replaced o2's now car won't start!!!
#1
replaced o2's now car won't start!!!
First of all, any help would be appreciated! I bought a 95Z some months back with around 135K. Two days later it started severely overheating. To try and make a long story short there was water in the some cylinders and a blown headgasket. Proceeded to tear down the top half and start refreshing. At this time I installed headers and true duals. I got the heads resurfaced and new seals new gaskets, new delco plugs, wires, water pump, and hoses, new cap and rotor, new coil, and a rebuilt distributor (money was tight). I also deleted the air and egr. After all that the car ran good for about a week and then came my new problem, the car started missing badly and running very rich. I just replaced the 2 oxygen sensors and at first car wouldn't crank. Tried a second time and it cranked revved up to about 2K then idled down to about 800 where it was very erratic. It started sounding like it was about to go dead so I shut it off. Now car won't crank at all???
#4
Re: replaced o2's now car won't start!!!
I removed my egr on a basically stock car and it still runs fine. No problems at all. When you say it won't crank do you mean it doesn't do anything, or the car cranks, but doesn't fire?
#5
Re: replaced o2's now car won't start!!!
It will turn over, just not start. When it had the original o2's before the swap and it was missing and running rich, the car would run fine until it reached operating temp then would start missing. Also after it would start missing while driving sometimes it would just go away and run fine for a while then start back missing?? So I replaced the o2's and now she won't start!
#6
Re: replaced o2's now car won't start!!!
Doesn't seem like an O2 problem. The car runs in open loop until it's warmed up anyway. Sounds like you crossed some wires, have loose wires, or a bad opti. Check all your fuses.
Dan
Dan
#8
Re: replaced o2's now car won't start!!!
Originally Posted by jbh2317
First of all, any help would be appreciated! I bought a 95Z some months back with around 135K. Two days later it started severely overheating. To try and make a long story short there was water in the some cylinders and a blown headgasket. Proceeded to tear down the top half and start refreshing. At this time I installed headers and true duals. I got the heads resurfaced and new seals new gaskets, new delco plugs, wires, water pump, and hoses, new cap and rotor, new coil, and a rebuilt distributor (money was tight). I also deleted the air and egr. After all that the car ran good for about a week and then came my new problem, the car started missing badly and running very rich. I just replaced the 2 oxygen sensors and at first car wouldn't crank. Tried a second time and it cranked revved up to about 2K then idled down to about 800 where it was very erratic. It started sounding like it was about to go dead so I shut it off. Now car won't crank at all???
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teedoff59
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08-08-2002 01:36 AM