Stranded in mexico! Help!
#1
02-17-2018, 10:22 AM
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Stranded in mexico! Help!
Hola,
okay enough of the crap.
Heres the skinny, we have a 1989 b250. 5.2l TBi.
When coming to a stop, the idle would drop to zero and stall.
We brought it to a shop and they blocked the egr and detached the vacuum hose from the fuel pressure regulator.
That seemed to stop it from dying at stops but it smells rich and the idle is a bit rough.
Does anyone know why reattaching the vacuum line to the FPR would cause it to die instantly now?
We bought a new FPR and if I plug the hose in before starting the engine, the idle will surge once started but if I start it with it unplugged it's just a bit rough, no stall. Then if I plug it in after starting it, it dies instantly.
Fuel pressure test showed pressure dropping to zero when foot comes off the pedal. (With everything hooked up)
Can anyone give advice?
Newer parts include
injectors
FPR
plugs
wires
O2 sensor
TPS
EGR
okay enough of the crap.
Heres the skinny, we have a 1989 b250. 5.2l TBi.
When coming to a stop, the idle would drop to zero and stall.
We brought it to a shop and they blocked the egr and detached the vacuum hose from the fuel pressure regulator.
That seemed to stop it from dying at stops but it smells rich and the idle is a bit rough.
Does anyone know why reattaching the vacuum line to the FPR would cause it to die instantly now?
We bought a new FPR and if I plug the hose in before starting the engine, the idle will surge once started but if I start it with it unplugged it's just a bit rough, no stall. Then if I plug it in after starting it, it dies instantly.
Fuel pressure test showed pressure dropping to zero when foot comes off the pedal. (With everything hooked up)
Can anyone give advice?
Newer parts include
injectors
FPR
plugs
wires
O2 sensor
TPS
EGR
#2
02-17-2018, 10:25 AM
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#3
02-18-2018, 09:46 AM
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02-22-2018, 09:49 AM
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#6
02-27-2018, 02:16 PM
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I replaced the idle speed motor with a spare one I had on hand (from a junkyard)
nothing changed. Does the ecu have to relearn anything after installing new parts?
Will it take a few hours of driving for it to steady the idle?
nothing changed. Does the ecu have to relearn anything after installing new parts?
Will it take a few hours of driving for it to steady the idle?
#7
02-28-2018, 09:21 AM
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#8
02-28-2018, 10:13 AM
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After seeing two mechanics here's where we are; cat removed, egr blocked off and the fuel pressure regulator vacuum hose is disconnected and plug with a screw. It runs great like this, no stalling. BUT! If I plug the vacuum hose back into the FPR while it's running, it stalls immediately. If I plug it in before starting the engine, then start it, idle will surge pretty hard, sometimes stalling and sometimes it will eventually even out. When it does stabilize, if I put it in gear it stalls instantly.
Right now I'm running it without the FPR vacuum hose attached. Not by choice but by necessity.
I hope my description makes it easier to diagnose because we're kinda at the end of our leash with this.
Thanks for your help.
#9
03-05-2018, 10:08 AM
