Help with idle

[tallcoolone]

For 6 months I have idle speed error/never idles right/ new O2 sensor, Iacv, replaced vacuum lines/ now says high MAF-MAP? idles high(2ooo plus) in park, when in drive installs immediately with drop in idle...what do I need to replace at this point...thanks for any help, George

 

[NecroWolf]

Re: Help with idle

try an iac yet?

 

[QUICK STORM]

Re: Help with idle

i believe he already has

 

[NecroWolf]

Re: Help with idle

sounds almost like a vacum problem

 

[QUICK STORM]

Re: Help with idle

maybe you put in the vacuum lines on the MAP on backwards

 

[mrweelr]

Re: Help with idle

I'd swap the IAC again and check all the vacuum hoses for proper routing, including the check valves. If you find another Sy/Ty in your area, you could do a comparison of all the lines. Also may want to verify mechanical timing with a piston stop and ignition timing at the distributor. My idle was at 2000+ when I first put my truck back together a few months ago. Replaced the IAC and it solved the problem immediately. I guess the old one didn't like being cleaned.