How to adjust idle speed on Jaguar XJ6 SIII?

Everyone who tried to adjust the idle speed on a XJ6 SIII knows that it’s rather difficult to get at the adjuster screw because the air flow meter is in the way. If you take the air flow meter out, you can reach the adjuster but the engine doesn’t run, so no idle adjustment can be carried out.

Why does my Jaguar XJ6 not start up?

About half of the time, the reason why the Jaguar XJ6 will not start or quits running is because of the two main electrical problems that I described above. The other cause of the XJ6 not starting or quits running is the fuel system. Mostly, it is the fuel pump being killed by rust flakes from the two fuel tanks.

What kind of engine does a Jaguar XJ6 have?

Models covered Jaguar XJ6 models with 3.2 litre (3239 cc), 3.6 litre (3590 cc) & 4.0 litre (3980 cc) six-cylinder in-line dohc petrol engines and automatic transmission

Where is the transmission on a Jaguar XJ6?

Transmissions are a four-speed automatic equipped with a lock-up torque converter. The transmission is mounted to the back of the engine, and power is transmitted to the fully independent rear axle through a two-piece propshaft.

Models covered Jaguar XJ6 models with 3.2 litre (3239 cc), 3.6 litre (3590 cc) & 4.0 litre (3980 cc) six-cylinder in-line dohc petrol engines and automatic transmission

How old was my father when he bought a Jaguar XJ6?

I could not believe it when my father bought a 1983 XJ6L Vanden Plas in about 1992. I was about 23 years old, and a mechanical engineering student at the University of Florida.

What are the specs of a 1989 Jaguar XJ?

Specifications listing with the outside and inside dimensions, fuel economy, top speed, performance factory data and ProfessCars™ estimation: this Jaguar would accelerate 0-60 mph in 6.7 sec, 0-100 km/h in 7 sec, 0-200 km/h in 31.6 sec and quarter mile time is 15.3 sec. How much horsepower ? What engine size ? What dimensions ?

What kind of engine does a Jaguar XJ 3 have?

3) in 1989 the model with 2-door fastback coupe body and V-12 5343 cm3 / 326 cui engine size, 217 kW / 295 PS / 291 hp (DIN) of power, 430 Nm / 317 lb-ft of torque, 3-speed automatic powertrain offered since mid-year 1989 for Europe .

What kind of Revs does 1986 XJS V12 have?

We recently bought a 1986 XJS V12. When starting from cold the engine revs up and down between 400 and 1.600rpm. This continues until the engine has warmed up. Once hot, it starts every time without problem. I have flushed out the cooling system. fitted new thermostats and changed all twelve plugs.

What’s the best way to turn the XJRs?

On the XJRS it is best to turn the bush through 90 degrees, so that the line through the two holes in the bush runs at right angles to the length of the car as opposed to parallel as is normally the case.

What’s the idle speed on a David Marks car?

The engine normally ticks over at 900rpm even with the idle speed adjusting screw fully in on the auxiliary air valve. Incidentally the electric cooling fan comes on at the radiator when the dash fan switch is in any position but off, no matter what setting is used on the temperature control.

What should the idle speed be on a motorcycle?

And you will usually not be able to adjust the idle level in any way. Usually we see the idle speed being between 1000 and 1300 RPM (engine revolutions per minute) when the engine is at operating temperature, and often as bit higher during warm up.

How to troubleshoot an automotive engine high idle?

The troubleshooting procedure for high and low idle conditions are similar, which are included in the following: Step 1 – If the check engine or service engine light soon has illuminated retrieving the diagnostic trouble codes could lead you in the right direction of what the problem is, or is related too.

How can I keep my car at idle?

Step 3 – Engine vacuum is a sealed system and must hold a specific amount to maintain proper idle conditions, inspect the engine vacuum hoses and intake gaskets. Step 4 – The air intake boot or tube is used to deliver air to the intake system of the engine.

When to remove an idle air control valve?

Because of the nature of this valve (large air volume processed) it should be serviced when a tune up is performed to remove “coking” which will hinder the valve’s performance. To perform a rough check of the idle air control, remove the valve while reconnecting the wiring harness.

How can I check the idle air control?

To perform a rough check of the idle air control, remove the valve while reconnecting the wiring harness. While observing the valve with a flashlight, turn the key to the “ON” position, (DO NOT START ENGINE.) the valve should move slightly.

What kind of engine does an XJ-S have?

The 6 cylinder engines in the XJ-S were either the AJ6 in 3.6 or 4.0 forms or the four valve AJ16 version of the 4.0. All are powerful with over 300 bhp quite feasible. Available with either the 5 speed manual or the 4 speed ZF auto, again the auto can be modified for racing but the manual is a simpler option.

Where is the speed adjustment on a Jaguar?

It’s an aluminum casting with some hoses going hither and thither. The adjustment is made by turning the allen-head screw (5/16″ ?)which is located in the upper area of the block and a bit tricky to access (doesn’t matter if you’re blind or not—-it’s mostly done by feel).

How much does a V12 Jaguar XJ cost?

Although this one is almost perfect in every way – having been stripped back and restored after years of modifying and neglect – the £17,995 ($23,000) asking price is somewhat hard to swallow when given the drawbacks of early XJ-S ownership. We won’t kid you on, these 5.3-litre V12s do not suffer fools gladly.

What kind of engine does a Jaguar XJ cabriolet have?

The Jaguar XJ-SC Cabriolet had two engine size options, either the 3.6 litre straight-six or 5.3 litre V12 versions. The V12s were only available as Automatics, though the 3.6 were available with 5 speed Manual or Automatics Gearboxes.

How long has the Jaguar XJ been in production?

There were various models of the Jaguar XJS launched during the 21 years it was in production. In fact from 1975 to 4th April 1996 it underwent various transformations, including a complete facelift towards the final years. These days collectively these Jaguar cars are referred to by the generic XJS.

What kind of car was the last XJS?

I raced an auto with manual override and it was superb. The last XJS cars had the 6 litre V12 with a 4 speed 4L80E auto which can be modified to work in manual mode either mechanically or electrically (paddle shift style), but these cars are rather expensive.

Is there a problem with the XJS AJ16 engine?

I do have an high idle problem (1500rpm) with my AJ16 engine (in an XJS 1995 US spec). Prior the engine had so I… …. and now the engine idles smooth but to high at 1500 rpm.

What kind of allen key is idle speed adjuster?

The adjustment screw can be turned with a 7/32 allen key. My idea was to cut a piece of such an allen key, long enough that it protrudes the hole where the adjuster screw sits in (by 7mm approx). After removal of the air flow meter I glued it in place in the adjuster screw with a little epoxy (careful, do not lock the screw!).

How much horsepower does a 1989 Jaguar XJ6 have?

gasoline (petrol) engine with displacement: 2919 cm3 / 178.2 cui, advertised power: 110 kW / 148 hp / 150 PS ( DIN ), torque: 225 Nm / 166 lb-ft, more data: 1989 Jaguar XJ6 2.9 automatic catalyst (aut. 4) Horsepower/Torque Curve

When did the Jaguar XJ40 come out in Europe?

The following versions and sub-models of Jaguar XJ6 (XJ40) were available in 1989: 1989 Jaguar XJ6 2.9 automatic catalyst (aut. 4) specs Jaguar XJ6 2.9 automatic catalyst (aut. 4) , manufactured or sold in 1989, version for Europe (since mid-year 1989)

The local mechanic Donnie Taylor, had done several engine swaps, where he replaced the Jaguar engine with either a Chevrolet Monte Carlo engine, or a Corvette engine. My father told the mechanic Donnie Taylor, to look for a good used Jaguar XJ6 for sale, to go and perform an inspection, and to bring it back if it was a good car.

What was the original price of a Jaguar XJ6?

I looked through the paper work in the glove compartment, the initial purchase price was $19,000 in 1978. I believe that Donnie Taylor got this car for $6,500 to $8,000, which is tremendous depreciation in four years.

What kind of transmission does a Jaguar XJ6 have?

Jaguar XJ6 Service and Repair Manual 3261 Jaguar XJ6 Models covered Jaguar XJ6 models with 3.2 litre (3239 cc), 3.6 litre (3590 cc) & 4.0 litre (3980 cc) six-cylinder in-line dohc petrol engines and automatic transmission

Which is worse a Jaguar XJ6 or XJ12?

Beginning in the 1970s, frustrated owners started fitting Chevrolet V-8s into the worst XJ6 sedans, although they are a poor substitute. The wiring harness must be modified, sending units swapped to make gauges work, and legal smog gear fitted in California. Plus V-8s vibrate worse than straight-sixes, and nobody trusts a mongrel.

When did the Jaguar XJ6 6 cylinder come out?

Introduced in late 1968, it combined refinement, luxury, 120-mph performance, and superb handling. The signature 4.2-liter DOHC six-cylinder delivered 180 horsepower, along with four-wheel independent suspension, power rack-and-pinion steering, power disc brakes all round, and an automatic transmission.

How to remove the intake duct from a Jaguar?

Remove the intake duct. With assistance, visually observe throttle butterfly operation as the ignition is switched ‘ON’ for the first time. Throttle butterfly should fully close, then immediately open to the idle position. Did butterfly stick closed? Switch ignition ‘OFF’. Lightly press throttle butterfly with finger to the fully closed position.

Are there any problems with the Jaguar XJS?

In fact, there are other problems, more generalized than the ones discussed which affect the XJS performance. In this second section we will discuss these general issues and how they can be addressed. Because of the nature of the XJS body, it is prone to rust and rot on and inside various components.

What to do about water leak in Jaguar XJS?

Mild contamination can be rubbed down and painted over with a fresh coat of paint. More serious rust or rote will require that sections be cut off and effectively replaced. Water leaks and oil leaks are popular with these vehicles. Water leaks for example are as a result of blockage within the air conditioning drain.

What does the auxiliary air valve do on a Jaguar?

The Auxiliary Air Valve (AAV) serves the same purpose on the Jaguar V12 with EFI that a high idle cam serves on an engine with a carburetor: it raises the idle so the engine won’t stall when cold. It consists of a thermal bulb, outwardly similar to the bulbs found in thermostats, that pushes a piston up a cylinder against a spring.

What causes a car to idle rough at idle?

A clogged fuel filter stops the engine from receiving the right amount of fuel causing the engine to be rough idle. Fuel filters are often pretty cheap, and you can easily get the fuel filter removed and replaced from a nearby mechanic or do it yourself if you have some knowledge. 6. Dirty Air Filter

What are the problems with the Jaguar XJ6?

The gauges were high quality and craftsmanship Smiths gauges. Wealthy people bought the Jaguar XJ6, knowing that these cars had a reputation for breaking down frequently. You had to be wealthy to buy one new, not just because of the initial purchase price, but also because of the constant costly repairs.

When did the Jaguar XJ6 start and run?

I now want to tell everyone how to make the Jaguar XJ6 manufactured from the early 1970s through the early 1980s start and run. I had previously not wanted to tell very many people, so that the price of these cars would continue to stay very low, and I would be able to buy many more of them, hoard them for myself, and save them.

Is the 1996 Jaguar XJS a good car?

The 1996 XJS model is popular among many Jag lovers, with great scores in terms of comfort, value for money, design, performance with minimal comfort issues from taller users. Rave reviews aside, the 1996 model is not perfect. Apart from a high maintenance cost, there are several aspects to this model that are amiss.

Why is my Jaguar XJS not filling up?

According to the bulletins, the only solution should be delivered by the car dealer and it is to reroute the vehicles piping to release overstressed conditions that cause the hose joint to break and allow out fuel.

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