1995 7.3 engine just quits while driving
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1995 7.3 engine just quits while driving
okay I have 1995 ambulance 7.3 I've had it for years and drives great all the sudden I'm driving and it quits.
does it once a week it never does it on the highway only when I'm on in the city and quits for 3 minutes then it starts right up and rise again but now it quits and it wont start up right away I have to wait a good 20 minutes to half an hour I don't know what's wrong took to diesel shop they change the fuel filter to pressure valves cost me $1000 and one week later it still does it could it be the throttle positioning sensor need help.
does it once a week it never does it on the highway only when I'm on in the city and quits for 3 minutes then it starts right up and rise again but now it quits and it wont start up right away I have to wait a good 20 minutes to half an hour I don't know what's wrong took to diesel shop they change the fuel filter to pressure valves cost me $1000 and one week later it still does it could it be the throttle positioning sensor need help.
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1995 7.3 engine just quits while driving
would a code show up on the cam sensor or throttle body sensor because we ran the diagnostics and there's no codes..
Lead Driver
Joined: Oct 2003
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From: Madison, WI
There is no throttle body; it's a diesel. The CPS usually doesn't throw a code because in the "logic" of the PCM, there's no difference between an inop CPS and the engine physically stopping. There are some ways that the CPS can malfunction and throw a code, but when it just completely fails, no, typically there's no code.
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1995 7.3 engine just quits while driving
There is no throttle body; it's a diesel. The CPS usually doesn't throw a code because in the "logic" of the PCM, there's no difference between an inop CPS and the engine physically stopping. There are some ways that the CPS can malfunction and throw a code, but when it just completely fails, no, typically there's no code.
Hotshot
Joined: Jan 2012
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From: Southern West Virginia
There is no throttle position sensor on top the engine. And what ever shop it was you took it to and they charged you $1000, I would never go back there again. You can more than likely fix this problem for about $40 and 10 minutes time.
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Cps failure will cause a no tach readout on dash. It should be turning about 200 to 250 rpm on cranking. My best guess is the fuel heater check the #22? Fuse under the hood.
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I thought truck was a no start. But still Worth inspecting the fuel heater. My fuel heater would touch the side of the canister and shut down. finally it cooked the harness and idm. But a faulty fuse allowed it to do this and never blew.
Hotshot
Joined: Oct 2003
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From: Ashland City, TN
That is great advice.
He can unplug it from the side as well if its giving him trouble.
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I would just hate to see it go until it burns up the idm like mine did not to mention the harness was an intermittent short that would send power to different places confusing the ecm causing the mechanic to chase his tail for over 2 months. Luckily for me it was a good buddy of mine or the repair bill would have been astronomical. Then I was at his shop and said screw it if it's going to be down I am going to do a fuel bowl reseal and change the fuel heater as well as the fpr spring. Pulled the fuel bowl and started cleaning it up and noticed a chared spot on the wire harness. Cut/replaced the wires and replaced the fuse and truck would fire up but idm would short out internaly and shut off changed that been running ever since no intermittent dieing/stall.
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RandyMann
1994.5 - 1997 7.3L Power Stroke Diesel
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Jun 18, 2016 10:06 AM