94 Camaro 3.4 - Team Camaro Tech
Troubleshooting Diagnosing problems done here.

 
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post #1 of 11 (permalink) Old Sep 14th, 07, 01:35 PM Thread Starter
Garrett
 
Join Date: Sep 2007
Location: Hampton, VA
Posts: 6
Exclamation 94 Camaro 3.4

WOW where to start... There was another post with similar symptoms as mine but I'm not sure on it. I have as I said a 94 Camaro with a 95 3.4 in it. It started with just some hesitation til I got on it or over roughly 2500rpm, constantly hesitated on hills or in OD. Then I went on a road trip now it's way worse. If I floor it, it takes like 20 seconds to get to 60mph. Now I know the 3.4 is weak, but not that bad... I've changed both the O2 sensors before the cat, the TPS, the IAC, spark plugs and wires. I just put some Lucas injector cleaner in, but next step is to get the spray... any body have any suggestions?
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post #2 of 11 (permalink) Old Sep 14th, 07, 05:55 PM
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mike
 
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Re: 94 Camaro 3.4

90 percent of fuel related drivability issues can be traced back to the FUEL FILTER...lol...thats where i`d start...if not, post back and we`ll get ya goin for sure...hampton,huh...i`m lookin to go to chesapeake area...got family all over that area...

sometimes you`re the windshield and sometimes you`re the bug...
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post #3 of 11 (permalink) Old Sep 15th, 07, 05:58 AM Thread Starter
Garrett
 
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Re: 94 Camaro 3.4

Opps! Yea sry I meant to add that to the list of changes... that's was changed 1st... still no
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post #4 of 11 (permalink) Old Sep 15th, 07, 09:59 AM
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Dale
 
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Re: 94 Camaro 3.4

What is the o2 voltage when at full throttle? That will tell you if it is a fuel delivery problem. Should be over 800mv. You can use a multimeter if you don't have a scan tool.
Dale

68 Dana 302 ,68 rs 327, daily driver/family car, 71 rs, track car/ driver, 70 formula 400, 73 type LT, 98 TA, 2 goofy kids and an incredible wife.
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post #5 of 11 (permalink) Old Sep 15th, 07, 12:03 PM
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mike
 
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Re: 94 Camaro 3.4

does it buck as in possibly an ignition failure, or just bog as in a fuel issue???

sometimes you`re the windshield and sometimes you`re the bug...
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post #6 of 11 (permalink) Old Sep 15th, 07, 09:54 PM Thread Starter
Garrett
 
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Re: 94 Camaro 3.4

It seems to be just bogging like it can't pull... I don't know how to safely check o2 voltage at full throttle i could to it at idle but how long would i need it to be wide open and how many revs gettin old about to trade this piece for my friends MR2
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post #7 of 11 (permalink) Old Sep 15th, 07, 11:45 PM
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DONNIE
 
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Re: 94 Camaro 3.4

sounds like the cat converter is stoped up or fuel filter
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post #8 of 11 (permalink) Old Sep 16th, 07, 12:15 AM
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Re: 94 Camaro 3.4

Perhaps a knock sensor is picking up a false signal and retarting the timing too much. Some of the early 1990's vehicles with electronic spark control suffered from this. I haven't heard of it on many of the newer vehicles though.

Dave
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post #9 of 11 (permalink) Old Sep 16th, 07, 06:14 AM
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mike
 
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Re: 94 Camaro 3.4

yup, sounds like possibly a converter to me too...does it have a whistle out the tail pipe???can you drop the y pipe and run the car to see if the problem is gone???or pull the cat off the y pipe...either will do, and the latter is prolly safer...

sometimes you`re the windshield and sometimes you`re the bug...
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post #10 of 11 (permalink) Old Sep 16th, 07, 11:23 AM Thread Starter
Garrett
 
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Re: 94 Camaro 3.4

Quote:
Originally Posted by kustomwerker View Post
yup, sounds like possibly a converter to me too...does it have a whistle out the tail pipe???can you drop the y pipe and run the car to see if the problem is gone???or pull the cat off the y pipe...either will do, and the latter is prolly safer...
s=

It's all welded on... I can straight pipe it if that won't have and effects on the car or motor. I don't know that much about motors I know the basic components and that's about it but, I can't remove the cat by hand. To the guy earlier, I've already changed my fuel filter. Oh, a little more info on the way it's running. In P or N it idles right and everything but at 2500rpm I hear this rattling coming from under the car. Then when I engage R, 1 ,2 D, or OD it's idle drops from right under 1000rpm where it runs normal to about 5000-7000rpm and runs rough as F!@#
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post #11 of 11 (permalink) Old Sep 16th, 07, 02:34 PM Thread Starter
Garrett
 
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Re: 94 Camaro 3.4

I also forgot to mention the extremly high gas consumption...
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