Mine definitely goes into the water jacket. When I swapped sensors, coolant spilled out.
CK5
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Frustrating 5.7L TBI problem(s)
- Thread starter colbystephens
- Start date
Mine definitely goes into the water jacket. When I swapped sensors, coolant spilled out.
Do you have it screwed into the block drain plug? Should not have coolant behind it.
The bouncing timing may be the used up distributor. Seen it. I have had really good luck with the RPT brand of new distributor. Same price as rebuilt but everything, including the housing in new.
http://www.oreillyauto.com/site/c/d..._distributor_5003186_3666&keyword=distributor
The bouncing timing may be the used up distributor. Seen it. I have had really good luck with the RPT brand of new distributor. Same price as rebuilt but everything, including the housing in new.
http://www.oreillyauto.com/site/c/d..._distributor_5003186_3666&keyword=distributor
Have you looked into a new O2 sensor? If it is not heating up and responding at idle, that could be a problem as well. Once the motor heats up it goes into closed loop and runs better.
On my 350 TBI coolant comes out when you remove the knock sensor. Not sure what engines have the dry port.
I put it in exactly the same location as it was in my stock engine. Thanks for the info on the dizzy.
The O2 sensor is new. Is there a way to check it, in case I have one that's not so good?
Good to know I'm not the only one! I was beginning to think I was crazy!
Another easy check is the IAC. If you haven't looked at it lately, remove it and see if the pintle is loose or out of position. My K5 would get an up and down idle, then go away. Set a code 43. Ended up being the knock sensor and bad connector for the code 43. For the up and down idle, I was checking all wiring connections at the throttle body, and when I pushed on the IAC connector wires I could feel the IAC vibrating. I removed it and as I was getting ready to examine it the damn spring and pintle shot out. The spring went into one of the throttle body ports, and the pintle ended up on the axle next to the power steering gear box. After I replaced the IAC it helped tone down the rich mixture smell and no more bad idle. You can check the IAC in about 5 minutes.
Pardon my noob status, but what's the IAC? Sounds promising.
Idle Air Control
This is all great stuff, guys! Thanks. I'm learning a ton right now.
Do not power the iac up without it in the throttle body it does a limits check and it will blow itself apart..
The Oreily distributor looks just like the one I got at Autozone. Not sure if they're the same but it's lifetime warranty as well. You might consider getting an aldl adapter and plugging into a laptop to see what the ecu is doing. It will tell you all kinds of stuff, how rich the engine is running, any error codes etc.
The Oreily distributor looks just like the one I got at Autozone. Not sure if they're the same but it's lifetime warranty as well. You might consider getting an aldl adapter and plugging into a laptop to see what the ecu is doing. It will tell you all kinds of stuff, how rich the engine is running, any error codes etc.
The IAC is located on the passenger side of the throttle body towards the firewall.
Depending on setup the connection should be
but also could be this type connector
The IAC controls the idle speed of the engine.
There is a write up on how to set your idling with the IAC and TPS. Post 15
https://ck5.com/forums/threads/new-member-i-finally-got-a-k5-now-with-pics.286303/
Depending on setup the connection should be
but also could be this type connector
The IAC controls the idle speed of the engine.
There is a write up on how to set your idling with the IAC and TPS. Post 15
https://ck5.com/forums/threads/new-member-i-finally-got-a-k5-now-with-pics.286303/
THIS.........I forgot to specify. Unplug, remove then inspect. Do not plug it in and check it while it is not installed. There is a measurement check for the pintle. It should be 1 1/8" from base, where gasket sits, to end of pintle. Any longer and it could shove it into the wall of the throttle body and damage the IAC. Any shorter and it won't close completely. If you need to adjust it pull the spring down towards the IAC and screw the pintle clockwise to shorten or counterclockwise to lengthen.
Aldl allows you to check iac stepper count to be sure you are not above or below the threshold, if you are above you need to add some air via what most call the idle adjustment which is actually the minimum air adjustment for a tbi engine. The iac is what helps dial in the requested idle speed.
black dawg
1/2 ton status
IAC controls idle speed, is everything working correctly idle wise? The IAC on its own cant make the engine very rich, without some kind of idle issue. The ecm varies pulse width based on commanded IAC counts, so If it was stuck close to shut, and the ecm was commanding very high IAC count, and the higher pulse width that would be needed for that, the idle could be pretty rich. But, it would also be idling low and crappy.
your tbi problems must have worn off on me. I spent all weekend working on mine.. Dammit!
Bummer!
