I have a 93 Blazer with the 4.3 CPI and I have not had any trouble with it since I got it 6 years ago. Recently the vehicle sat for over a year and then the first time it was drove after that was a 850 mile trip where I got 25 miles to the gallon, I did the normal things to try to make sure it would make the trip changed the oil, air filter, checked the air pressure and all that good stuff. I went from ND where the altitude was around 1,000 ft. When I got to where I was going I am now at almost 7,000 ft. It ran like a top for the long drive and for the first two days here but all of a sudden it started running really rough at idle only. When there is pressure on the gas pedal it seems to run fine but as soon as I let off it starts to spit and miss and sometimes it dies when it dies there is no starting it until I unhook the battery and let the computer reset. I got a error code saying that it was the map sensor so I replaced that and nothing changed now it is giving me an error code of 32 which from the book that I used there is no code 32 for this vehicle I took the motor apart to look at the injector and plastic fuel lines to see if there was a leak or anything inside the engine and there was a little gas sitting in there. Then I turned the key on to prime the system to see if there was a leak while under pressure but there was nothing I cleaned it out and tried it again and there was no gas in there the next thing I was thinking of replacing is the egr valve but that part is kind of spendy for this motor and I would like to stay away from replacing parts I dont have to. If there is anyone who has had similar problems or anything like this happen and know what might be wrong with it please help me I love the vehicle and do not want to get rid of it. It also does loose vacuum sometimes while driving but that comes and goes Please Help Me!
have the same problem?
Monday, September 29th, 2008 AT 9:54 PM