pre-detonation/ping
11-26-2007, 08:20 PM
#21
5th Gear Member
Join Date: Jun 2007
Location: NC
Posts: 2,112
RE: pre-detonation/ping
A quick check of the MAF senor and throttle positon senor may help with the lean code. The filments of the senor in the MAF housing need to be clean( I think you need a T-20 bit to get it out). I would also run some complete fuel system cleaner through it, maybe even back-to-back tanks. Also, change the fuel filter, like mrj mentioned, it probably needs doing anyways. My 94 pinged on premuim gas as well, cleaning the MAF helped out tremendiously.
11-27-2007, 12:25 PM
#22
Thread Starter
Join Date: Nov 2007
Location:
Posts: 6
RE: pre-detonation/ping
When replacing the fule filter, do I need to relieve linepressure at the schrader valve? of can I just wrap a rag aroung it totry and contain the fuel+remove & repalce the filter? Thanks for all the help/suggestions so far.
nick
nick
11-27-2007, 01:00 PM
#23
5th Gear Member
Join Date: Sep 2004
Location:
Posts: 3,145
RE: pre-detonation/ping
I usually let the car sit for a couple hours before I do the fuel filter that way the pressure has all bled off. Even still, when you pull the fuel line off, some fuel will run out, but nothing spectacular. I just hold it with a rag while I pull the old filter out, and put the new one in. Takes like 5 min to do the whole thing.
