1982 performance problems
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From: greenfield indiana
1982 performance problems
I was told to post this on the c4 fourm its been awhile since I've been on here busy at work and working on my car. So this winter I took my engine out to rebuild it ended up putting lunati voodoo cam with Edelbrock Estreet heads with 1.6 rocker arms shaved the intake 180 thermostat and long tube headers to straight pipes. Ya she sounds amazing well I got it running good then one night out driving the coil pack burnt out found out the ignition timing wasn't right an also didn't know you had to disconnect EST to set timing well got that done ran pretty good after replacing coil pack an setting the timming then all of a sudden it's running like crap multiple misfires pulled the plug all black an some covered in gas so I cleaned them up put them back in and started fine but still misfires the only code I am getting is 33 high low voltage to map sensor i just replaced that less then a year ago everything checks out on it so I'm trying to figure out what's going on is my computer bad do I need to get a chip since all of my upgrades I've read somewhere that could be a problem that the computer doesn't know what to do so it's flooding itself I'm just trying to see if I need to check anything before buying a chip.
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From: Arizona - If you don’t know CFI, STOP proliferating the myths around it...
I was wondering why you were posting in the 84 area, but I guess it really doesn't matter since the 84 troubleshooting manual IMO is a much better book that the 82 in a lot of respects.
First off, do you have a GM service manual? If not, I would get one and I would also buy a 84 manual for some diagrams. There is a problem with the 82 manual for troubleshooting your issue. First there isn't a 469ckt and the 82 manual shows that ckt 455 goes to the fuel pump relay...
OK, that's not right.
So, do you have a idle issue at all? In other words, does it idle rather low and or erratic? If so, you need to correct that first before trying to troubleshoot code 33.
Post back that detail and maybe a little more about your motor build and what else you have done so we can help.
First off, do you have a GM service manual? If not, I would get one and I would also buy a 84 manual for some diagrams. There is a problem with the 82 manual for troubleshooting your issue. First there isn't a 469ckt and the 82 manual shows that ckt 455 goes to the fuel pump relay...
OK, that's not right.
So, do you have a idle issue at all? In other words, does it idle rather low and or erratic? If so, you need to correct that first before trying to troubleshoot code 33.
Post back that detail and maybe a little more about your motor build and what else you have done so we can help.
