Looking for help
Well I am new to the site and I am already looking for help.
I have a 1994 Z28 M6 that has been in the process of rebuild for about 2 years now. I finally got it on the road about 6 months ago and had a upper rear intake gasket leak, and my throttle reponse sucked to say the least. I decided that I would save my money and purchase a Edelbrock LT4 airgap intake, and a BBK 58 mm throttle body. I have had them installed for about a month and half now and I can not get the car to run. I have not had a lot of time to work on it because I go to school full time, and work 45 hours a week but I am getting out of school for the semester and want to be able to drive it in the next couple of days. Here is a list of everything that is done to the car: Stock block and bore Mahle four valve relief pistons plasma moly rings from victor reinz clevite bearing on the bottom as well as cam bearing Melling High volume oil pump LT4 hot cam 1.6 Rockers .600 manley beehive springs stock ported and polished LT1 aluminum heads Edelbrock LT4 airgap intake manifold BBK 58 MM throttle body Trickflow satin elbow New opti from GM New 8 mm plugs New spark plugs BBK shorty headers BBK 3 inch y pipe Magnaflow cat and cat back exhaust dumped into 4 inch tips Stock Injectors New EGR New MAP New TPS New IAC Custom tuned computer by PCM4less Granatelli MAF sensor EBAT CAI SLP fan switch Here is a list of the things that I have tried to do to fix the problem checked voltage on TPS sensor/ good check voltage on IAC motor/ good replaced MAF sensor with two stock ones and granatelli/ good replaced wiring harness from MAF all the way to the PCM The car ran after I put the intake and the first throttle body on it but then the throttle body siezed up. (Cheap summit crap) replaced the throttle body and now the only way that I can get it to run is by unplugging the MAF sensor hence why I replace the sensor and the wiring. I am totally stumped as to what it could be i have great fuel pressure, and the leak down test showed nothing. The only thing that it is throwing codes for is the air pump which I deleted, and the MAF not being plugged in and sending the PCM into open loop.:banghead::banghead::banghead: If anyone has any suggestions at all they would be greatly appreciated. Thanks in advance. |
Have you gauged your vacuum pressure? Hooking up to the intake manifold?
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Since you have a tune from Bryan at PCMforless, give him a call. He might be able to give you a couple pointers on where to start.
Did you match the heads on your car to the LT4 intake manifold? The LT4 and LT1 heads are different. That is not causing your no run situation, but it does need to be taken care of. |
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