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-   -   idle problem (https://chevroletforum.com/forum/silverado-fullsize-pick-ups-21/idle-problem-33513/)

gotstylez June 9th, 2010 3:18 PM

idle problem
 
ok i have this problem now that when i start it up it idles high around 1000 rpm warmed up or not...it also bounces up and down from about 750 to 1000 rpm... didnt do this befor i did the eletric fans and seafoam...... anybody know whats wrong

maxxman04 June 9th, 2010 4:28 PM

dirty idle air control valve, dirty egr, dirty air filter, maybe vacuum leak

gotstylez June 9th, 2010 7:42 PM

i was thinking vaccuum leak too..bu i did unplug my egr when i was doin my fans to find out the senser was too small.so ill clean em n find out

MDTAHOE June 9th, 2010 8:04 PM

Is the factory coolant temp sensor still installed or did the fans come with a new one? Did you splice into the wires to the coolant temp sensor? Do you have a scan tool that shows data?

gotstylez June 9th, 2010 8:43 PM

factory temp sensor is still there. and i dont have a scan tool and i didnt splice into any wires. all i did was remove the fan and the shroud and put the eletric fans on there. and i just found a fuse that comes on when i turn the ign. on so the fans come on when the ign is on. the sensor that came with the fans is tool little

MDTAHOE June 9th, 2010 9:07 PM

It MAYBE keeping the engine too cool. Keeping it in open loop. Try disconnecting the fans. With out seeing data it will just be a guessing game.

gotstylez June 9th, 2010 9:47 PM

true..i never thought about that.. im going to re-wire them this weekend.. and im gonna try to find a hole in the firewall so i can just use a switch.. and i hope that willl fix the prob. if not you guys will hear from me again lol

gotstylez June 9th, 2010 10:14 PM

the weird thing is i just drove it.. it had good idle lol.. its weird becuaseit did the 1000 rpm idle for 2 days or so..and also i forgot to mention it had hard and high RPM shifts from 1-2 and 2-3..it stopped that too..

gotstylez June 10th, 2010 4:05 PM

well i got it scanned today from a buddy of mine i go mudding with hes a pro. mechanic. he says it could be a fuel relay or the fuel pump..does it sounds right to you?

gotstylez June 15th, 2010 9:46 PM

so just started today is that when i start it it runs like it has a big cam then idle sup to 1500 then it starts idleing like befor 1000 RPM or so.. AND on the way home a few mins ago it stalled out for no reason... any help?? i plan on taking the EGR off this weekend and trying to clean it.


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