Question about 2000 Jaguar S-Type

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FAIL SAFE ENGINE MODE

I replaced the engine in my 2001 s type Jag. I've checked all my wires are connected and replaced the crank sensor i got spark and fuel pressure. im lost now the only thing i can think of doing now is flashing the ECM.Any suggestions?

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  • daddy 0 Dec 01, 2008

    I have a 2000 Jaguar S type the fail safe engine lights flashes on then off then doesnt flash at all. what could be the problem

  • tony yeatman
    tony yeatman May 11, 2010

    Do you have an injector pulse and how did you check

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  • Jaguar Master
  • 21,990 Answers

Dealer only to reset the ECU ,try disconnecting the battery and joining the terminals together for 30 secs .if this doesnt work then dealer only to reset it all as car thinks its been nicked

Posted on Nov 27, 2008

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1 Answer

How do i fix a fail safe mode in a s type jaguar


great question, but engine failsafe or transmission?>
no year stated, and is very key to answers,
the PCM runs the engine, and if any sensor fails.
the PCM Sees that (called catastrophic monitors) and instead of
dying like a race car does (like this) the factory PCM is smarter than the average bear.
it MIMIC's the dead sensor from about 1985 to now. most cars, in USA. called OBD . "simulates it"
the ECu then logs ERRORS called DTCs ,you scan the PCM(or ECU) and it shows, say , dead CMP (crank sensor) "wild guess"

one example is a dead MAF, (or MAP) the simulation is very very crude, and engine will misfire and foul spark plugs with carbon.
this is very common, and worse prior to 1996 , in USA.

so the CEL lamp glow running, that means Scan ME.

Not starting is another matter,
good compression on all cylinders
good spark on all spark plugs, (not black tips (look)
good fueling, of the above 2 are good, all cars run with test fuel now for about 3 seconds, long each spray.

the fuel tank can be missing and i can keep the engine running for 5 minutes or longer, with my bottle of spray fuel.
proving , you have fueling problem
(low fuel pressure or too much)
ill not do fueling as that is 3 pages long "injector tests"

Jan 08, 2015 | 2005 Jaguar S-Type

1 Answer

I have a read screen on my 2001 Jaguar S- Type that says " Fail Safe Engine Mode. What does it mean


Hi, fail safe engine mode means that the ECM (Electronic control module) or computer box as some know it, is running in a mode whereby it is bypassing a particular component in the engine that has gone faulty in order to keep the car from cutting out, or has picked up an erratic function in any component, which is more than likely an electrical problem and could be one of the following which have to be checked by computer analysis equipment at the Jaguar agents or any one else that is familiar with the process that is required to trace the fault. Here are the possible causes: 1.Erratic wire connection 2, Engine cooling Fan thermal switch. 3. Control module 4. CKP sensor 5. Computer box not functioning correctly (a rare fault) 6.Engine coolant fan not working, or running erratically. Unfortunately only a computer analyis will depict the location of the fault and if the repair man is very experienced will be able to sort it out quickly with the computer analysis.( Although I strongly suspect it to be the cooling fan thermal switch which is working erratically and will soon fail completely.)
So get your car to the experts as soon as possible especially if it could be the cooling fan thermal switch, which could cost you a major expensive engine repair job if your Jaguar overheats.
Have a good day.

Oct 02, 2014 | 2001 Jaguar S-Type

1 Answer

2001 Ford Escape starting problems


check for spark at the plug lead while cranking engine

Feb 11, 2013 | Ford Escape Cars & Trucks

1 Answer

No spark


Yes. No crank sensor signal usually means no spark. The ecu has to receive crank position to set spark timing. I think you've really hit a big problem. You may need to get in touch with some people who have done this mod. I've always heard it's best and easiest to swap the engine with its ecu and the wiring harness into another car. Or something more compatible with that jdm engine.

Jul 27, 2012 | Honda Civic Coupe

1 Answer

I have a 2001 VOLVO S80 2.9 Very slow pick up and engine vibrates


is the transmission slipping?electronic controlled transmissions go into fail safe mode starting out in a higher gear

Apr 27, 2012 | Cars & Trucks

2 Answers

Problem code for JAGUAR s-type 2001------ P1576


change the pedal sensor...thrttle is fine and will function properly as soon as its changed..make sure once you change it you turn the key to position two for 5 seconds then turn it back to position one ,then wait ten more seconds and turn the key to postion two for 5 seconds again to allow the ecu to calibrate.And make sure you unplug the neg terminal to do the install...once reconnected follow the above procedure...the crank the car.

Aug 24, 2011 | 2001 Jaguar S-Type

1 Answer

I have a mitsubishi colt, and it has problems starting in the mornings. It turns over, but wont start, when I eventually get it started its very lumpy, and when I push the accellerator the engine almost...


There is no simple answer, there are to many variables. If you have access to a scan tool, pulling the codes should help. Without them its back to old school hunt and peck method. At this point we need to narrow down the problem. You need to test for spark.
  1. Tag and disconnect the spark plug wires from the spark plugs.
  2. Remove the spark plugs and install the spark plug wires to each spark plug.
  3. Ground (do not hold spark plug) the spark plug; check if spark occurs while engine is being cranked.
Crank the engine for no more than 2 seconds at a time to prevent flooding the engine with gasoline.
If you have spark, You will want to make sure you have fuel injector pulse, along with fuel pressure. If you have spark ..simply spray some starting fluid in through the air filter and hold the gas pedal to the floor and crank it over while spraying. If it fires up, you know it is fuel related( fuel pump, regulator, or ECM if no injector pulse) . If you have no spark then look at ignition coil connection and trace through to the distributor( if equipped ). The crank shaft sensor has a tendency to fail on these as well. This should give you a few things to test and check to start you on your way to narrowing it down. If you have no spark then look at ignition coil connection for power and trace through to the distributor( if equipped ). If it is DIS( no distributor). It may be the Crank sensor or the ECU. The crank shaft sensor has a tendency to fail on these as well.
The ECU uses the signal sent from the Crank sensor to trigger the spark and fuel injectors. ( make certain you have checked all fuses)

Apr 06, 2011 | 2006 Mitsubishi Colt

1 Answer

The engine indicator on the dash wont stay lit before the start of the car, the engine turnsover but doesnt start


There is no simple answer, there are to many variables. If you have access to a scan tool, pulling the codes should help. Without them its back to old school hunt and peck method. At this point we need to narrow down the problem. You need to test for spark.
  1. Tag and disconnect the spark plug wires from the spark plugs.
  2. Remove the spark plugs and install the spark plug wires to each spark plug.
  3. Ground (do not hold spark plug) the spark plug; check if spark occurs while engine is being cranked.
Crank the engine for no more than 2 seconds at a time to prevent flooding the engine with gasoline.
If you have spark, You will want to make sure you have fuel injector pulse, along with fuel pressure. If you have spark ..simply spray some starting fluid in through the air filter and hold the gas pedal to the floor and crank it over while spraying. If it fires up, you know it is fuel related( fuel pump, regulator, or ECM if no injector pulse) . If you have no spark then look at ignition coil connection and trace through to the distributor( if equipped ). The crank shaft sensor has a tendency to fail on these as well. This should give you a few things to test and check to start you on your way to narrowing it down. If you have no spark then look at ignition coil connection for power and trace through to the distributor( if equipped ). If it is DIS( no distributor). It may be the Crank sensor or the ECU. The crank shaft sensor has a tendency to fail on these as well.
The ECU uses the signal sent from the Crank sensor to trigger the spark and fuel injectors. ( make certain you have checked all fuses)

Nov 14, 2010 | 2002 Mitsubishi Lancer

1 Answer

Warning: fail safe engine mode


I do not know about a Jag. But the "fail safe engine mode " on my GMC means the Engine Controll Computer has quit working.

Jul 09, 2009 | 2001 Jaguar XJ8

2 Answers

2001 Hyundai Sonata Bogs down


My Son's 01 Sonata displayed the exact same systems and it was his catalytic converter. The metallic sounds were the converter guts disintegrating.

Mar 09, 2009 | 2001 Hyundai Sonata

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