I have a 55 S-type. Last year the gearbox was changed under warranty. However, I find the new box is not as silky smooth as I would hope. When cold, there is usually hesitation in the low gears unless I accelerate hardish. Also, when warm and crawling up to a round about say, there can be some hesit...

Kels Thanks for the insights. I had guessed that if it was the AVV, it would have coughed & sputtered before stopping and not been so sudden. My mechanic also advises that the AVV is seized and he has restricted the air flow down that route When newly started and idling, it tries to drop out but usu...

I have been having a problem with my 78 XJS. It wants to cut out after a few minutes when started from warm. It starts fine but while driving along, especially when you take your foot off of the gas, it cuts out. It doesn't want to restart normally. However, it can usually be restarted by putting th...

Sirs I have just replaced the front springs and shocks on my 78 XJS and find the ride height is now some 2 inches higher than it should be. The guidance is for 6 inches clearance but it is now sitting at about 8 and there is a noticable slope front to back. There were some small shims on the springs...

The car is a 78.

The actual reading are:

R Bank 1.2% & 131 PPM
L bank 2.4% & 492 PPM

It is clear the L bank is outside of the 2% limit from the service manual and the HC content is a factor of 4 different between banks

Sirs My recent MOT has highlighted a significant difference in the CO content between the banks, even though they didn't need to do the test for the age of car. The Service Manual advises that tool 60730551 is required, I am assuming in conjunction with the emissions testing equipment. Is this tool ...

Thank you for such an excellent and prompt reply

Sirs One of my external vents on the rear quarter panal has developed an irritating internal rattle. I can find no guiance on how to access this component. I have recently replaced my headlining et al and this did not reveal any access or attachments from the inside. Any suggestions? Thanks Peter

Thansk for your help!!

Sirs

The illumination on my instrument panel on my 78 XJS is rather gloomy. The manual suggests that the bulbs are 2.2W. Can higher watt bulbs be used?

Thanks

Peter

I am considering renewing the thermostats when I renew the coolant but see that two temperature settings are available. What is the thinking here and which is appropriate for a 1978 XJS?

Thanks

My XJS has come fitted with 195/65/15 V rated but it looks like I need to replace the two on the front. I see that the manual specifiec 205/70 V R15. Q1 - Is having 195's a problem on safety or handling grounds that I should rectify? (I am not fussed about slight errors in the speedometer) Q2 - Shou...

Hi folks As a novice to all thinks motoring, could you please advise me on antifreeze for my 78 XJS. The manual specifies Bluecol U which I see is still available. Is using this brand important or will any reputable (i.e. not Tescos) be OK? Should I be looking for a product with certain qualities? T...

Thanks for your advice one and all.

Folks

I would like to replace the front seats in my 78 XJS with those from an 89 model. The rear and side panels have gone in no bother. However, the seat rails on the front are on a different spacing. Has anyone any experience to pass on to help my quest?

Peter