To help you when adding a technical question to this forum please make sure you give the following information:
Year of manufacture
Engine size
Engine code if applicable
left or right hand drive
transmission type: auto/manual
Fuel type: lpg/diesel/petrol
If a camper question then conversion type (manufacturer name) usually helps with queries
In the long run giving this type of information can save time and help you more!

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Here's the link to the 80-90 WIKI (on-line T25 Encyclopedia)
There is a good chance your question has been asked and answered before, have a quick search to see if you can find your answer there first before posting on here.
http://www.club80-90.co.uk/wiki/index.p ... =Main_Page