I have recently have problems with my 98 GS-T, especially under boost and heavy load (WV hills on the interstate). It threw a CEL P0170 which is fuel trim malfunction (bank 1) running RICH. I took it to the Mitsu dealer after weeks of no luck to get it checked out. MAS, 02, and coilpack checked out ok as well as compression. The mechanic as well as the Mitsu techline they called said that they think the stock intercooler hoses are collapsing. My question is:
-Is this common?
-Has any of you had this happen?
-If so, what were your symptoms?
1998 GS-T with hard intake pipe and high flow filter. (eBay shit)
wow, 88 for the upper is alot less than I expected.
you already have hard pipes correct?
do you have a upper and lower, or just the upper?
you need to pressure test your setup before you do anything that costs more $, and while your at it.
Get a dejon intake pipe. You'll need to take off the old accordian intake pipe for the test, so you might as well put a nice new one on
Just tell them not to fix it, and get your car back and check it out.
EVO III 16G, RC 550s, rewired Walbro 190, SAFC-2, dejon tools 2.25" intake, Joe P XZ MBC, Dave Brode UIC pipe, 1G BOV, 2.5" Stainless downpipe and test pipe, HKS Hi-power exhaust, Dejon Big SMIC, Symborski shift kit, brass shifter bushings, front and rear ES motor mount inserts, Auto-Meter 30-30 boost gauge, progress sport springs, 6 Bolt w/ balance shafts removed, balanced rotating assembly, ACT 2600 Clutch, ACT XACT Streetlite Flywheel.
I agree. Get the car from the mechanic and build yourself a tester. Telling you that the hoses are on the verge of collapse is a sure sign that they have no clue what they're doing. Save yourself time and money and diagnose/repair it yourself.
'97 GSX (Off the jackstands and ready to rock)
All of this seems to have risen from that intake I just installed. I can't tell you how many times I have check all the couplers and hoses (by the way, what are those hoses for?). Everything is secure. Everything drives well in that car except under high boost. They said they checked for boost leaks, but fuck, I don't even know if they know what that is now. The plugs were so fouled (brand new autolites, yeah i know) that the bitch would barely idle when I dropped it off and they've driven 10 miles in test drives without even replacing plugs. How could you see through the fucked up plugs to get to the real problem? The shit of it is, my house is on the other side of town and the plugs are so fouled that I don't think it will make it. I'm gonna go down Monday before they supposedly put those hoses in and see what they're rationale is. Even if this is the cause of a car crippling boost leak, I think they would have seen something. There is probably a small hole in one and they're trying to get my to cop the whole set. I definitely goin down there before they try anything. Where would I get a set of hard pipes to replace the ones that are "collapsing". Although it is positive pressure, isn't the intercooler plumbing a large vacuum? I mean the possibility of collapse is there but I'm not boosting 30psi or some shit like that. What things could possibly be broken after an intake install from say, an increase in air? What could throw a P0170?
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