Question about 1986 Jaguar XJSC

1 Answer

Cant start my 89 v12 xjs

Runs rich when running, has fuel and spark but won't turn over even idle

Posted by on

1 Answer

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 4 Answers

Replace the crank sensor under engine. 90% of the problems is here.
Einar Norway

Posted on Dec 28, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

My 1991 XJS V12 has been sitting for 9 months low fuel, added fuel and tried starting, it turns over fine but does not fire, is there a way to check the fuel pump or if gas is getting to the engine?


first check for a spark thats more than likely ok. the most poss cause is the fuel pump. on the the fuel rail there is a pressure test point like a tire valve. connect a pressure test gauge and crank the engine you should get about 28 -36 psi if not the pump is more than likely stuck, try giving the fuel tank bang with your fist with someone cranking the engine remove spare wheel and trim board for access most likely the moisture in the remaining fuel has corroded the pump, good luck

Sep 16, 2016 | 1991 Jaguar XJS

4 Answers

Engine is only running on the left side


im sure the oxy sensor is because the right bank is not running first you need to see if you are getting spark on the right side,
what im thinking is if you have spark you have a cam that has jumped and you could do a compression test to check.
lets check spark first
later
paul

Sep 16, 2008 | 1993 Jaguar XJ6

1 Answer

89 S10 runs really rich. Can smell it in the truck.Lots of carbon blows out when starting also idle is rough but runs great at a faster speed.


if carby , float level is incorrect , power valve is faulty, fuel pressure too high
if efi controlled run fault codes and look for problem heated oxygen sensor/s , MAF/VAF sensors

Aug 16, 2016 | Chevrolet S 10 Cars & Trucks

1 Answer

Qhere do i find the coolant temp sensor an the map swnsor


Jaguar Sensor, XJ6, XJ8, XJS, XK8, S-TYPE, X-TYPE, XJ40 ...

www.jagbits.com/jaguarsensor.php
FITS: 1993-1994 6.0 XJ12 AND 1989-1993 V12 XJS FROM VIN 157118 ON, 1994-1996 6.0 V12 XJS FRONT DAMPER .... LNA1622AA - MAP SENSOR ... C42166-USED - USED SENSOR COOLANT TEMPERATURE FOR FUEL INJECTION

Sep 25, 2015 | Cars & Trucks

1 Answer

Why does idle speed surge?


Thread: 6.0 V12 XJS High RPM When Warm - Jaguar Forum.co.uk

www.jaguarforum.com/showthread.php?t=54266
Mar 3, 2013 - I recently bought a 1993 6.0 V12 XJS and when it is started from cold it runs ... to 1300 RPM so it wants to surge forward when braking which is strange. ...Classics ยท XJS 3.6,4.0,5.3 & 6.0; 6.0 V12 XJS High RPM When Warm ... You might want to adjust the aux (extra) air valve to bring the idle speed down.

Sep 25, 2015 | 1989 Jaguar XJS 5.3

1 Answer

Jaguar xjs 1995 v12 engine lack of power


I would start with a tune up, then isolate any symptoms other than lack of power if it persists, like rough idle, sputtering, jerking, engine trouble codes, etc.

Jul 30, 2014 | 1995 Jaguar XJS

1 Answer

I have 1985 jag xjs running rich.I replaced fuel injectors , fuel pressure regulator , and water temperature sensor . the car is running rich in idle black smoke coming out of exhaust and files out the...


You may not have all the things I list. these are things that will make an engine run rich. ECM, 02 sensors, map sensor, mass air flow sensor, vacuum leaks, throttle position sensor, Clogged air filter, Clogged catalitic converter. You have already replaced the injectors and the ECT , so that rules them out. Check for codes. Start with vacuum leaks. Hoses and the intake manifold gaskets. If you need more info let me know. Randy

May 09, 2011 | Jaguar XJS Cars & Trucks

1 Answer

89 dodge shadow. hard start. normal idle cold, fast idle warm. sometimes it wont start until i hear fuel pump activate.


Hello,
The car may be hard to start because it may need a normal tune-up. If the spark plugs are pretty used, they will slowly stop burning as much fuel because the spark slowly gets lesser and lesser. On a cold day the fuel is harder to ignite with a small amount of spark.
Normal idle when its cold means that your cars idle is probably too high. If you lower the idle, the choke on a cold day will keep the idle a little higher until the motor warms and then it will kick back off. If the idle is too high, it will run very rich, smothering itself with fuel, and causing the idle to stay low. When the car warms, its creating better spark when its warm, and with the idle being too high its running at a fast idle.
The car wont start sometimes can be the cause of a few things. If the ground is bad on the fuel pump, it wont make a good connection sometimes for when you turn the key on, the fuel pump dont pump the fuel to the engine. Another one can be that your accessory switch can be loose going to the fuel pump. I think its your ground though. Good luck! Hope this helps.
Have a nice day. -Steve

Dec 06, 2009 | 1989 Dodge Shadow

1 Answer

1989 jaguar xjs v12 fuel mixture


Chances are the coolant temperature sensor or its wiring have failed, or the vacuum line to the MAP sensor is leaky or broken (I believe the V12 in '89 guise uses MAP sensors). The MAP sensor measures Manifold Absolute Pressure. Along with this pressure the ECU looks at engine RPM. It also measures air temperature. Knowing pressure and temperature we know density, and knowing engine speed tells us how much volume of air is going through the engine. All of this together is computed into air mass and is used to calculate how much fuel mass should be admitted. If the vacuum line is broken, the ECU reads less vacuum and produces rich mixture thinking that the engine is under high load.

Aug 03, 2008 | 1986 Jaguar XJSC

1 Answer

1989 XJS V12 furl problem


Obviously, fuel and oil should never be in the same spot at the same time. You have a dead cylinder and maybe a stuck-open injector. The black smoke is from a too-rich fuel mix, so the cheap things to look for are in the fuel injection system. Look at the fuel pressure regulator as well. Good luck, and don't forget to relieve the fuel pressure before you do any work on fuel inj. engines!

Jul 28, 2008 | 1984 Jaguar XJ

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

352 people viewed this question

Ask a Question

Usually answered in minutes!

Top Jaguar Experts

Colin Stickland
Colin Stickland

Level 3 Expert

21927 Answers

Raygin
Raygin

Level 2 Expert

322 Answers

yadayada
yadayada

Level 3 Expert

60541 Answers

Are you a Jaguar Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...