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08-20-2007, 03:54 AM | #16 | |
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Join Date: May 2005
Location: Hobart, Indiana
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Re: 1500 3.9 Problems
Just to update on this. I ended up removing the engine from the van and found the timing chain was so wore that it was rubbing the side of the block and made a pretty deep goudge into it. As a matter of fact, when I went to remove the upper timing gear bolt, the gear was actually able to slip on the chain. Also had marks on the pistons where the valves had contacted them. I ended up putting a remanufactured longblock in and it starts every time now without a problem. Although, it is still having the chugging symptoms from time to time.
If I'd known the timing chain was the main problem in the first place, I would have probably just changed that. But with the valves hitting the pistons and things, I was better off to replace the whole engine. The van was in the shop for a while, but we were told the chain was in good shape....but apparently not. Thanks for the replies!! |
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08-20-2007, 07:29 AM | #17 | |
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Re: 1500 3.9 Problems
hi,
still having chugging problems-- remove fuel tank and clean it out, also change fuel filter. |
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08-29-2007, 07:55 AM | #18 | |
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Location: Lavonia, Georgia
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Re: 1500 3.9 Problems
Have your checked the catallitic converter. If the converter is contaminated or broken you can get backpressure that will upset the start mixture?
Have you had the codes checked. |
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02-04-2010, 09:59 PM | #19 | |
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Re: 1500 3.9 Problems
This is an old thread but I thought I'd post if it'll help someone out... I had the exact same problems described by the original poster but in my 1997 Chevy Astro 4.3 V6. Tried everything like the original poster but nothing fixed it permanently until I had the fuel injectors (called the "spider" assembly) and the fuel pressure regulator replaced. Hope that helps.
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