gearhead? edit-was told these neons are bad for the threads coming out with the spark plug? Any tips to avoid this if true? it would be a good idea ot check, but if its off, the valves could very well be bent causing the back fire. i havent ever had issue with spark plugs tho Quote Link to comment Share on other sites More sharing options...
Browning Posted May 15, 2009 Author Report Share Posted May 15, 2009 Is the Check Engine light on? What's the code? Don't know how to check it? http://faq.neons.org/faq/FAQ_MAINT.html#OBD no check engine light and the car still runs great overall Quote Link to comment Share on other sites More sharing options...
Guest Removed Posted May 15, 2009 Report Share Posted May 15, 2009 no check engine light and the car still runs great overall then i highly doubt its the timing belt then Quote Link to comment Share on other sites More sharing options...
Browning Posted May 15, 2009 Author Report Share Posted May 15, 2009 ok, great. I'm going to change plugs and wires today and see where that puts it. What's better, changing plugs while it's cold or warm? I've always done it cold but guy at advance said warm is best. Quote Link to comment Share on other sites More sharing options...
Guest Removed Posted May 15, 2009 Report Share Posted May 15, 2009 warm..not real hot, but warm..its easyer for the aluminum to be expanded from the plugs when removing them. but if it feels like they dont want to move, then dont force them. thats when they start pulling threads and so on. oh and dont over tighten them Quote Link to comment Share on other sites More sharing options...
Browning Posted May 15, 2009 Author Report Share Posted May 15, 2009 Thanks Rob:) Quote Link to comment Share on other sites More sharing options...
Browning Posted May 15, 2009 Author Report Share Posted May 15, 2009 seems to be fixed now. Well, it hasn't done it yet. Changed the air filter too, it was pretty nasty. Quote Link to comment Share on other sites More sharing options...
ODoyle Posted May 15, 2009 Report Share Posted May 15, 2009 :thumbup: Quote Link to comment Share on other sites More sharing options...
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