Misfiring

[Fugly]

Hi Guys

i seem to have a problem with my ignition/lumpy running at about 45mph in top gear i get the sensation of misfiring at about this speed, dont get it at the same rev range in any other gear. it is a series 1, 1991 with only 120k on the clock ( verified by service log book) any ideas please

many thanks

bob

[Bison]

may be something to do with the throttle position sensor, you are at low revs at this speed (may need accelerator cable adjustment) pretty sure it's one of these things. As my 93 did it until me Lex mechanic gave it a good going over. they were some of the things he adjusted, seemed to work.

Bison :zee:

[davepruce]

I sorted the exact same prob on my '94 by replacing plugs and leads.

Original spec plugs from www.sparkplugs.co.uk and leads from anywhere but Lexus!!