I have a 97 f350 1 ton and the turbo stopped working.I know this because there is no more whine and iI don't have the power I once had .No lights came on the dash when this happend.When you start it there is a slight hiss that happens for about a second.the fins are fine also.I hope i can get some ideas Thanks
Check your MAP hose. It is the one going from the MAP sensor on the passenger firewall to the passenger side intake plenum. It should be in good condition with no cracks or holes. Also verify it is not clogged up.
You can also unplug your MAP sensor and the PCM will try to make a best guess on required boost. If it runs much better with the MAP unplugged then either the hose or sensor itself if bad.
__________________ Jim
1997 F250 HD CC 4x4 7.3L - E4OD - 3.55's EVBP Disconnected - Napa 6637 - FPR Shim 3" Down Pipe & CD
203 Stat - 170 K ++ Miles - Interceptor Scan Gauge
Probably a leak somewhere. If you still have a orange intake boot on the turbo check for cracks. Could be the plenum leaking too.
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Brownie, Ooh-Rah! USMC Member of the NRA!
'95 F350 CC 4x2 - SRW Swap, E4OD, PHP Chip, 6637 Intake, 3" Downpipe, Lost Kitty, 140v IDM, HPX, FPR Shim (65 psi), T.C. Switch, 3.55 gears
'88 F350 CC 4x4 - lots of dents, faded paint, old 7.3 IDI in pieces
I disconected the map sensor and noticed some more smoke than usual but no diffrence in power.I also checked the orange rubber pipe.It was fine.Before the turbo stopped working there was never a hiss coming from the turbo when just started,but now there is.Is that some sort of pressure relase valve?
Is your EBPV closing on you? It is located just after the turbo and is used for rapid warm up on cold mornings. There is a two wire connector just below and in front of the turbo that controls it. Just unplug it and see if your problem goes away.
__________________ Jim
1997 F250 HD CC 4x4 7.3L - E4OD - 3.55's EVBP Disconnected - Napa 6637 - FPR Shim 3" Down Pipe & CD
203 Stat - 170 K ++ Miles - Interceptor Scan Gauge
My wag as well ... Wire it open ...or gut it .....
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Rick.......
"Most stuff's just stuck & needs hittin with a hammer".... Supporter/End user of ShiftSolutions THE CURE E4/4R Trans Control. Helping Cancer patients and families
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'Life may not be the party we hoped for... but while we are here we might as well dance!'
if your turbo stops working you will have ALOT more noise, and it will be of a grinding nature, if you are hearing hissing is sounds like the orange boots are leaking, try taking them off and cleaning them, if you notice a lot of oil on the inside of the boots you might have found your problem, the boots are known to get weak over time due to oil saturation, causing leaks
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Ben
1997 F-350 PSD CC SRW 3.55 5-spd 4x4 274,000 mi and counting
3.5" dp, 3.5" exh. with side-pipe, 140v IDM, HPX, DIY intake, Stancor gpr, electric fuel, DP Tuner, T.E. 17* hpop and high hopes www.riffraffdiesel.com
1978 J-10 Sunday driver
how about we just stop guessing and take off the intake and spin the impellor, if it spins freely then there might be another issue, but mabe your bearings fried, if its hard to spin then thats obv. you issue, if not then you might have some leaky uppipes not giving you full exhaust pressure? not sure, take off both sides, the exhaust and the intake side, try wiggling the shaft if you have any play that may give you some scrapping and you migh tnot be able to hear it. let us know after you pull the intake and check that.
I would definately also check to see that the ebpv isn't stuck open. Unplugging should do nothing other than disable it (leave it open). i recently encountered a truck with the same symptons you have. unplugged the darn epbv and nothing changed, we compared the arm postion on mine to the arm position on this other truck and sure enough it was stuck closed. took a hammer and a pair of vice grips broke it free, wired it open, unplugged the 2-wire connector. Truck runs great.
... Two weeks later the tranny quit, but that's a different story.
Good Luck
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Phil
1996 F-250 7.3L Powerstroke, Heavy-Duty Automatic Transmission and Torque Converter, 4x4 Auto-Locking Hubs, 1-ton rear axle with 3.55 gears, TC lock-up, EPBV switch, FPR shimmed to 66 psi, no cat, no muffler, 238,000 miles. Best Mod Ever: Edge Evolution Delete + Dealer Reflash
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