# Blazin' Blazer **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** chevrolet, blazer\ **Created:** [April 8, 2011, 7:39pm UTC](https://community.cartalk.com/t/blazin-blazer/63491 "2011-04-08T19:39:25Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![hereshowe](https://avatars.discourse-cdn.com/v4/letter/h/b487fb/32.png) [@hereshowe](https://community.cartalk.com/u/hereshowe)\ **Post date:** [April 8, 2011, 7:39pm UTC](https://community.cartalk.com/t/blazin-blazer/63491/1 "2011-04-08T19:39:25Z")
My Blazer wants to go fast…whenever it chooses. The idle will bump up to 2500-3500 whenever it wants. The local shop put it on the magic computer and the tech said the computer is sending a command to the idle air controller to boost it up but he said there are so many inputs to the computer it could be any of them. 4 hours and he gave up. Additional info -putting in clutch and pressing brake just hard enough to light up brake lights but not slow car will bring idle back to normal after 2 seconds. -It’s really fun on the ice!!! -Air on or off no difference. -Does when cold or hot engine (temp runs just under middle of scale when warm) -Seems to have started when they replaced the radiator -Cold outside air temp may make it a little more common but it does when 100 degrees too. -Cleaned throttle body and replaced idle air controller twice, no help. -Think Blazer down deep wishes it was a Ferrari. ---
**Author:** ![hereshowe](https://avatars.discourse-cdn.com/v4/letter/h/b487fb/32.png) [@hereshowe](https://community.cartalk.com/u/hereshowe)\ **Post date:** [April 8, 2011, 7:43pm UTC](https://community.cartalk.com/t/blazin-blazer/63491/2 "2011-04-08T19:43:49Z")
Me again…forgot to say Blazer is 1999 V6 4.3 Liter 5 Speed When it revs will sometimes stay at high RPM or will fluctuate between 2500 and 3500, up and down, back and forth. Not consistent. Thanks!