4.6L (1996-2004 Modular) MustangTechnical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within. Sponsored by Cruizin Concepts
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just installed a 4.6 into a 96 cougar, motor starts and idles just fine. trying to drive the car it has NO power and will not rev up past about 2500 rpms in gear driving or while in park.
it sat for about 6 months before i got it with a 1/4 tank of gas. we put 15 bucks in the tank last night to thin out the old gas but it made no difference at all. i've checked the spark plug wires and firing order and i had #7 and #8 crossed, fixed that but it made no change. i've unhooked each fuel injector to make sure they were working and i noticed a change each time so they appear to be ok. i've checked over all vacuum lines and sensor plugs and didn't find anything unhooked. tried unplugging MAF sensor to make sure its working and it definitely is, tried unhooking TPS sensor and it seemed like it was workign as well.
im going to grab a fuel filter and fuel pressure gauge now, any idea what the idle pressure should be? any other ideas what could be wrong?
also it looked like 3 of the 4 water jackets where the intake meets the head were weeping last night, but today they look dry. the gaskets were in perfect shape when i installed them and i torqued everything to 18 lbs and used the sequence as listed on the intake manifold.
input would be great
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i have also heard of people just taking them out, plugging the holes, and zip tying the sensors up under the car so they are reading the outside air, and giving a reading that says the cats are working. i havent tried it, but sounds like it might work
DRIVE A HYBRID MY MUSTANG NEEDS YOUR GAS
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