I've been troubleshooting a random no start issue in my 87 lt for about a month now. At first i wasn't getting any spark, so i replaced everything from the distributor to the to the plugs and car ran fine for about a week. Car began having hard starts. Then after smelling fuel i assumed it was running rich after replacing a cts, car started with no problems, no longer smelling of fuel. Now I'm getting diagnostic codes 13 and 34 which are lean o2 and high maf/map/pressure sensor circuit pressure/low voltage. Now when i start my car, i have to pump the gas pedal as im cranking to get it to start. 9 times out of ten the car will start, then immediately dies wether im giving it gas or not. This is really starting to drive me nuts, if any one can offer any help please please let me know what is going on or help me troubleshoot this and get it fixed.