I've enjoyed reading through these forums and many of you on here have already been an invaluable resource as I embark on my LJ78 journey - thank you! I recently picked up a '91 LJ78 with the 2L-TE and have been working towards implementing some of the mods many of you have kindly documented and discussed.
I'm in Iowa (US) - it has been a warm winter, but it's still cold-ish here - 20's, 30's, sometimes 40's (deg F). I did the EGR delete about a week ago(early February) and all was seemingly well until this morning. I have a coolant leak somewhere near the throttle body. A bit of history, then my questions:
EGR delete, block off plates, etc all seemed to go well. I did drill out the large butterfly plate and removed the smaller one, as well. Throttle body was fully off the vehicle when I did it. The lower TB gasket was in poor shape/crumbling, so I cleaned the lower throttle body gasket off as well as I could and cut a new fel-pro gasket (paper type). I coated all mating surfaces (including both sides of paper gasket) with a thin layer of super high tack gasket sealant, let it set up a few minutes to a light tack per instructions, and fit things back together. The upper gasket looked to be in OK shape minus one little piece that had chipped off near TB stud/bolt, so I decided to reuse that gasket. I coated mating surfaces with gasket sealant and also did a layer of ultra copper high temp gasket maker (700 deg F kind) since that little piece was chipped off - thinking it would fill the recess. I let all gaskets set up for 24 hours in heated garage space (was 55+ deg F in there over night) before starting the vehicle. All seemed good/sealed and I've been driving it for short trips for the past 5 days without issue.
For the two coolant lines that come into TB - I did notice one of the hoses was a bit checked/flared out at end of hose (you can see in photos). I don't have extra hoses/hose material, so I decided to just attach it and put the old clamp back on.
When I start it up and manually rev with my hand on throttle cable/plate, I can't see where coolant is leaking from - it doesn't appear to be spewing out, at least not when sitting in parking lot with a warm engine. Coolant has sprayed around / up onto fuel filter, though, so it's clearly spraying some when driving.
My questions:
I'm in Iowa (US) - it has been a warm winter, but it's still cold-ish here - 20's, 30's, sometimes 40's (deg F). I did the EGR delete about a week ago(early February) and all was seemingly well until this morning. I have a coolant leak somewhere near the throttle body. A bit of history, then my questions:
EGR delete, block off plates, etc all seemed to go well. I did drill out the large butterfly plate and removed the smaller one, as well. Throttle body was fully off the vehicle when I did it. The lower TB gasket was in poor shape/crumbling, so I cleaned the lower throttle body gasket off as well as I could and cut a new fel-pro gasket (paper type). I coated all mating surfaces (including both sides of paper gasket) with a thin layer of super high tack gasket sealant, let it set up a few minutes to a light tack per instructions, and fit things back together. The upper gasket looked to be in OK shape minus one little piece that had chipped off near TB stud/bolt, so I decided to reuse that gasket. I coated mating surfaces with gasket sealant and also did a layer of ultra copper high temp gasket maker (700 deg F kind) since that little piece was chipped off - thinking it would fill the recess. I let all gaskets set up for 24 hours in heated garage space (was 55+ deg F in there over night) before starting the vehicle. All seemed good/sealed and I've been driving it for short trips for the past 5 days without issue.
For the two coolant lines that come into TB - I did notice one of the hoses was a bit checked/flared out at end of hose (you can see in photos). I don't have extra hoses/hose material, so I decided to just attach it and put the old clamp back on.
When I start it up and manually rev with my hand on throttle cable/plate, I can't see where coolant is leaking from - it doesn't appear to be spewing out, at least not when sitting in parking lot with a warm engine. Coolant has sprayed around / up onto fuel filter, though, so it's clearly spraying some when driving.
My questions:
- Have any of you experienced this?
- What do you think chances are that leak is coming from hose(s) that go into throttle body? I will try to put a stronger clamp on later, maybe trim flared end of hose and see if that fixes.
- Is there a chance that leak could be coming from the throttle body gaskets that I made / patched up? Can't tell if coolant I see there has sprayed up from hose, or if it is seeping from TB between gaskets.
- Any risk of damage to engine with coolant leak at this location? Want to get fixed as soon as possible, but may need to drive car away from office to parts store...back home, a couple miles city driving. Could I temporarily pull hoses from TB and block off and limp it around from work to store to home... until I get it fixed?
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