Question about 2009 Renault Trafic 1.9dCi

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Traffic m9r looses all power at 4000 rpm

Fuel rail pressure at 90000 psi at idle have changed fuel rail no change

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I own a 1993 chev siverado.Im kinda confused as to why my truck will stall and loose all power to my ignition.


One guy I know traced it to his in-tank fuel pump. The computer reads that all of the electronic components of the pump are running at optimal, but a pressure gauge connected to the fuel rail on the intake showed the pressure was 58 psi at an idle and it dropped to 45@ 2000 rpm's. 58 psi is minimal for a big block, 60 is optimal. The book shows the small block should be around 50 to 55 psi for optimal pressure. The drop in fuel pressure causes the engine to lean out under a load such as accelerating and pulling and could cause the engine to burn a piston from the increased cylinder temp. I am not certain how this would cause ignition power loss though, unless that fuel pump has a safety cut out for electrical shorts, real or perceived by the computer.... Have to talk to some friends about that.

Feb 21, 2015 | Chevrolet Silverado Cars & Trucks

1 Answer

95 taurus starts runs for 1-2 seconds then dies changed fuel filter 39 psi on fuel rail can make it run longer by cycling ign.switch from off to run really fast but leave it in run and dies after couple...


I would check the EEC relay, and the fuel pump relay too. But it sounds like the ignition module is loosing power, or the pump is not getting power after the engine starts.
The computer must see oil pressure or RPM to power the pump relay after the engine starts.

Sep 07, 2012 | 1995 Ford Taurus

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2006 F250 Super Duty starts fine no lights or problem however recently it started to miss at idle and around 2000rpm. Oil changed this week and has proggressively gotten worse and now idle is very rough...


I'm not sure of engine liter size? How long since a tune-up? I always check for codes, even if lite isn't on. Some of the national brand auto stores will check codes for free, if there are any, just tell them your lite has been going on and off.
Use a gage and check proper fuel pressure. I can give you fuel pressure spec because I don't know liter size of engine? Some vehicles don't have Schrader valve on fuel rail, which makes checking fuel pressure a little awkward.
If you have electronic returnless fuel system, you have a fuel pressure sensor, hopefully on the fuel rail. The yellow wire should be for fuel pressure, engine idling, use digital multimeter on yellow wire. 3 volts = 43.75 psi. 2 volts about 20 psi less. 4 volts about 20 psi more, so you get the picture.
The basics for a rough idle, check for a leak of some kind, fuel--egr--vacuum leak.

Oct 30, 2017 | 2006 Ford F-250 Super Duty

1 Answer

Low oil pressure light is comeing 98xj8l jaguar


OIL PRESSURE SHOULD BE 70 PSI@4000 RPM 30 PSI AT IDLING. MAKE SURE OIL FILTER AND OIL BEEN CHANGED AND MAKE SURE OIL LEVEL NOT LOW.AND YOU USE THE RIGHT OIL.IF ALL IS GOOD OIL SENDING UNIT COULD BE BAD.

Nov 02, 2010 | Jaguar XJ8 Cars & Trucks

1 Answer

GMC Envoy 2002. When I get to traffic stop light. It will stall .. RPM is about 500 at idle. Doesn't do it when cold ( idle around 1000RPM. runs ok when driving just stalls when you get to stop sign or...


check your vaucumn hoses for leaks any leak in that system will effect your fuel pressure regulator and fuel rail that controls the running ability

Jan 14, 2010 | 2002 GMC Envoy

1 Answer

1996 Ford Taurus power hesitation


If you disconnected the Mass air flow sensor the car should have die out at idle. Check fuel pump pressure at the fuel rail should be 30 psi at idle. Low fuel pressure will cause your po 171, 172, problems which could cause the other to problems. You might be needing a fuel pump and filter.

Jun 24, 2009 | 1996 Ford Taurus

1 Answer

Oil pressure


At operating temp 171 - 181 F, with SAE 10w-30: idle @ 700 rpm 11 psi min, 1200 rpm 28 psi, 2000 rpm 43 psi, and 4000 rpm 57 psi.

Dec 16, 2008 | 1987 Nissan Maxima

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