Join Date: Aug 2008
Thanked 2 Times in 2 Posts
iTrader Score: 0 reviews
DT 530 International,
I have a 98 International 8100, with a 300 hp dt 530 engine. the problem were having is the thing will only run smoothly if the mps sensor is unplugged and running on the default. we've replaced this sensor twice but if we try to plug it in the truch stumbles and misses, wont build proper boost. so far in our effort to get this thing running right we have replaced the head gasket ( was weeping oil) injector tubes, high pressure oil pump, mass pressure regulator, boost sensor, cleaned all terminals and connections. On the computer the truck is not showing any codes, but when the mps is plugged in it only makes 560 ish' psi but is only asking for that in the desired. when unplugged it will make closer to 750. on the road it will make upwards of 3000 psi at full throttle under load even though it's running like crap. We tried to run a TS performance inline chip but it makes the problem worse, basicall because it skews the readings from the mps, the fule pressure is 60 psi at idle, 50 psi at full throttle under load with no fluctuation.
So I'm wondering if any body has ever come across this, My mechanic is at a loss, International wants to do the things we already did, and I'm about to burn the dam thing.
2000 SLT Laramie, club cab, 5.9 cummins, 6 speed std, pacbrake, completely stock other than aftermarket rims and 295 bfg at rubber.