95 GMC Jimmy 4.3 Vortec

[grace05mam]

Since I bought my Jimmy I have replaced the water pump, thermoset, temp. sensor. It has not overheated since the waterpump was replaced but the temp still goes up to 240 and then goes right back down. what else could it be? and i think my cpi is bad too. we replaced the regulator and it still idles rough and smells of gas near the front of the jimmy. can anyone help?

[Chris Stewart]

After replacing the CPI regulator and/or fuel supply & return lines, turn the keyswitch on and check for leaks before installing the plenum top.

The high engine looks like there's still some air in the cooling system. Does the heater put out hot air consistantly.

[grace05mam]

Originally Posted by Chris Stewart

After replacing the CPI regulator and/or fuel supply & return lines, turn the keyswitch on and check for leaks before installing the plenum top.

The high engine looks like there's still some air in the cooling system. Does the heater put out hot air consistantly.

Single mom so I dont work on my Jimmy, my friend does. He works on his jeep but doesnt know much about Jimmys and I found this site and thought it might help us out. The heat stays hot once the engine warms up but when I'm driving I can here noise from the heatercore. There is no leaks inside and I'm not losing heat. I haven't replaced the cpi just the fuel regulator, trying to do a cheap fix before the big one.

[old_master]

The noise is probably an air pocket in the cooling system. This link tells how to remove it:

http://www.automotiveforums.com/vbul...d.php?t=469926

The fuel pressure regulator seldomly goes bad. The more likely culprit is the lines or "Nut Kit". The "how to" section at the beginning of the Blazer section also has some good threads telling/showing how to do it.

[Chris Stewart]

Here's the fuel info Old Master is refering to. The first 4 pictures apply as the Nut Kit lines crack & leak fuel in time. My '92 CPI unit is still in good shape but the regulator and "Nut Kit" lines have been replaced.

http://www.automotiveforums.com/vbul...d.php?t=473110

You likely need to replace your radiator cap to stop the gurgling noise since Eric doesn't recommend cleaning one up to sqeak by...lol

[grace05mam]

Thank you so much you guys. Would you happen to know what the actual name for the "nut kit" is called? the guys at autozone have no clue what I'm talking about.

[old_master]

Originally Posted by grace05mam

...the guys at autozone have no clue ...

That's what it's called, "Nut Kit". And it's available through the GM dealer.

[Chris Stewart]

The nut kit is also available at most chain type autoparts store now in the bright red HELP! section. If they don't have it in stock, usually only takes a day to get it...part number 55163

[grace05mam]

The brake hose on the passanger side is leaking and is dry-rotted, BAD. What is the easist way to get the old hose off without damaging the where the new hose will go one at?

[old_master]

Originally Posted by grace05mam

The brake hose on the passanger side is leaking and is dry-rotted, BAD. What is the easist way to get the old hose off without damaging the where the new hose will go one at?

A new challenge deserves a new thread. You can start one here: http://www.automotiveforums.com/vbul...wthread&f=2072