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Chevy Venture Engine Issues

21 messages,  Last post on Nov 18, 2009 at 6:38 AM

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#1 of 21 coolant not warming up to right temp by dzack4 Dec 10, 2006 (6:12 am)
hi i have a 97 venture and for the last 2 weeks i have been trying to get the antifrezze temp up to bar when i drive it but its not warming up. it will only warm up when it sitts ther on idol. i have changed antifrezze and theromstate and it still didn't help if any one else has any ideas it would be a big help. thanks
#2 of 21 coolant not warming up by dzack4 Dec 10, 2006 (6:15 am)
hi i have a 97 venture and the temp is not warming up when you drive it. it will only warm up on an idol. i have changed antifrezze and thermostate. if any body else has any ideas it would be a big help .thanks Replies to this message: ronsmith38 (Dec 11, 2006 6:16 am)
#3 of 21 Re: coolant not warming up [dzack4] by ronsmith38 Dec 11, 2006 (6:16 am)
Replying to: dzack4 (Dec 10, 2006 6:15 am) Is this a new condition? These GM vans are notorious for slow temp warm ups. They may take from 10 to 20 minutes to warm up.
#4 of 21 coolant not warming up by dzack4 Dec 14, 2006 (2:53 am)
i could drive the van for 2 hrs and it never getts warmed up to open the theromstate not even close to the temp. thank you
#5 of 21 01 venture temp by bill6950 Feb 03, 2007 (5:06 pm)
can anyone tell me the normal temp operating rangefor venture(1/4-1/2-3/4)when sitting in 25 degree temps.mine goes up to 3/4.afraid high temp may cause engine trouble.have had to add coolant at times and smell coolant from under hood.thanks for any help i can get
#6 of 21 Misfiring? by starwood128 Feb 24, 2007 (7:31 am)
Have a 98 Venture. 98000 miles...I have multiple misfirings, under acceleration, seems to stop on coast. They feel like rapid 'hits', and shakes the whole vehicle; vibrations are throughout the vehicle. No codes thrown or showing. Does this sound like and injector-related problem? Replies to this message: 1969chevelless (Sep 15, 2009 8:32 am)
#7 of 21 Head gasket and rattles - A long story by rattles Mar 06, 2007 (6:17 pm)
Hi, I am a fully qualified mechanic with 20 years plus experience, my chevvy venture van (160k) ran great and had no noises/rattles or issues. i am having no success in curing a severe top end rattle. If youre sitting comfortably , i'll begin. My wife was driving along and said the van lost power, then it picked up ok, then a bang and lots of smoke. she stopped and we had the vehicle towed home. When i tried to start vehicle for diagnostic purposes, it ran poorly and had a regular top end rattle, like a very loose lifter. After usual diagnostic tests i decided to remove the cylinder heads. The rear gasket was completely shot at #6 cylinder and i noticed #1 chamber was extremely clean, indicative of it leaking also. The sump was filled with coolant. I fitted an aftermarket head set ($270+tax) and refitted heads, new oil and filter etc. When i started her up she ran sweet, no misfire but a nasty rattle(same as before). After little success finding origin of noise i removed inlet manifold and double checked my work. No loose lifters, pushrods in correct place, etc etc. Was told it could be lifters damaged after dexcool entered sump, replaced all lifters($24+tax each), rebuilt and had exactly the same noise. Sent van to local garage to check over. He removed inlet manifold, compared my heads etc to a venture he had in for head gasket repair. He checked oil pressure, rockers etc found nothing, charged me $250 + tax and returned van without refitting any parts. Suggested the aftermarket gaskets may be thicker and i might try having heads shaved. Had the heads shaved and fitted new gm gaskets ($270 Heads + $160 for gm gaskets and of course taxes). Fitted heads again! (yes with another set of bolts). Guess what - still have the same rattle. still sounds like atleast 2 valve clearances are 40 thou too big. The van runs great. have even driven it up the road for a few k. lots of power, no misfires, rattle is audible whilst driving. Any one still awake after reading this and has any suggestions please feel free to respond. Replies to this message: spike99 (Mar 22, 2007 7:40 pm)
#8 of 21 Re: Head gasket and rattles - A long story [rattles] by spike99 Mar 22, 2007 (7:40 pm)
Replying to: rattles (Mar 06, 2007 6:17 pm) Sounds like you got the head gasket problem resolved. You are very luckey you can do all your own work and order many of the parts "at discount" prices.   For your "audible whilst driving" noise, the sound might be coming from 2 different areas. The one area to check is its front wheel bearings. If wheel bearings are going, the front end while hum - while driving. The faster one drives, the louder the hum is. In some vehicles, sound travels under the vehicle and echos between its body and ground. Thus, the sound may "sound like" its coming from the engine area but it might be coming from under the engine. Being a Mechanic, I'm sure you know how to check for worn out wheel bearings.   The other area to check for "audible whilst driving" sound is the AC clutch. My previous 2000 Sunfire had a weird humming sound under its hood. Sometimes it would squeek and sometimes it would hum. Most of the time, it would hum. My local mechanic used a doctor's stephoscope (no kidding) and placed its sound pickup end of every engine part. Really cool to watch because he would say, "nope - not the water pump", "nope - not the idler pully", etc. etc. as he put the sound pickup end on every steel engine part. Finally, he nailed it. Found it was the bearings (steel sleeve) on the AC clutch assumbly that was gone.   If you can, try to use a doctor's stephoscope to hear that "sound under the hood" as well. Especially if you can hear the "audible whilst driving" sound while its tires are turning - while the vehicle is on blocks. And yes, do be very careful when turning tires - when the vehicle is on blocks.   Hope this helps as well.   .
#9 of 21 chevy venture engine issues by lauraha Jun 06, 2009 (9:49 am)
hello? i'm looking for some help out there. i just bought a car ...three days ago, after inspection, insurance and a quick trip to pick up a friend, my 2001 chevy venture is shot. First at a stoplight on my way to the insurance company it died, started right up and proceeded on, about two hours later of back and forth driving , on my way up a hill it statred to make a weird rattle sound(knocking) my friend assured me it was the motorcycle up the road yet i knew better. i finishe dgetting up this steep hill and yeap ther was a really loud knocking. my friends man came piucked us up and said it sounded like a rod or a lifter. the perrson i bought it from said ther was a new engine put in it. with warranty. is taht transferrable? who does the work, etc etc. and if not what in world is it? please help anyone? ? Replies to this message: rattles (Jun 08, 2009 7:01 pm)
#10 of 21 Re: chevy venture engine issues [lauraha] by rattles Jun 08, 2009 (7:01 pm)
Replying to: lauraha (Jun 06, 2009 9:49 am) I'm from england,so unfortunately I am unable to comment on your rights regarding purchase, warranty etc. However I can tell you what happened to my chevvy. the inlet manifold gaskets are a known issue with these engines. mine blew so badly it leaked coolant into one of the cylinders whilst it was running and bent the connecting rod. This made the knocking noise that sounded like your description. I could not tell if it was a lifter or a rod till i took it apart. I removed the heads and turned over the engine by hand and noticed one of the pistons was not rising to the top of the cylinder. I had to remove the engine and replace said rod. Parts cost around $1000 canadian. I presume it is a private purchase, you might be able to appeal to their better nature and get some form of return if you ask, you never know. If not you need a good mechanic, my engine has been fine ever since rebuild, i personally suggest repair rather than secondhand unit - better the devil you know. And it seems to be such a common fault you are likely to be purchasing more trouble. Good luck, hope this is somewhat helpful. I am tracking this thread, if I can be of further help or if you have more info dont hesitate to post

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