Evap Canister Problems?
#1
Junior Member
Thread Starter
Evap Canister Problems?
Ok so i have a 92, z28, 305, manual. I recently bought this car and was doing a tune up when i noticed a vacuum line from the throttle body to the Evap canister was not hooked up. I thought it just slid loose, ill put it back on and tighten it down with a zip tie. Now my car wont start. I unhook the line and it fires right up. If i leave it unhooked and plug it with my thumb or put it on the canister while the engine is running it dies out immediately. The line is not clogged, and i can suck through but not blow through the line going back to the fuel tank. If i hook power and ground to the plug on the canister i hear the solenoid click and i can blow through it. I used a test light across the plug (key on/engine off) and there was nothing. If i hooked from the power wire to a chassis ground it has fire. So do i have a bad ground wire to the plug or does the ecm only ground that when it sees fit?
#2
Senior Member
Join Date: Apr 2007
Location: wallingford,ct
Posts: 668
Likes: 0
Received 0 Likes
on
0 Posts
Car: 91 formula ws6
Engine: 355 tpi OBDII
Transmission: 4l60E
Axle/Gears: 2.73 with 4th gen brakes
Re: Evap Canister Problems?
only grounds it when needed. it runs unhooked you say? meaning a vacuum leak? thats the way i read it. inform if not, but if i read it right then reset your min idle air setting. good article on here that explains how to do it. it sounds as tho the solenoid is working correctly tho.
#3
Junior Member
Thread Starter
Re: Evap Canister Problems?
And yes you read it correctly. There is a vacuum leak, and if i plug the leak it kills the engine. Thats what made no sense to me, usually if you have a vacuum leak the engine wont idle rite, but mine seems fine, and normally you plug the leak and the engine will idle properly this one just shuts off. I dont get it.
#4
Junior Member
Thread Starter
Re: Evap Canister Problems?
OK I have another question. Is the 92 TPI a self learning IAC? If I unhook the battery for a while and then hook up the vacuum line and then let the IAC relearn its settings. Would that possible work???
#5
Senior Member
Join Date: Apr 2007
Location: wallingford,ct
Posts: 668
Likes: 0
Received 0 Likes
on
0 Posts
Car: 91 formula ws6
Engine: 355 tpi OBDII
Transmission: 4l60E
Axle/Gears: 2.73 with 4th gen brakes
Re: Evap Canister Problems?
read the minimum idle setting procedure. itll explain it all.
Thread
Thread Starter
Forum
Replies
Last Post