Header installed! Now car has problems!?!?!
Thread Starter
Instructor
Joined: Aug 2013
Posts: 173
Likes: 0
From: Bay Area Ca
Header installed! Now car has problems!?!?!
Hey guys. I just installed longtubes on my 2000 c5 FRC. Codes came up and I accidentally reset the codes and now the engine is hesitating, surging, and bucking while driving. I'm like stepping on the gas and the car isn't going anywhere and all of a sudden it jumps. Either that or I'm stepping on the gas and it hesitates badly and I'd have to restart the car. Can't get a tune till April 10.
Melting Slicks
Joined: Dec 2011
Posts: 2,234
Likes: 64
From: Gulf Coast Mississippi
St. Jude Donor '13-'14-'15
Did you hook all 4 0/2 sensors back up, did you delete any of em, Are the wires hooked up correctly (not crossed) unless you accidentally un hooked something it's got to be a crossed wire or wires at the sensors.
I'm just thinking out loud sorta.
Also I'm pretty sure there us a fuse under the hood for the sensors, not sure which one but check it as well.
I'm just thinking out loud sorta.
Also I'm pretty sure there us a fuse under the hood for the sensors, not sure which one but check it as well.
Thread Starter
Instructor
Joined: Aug 2013
Posts: 173
Likes: 0
From: Bay Area Ca
Yea they're all good. Car was running as expected after the install of the headers. I didn't have o2 extension at the time so I had to drive it a couple time with the front o2 not running but it was still fine. Then I installed the o2 extensions and it ran fine. I checked the dic to see if the right codes are on and there weren't any other codes that I should be worried about. But then I accidentally reset the codes and then all these problems started happening....
Melting Slicks
Joined: Dec 2011
Posts: 2,234
Likes: 64
From: Gulf Coast Mississippi
St. Jude Donor '13-'14-'15
Man good luck, I can't think of anything else off hand that can help, seems like it would be something simple though.
Let us know once you sort it out ok.
Let us know once you sort it out ok.
Melting Slicks
Joined: Mar 2002
Posts: 2,203
Likes: 63
From: Staten Island NY
Yea they're all good. Car was running as expected after the install of the headers. I didn't have o2 extension at the time so I had to drive it a couple time with the front o2 not running but it was still fine. Then I installed the o2 extensions and it ran fine. I checked the dic to see if the right codes are on and there weren't any other codes that I should be worried about. But then I accidentally reset the codes and then all these problems started happening....
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Race Director
Joined: Mar 2008
Posts: 12,413
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From: Rio Rancho NM
You should have codes here shortly and I'm going to guess something isn't hooked up correctly. I would go back and double check your work. All to well have I done the " I know it's right so it's not that" then go back to find out I was incorrect. Start the process over with checking the plugs and wires. insure you didn't break any of the tips off the plugs. If you put new plugs in recheck the gap. Make sure that when you plugged the wires in you heard/felt "2" clicks when plugging into coil pack. if all is good there go bacl to the 4 o2 sensors. Insure nothing got accidently unplugged like the coil pack. you will find the problem if you trace your steps
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Good luck. Hope you can find the problem and fix it without too much trouble.
Team Owner
Joined: Jan 2006
Posts: 20,800
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From: Tellico Village, Tn
St. Jude Donor '08
did you double check the wire leads going to the O2 sensors to make sure they did not touch the headers and melt through or break one of the O2 sensors. That is what my 99 FRC after header install, ran just like that. Had damaged the passenger's side 02 sensor
Instructor
Joined: Oct 2011
Posts: 205
Likes: 8
Remove O2 sensors and re-connect. Just make double sure. Maybe run just the fronts. When I installed headers I didn't bother with the rears. It's the fronts that count anyways.
Check the stupid spark plug wires. They have to 'click' into the spark plug. Hard to do with not much room to work and more sharp stuff than a tray of surgical instruments. I accidentally didn't connect one properly and it cause the car to get pretty pissed and was hesitant.
Check the stupid spark plug wires. They have to 'click' into the spark plug. Hard to do with not much room to work and more sharp stuff than a tray of surgical instruments. I accidentally didn't connect one properly and it cause the car to get pretty pissed and was hesitant.
Drifting
Joined: Jun 2010
Posts: 1,349
Likes: 3
From: US
Definitely retrace your steps. It just sounds like something isn't hooked up right. Don't stress out over it. Just start from where you finished back to the beginning and check all the connections, unplug & reconnect, etc.
The codes will be there - just let it idle and they will come back if there is an issue. Then post them here.
The codes will be there - just let it idle and they will come back if there is an issue. Then post them here.
Melting Slicks
Joined: Oct 2005
Posts: 2,989
Likes: 352
From: Carson City Nevada
Just from reading your problems here, I would start at the plug wires and make sure they were hooked up correctly. It sounds like the firing order is messed up, but I just reread your post and you stated that it ran fine at first, so I'm not so sure now. Hmmmm..... Don't get frustrated. Just go back through everything and it will be something obvious. It always is. Good luck.
