Taxi Driver Online

My tx1 steering has suddenly gone heavy. the power steering works then seems to go "lumpy" works OK then feels stiff. But once I gave done 5-6 miles the steering seems to work OK again until it's cooled down overnight, then it starts all over again the next morning. My initial thoughts was steering box? What do you think?

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Wanna be cab driver, it's my daily commute

check your belts are tight,slack belts can cause this,
ever noticed how heavy your steering gets when you go through a puddle?
thats because the belts are slipping
same effect when your belts are too slack,hope its that rather than a duff box,
check your power steering fluid too,it should be a bright cherry pink colour,if its not change your power steering fluid,remembering to bleed the system afterwards

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i started out with nothing and ive still got most of it left