# \#montana **URL:** https://community.cartalk.com/tag/montana/2179.md [Latest](https://community.cartalk.com/latest.md) · [Categories](https://community.cartalk.com/categories.md) · [Tags](https://community.cartalk.com/tags.md) --- ## [Fuel additives how often should you use them](https://community.cartalk.com/t/fuel-additives-how-often-should-you-use-them/49785)
**Author:** [@doolie92](https://community.cartalk.com/u/doolie92)\ **Replies:** 48\ **Last updated:** [January 30, 2026, 1:54am UTC](https://community.cartalk.com/t/fuel-additives-how-often-should-you-use-them/49785 "2026-01-30T01:54:37Z")
I am planning to start using seafoam in my gas and oil ,how often should you a add it an how much.The label isn't to clear about it. --- ## [2005 Pontiac Montana - lost 1/2 tank gas](https://community.cartalk.com/t/2005-pontiac-montana-lost-1-2-tank-gas/178733)
**Author:** [@Brenda29](https://community.cartalk.com/u/Brenda29)\ **Replies:** 16\ **Last updated:** [August 17, 2021, 8:34pm UTC](https://community.cartalk.com/t/2005-pontiac-montana-lost-1-2-tank-gas/178733 "2021-08-17T20:34:39Z")
I filled my car up with gas. WEnt less then 10 miles watching the gas go to 1/2 tank!!! Can smell no leak in engine area, nothing on ground under car. --- ## [Won't Start, Only Showing HVAC Codes](https://community.cartalk.com/t/wont-start-only-showing-hvac-codes/159402)
**Author:** [@Mike\_Davey](https://community.cartalk.com/u/Mike_Davey)\ **Replies:** 7\ **Last updated:** [March 9, 2020, 3:58pm UTC](https://community.cartalk.com/t/wont-start-only-showing-hvac-codes/159402 "2020-03-09T15:58:21Z")
Hi folks. My van lost power while I was driving down the highway. It cranks, but won’t start. I can hear the fuel pump engaging, so I don’t think that’s the cause. The only codes my scanner is showing are all HVAC codes… --- ## [2005 Pontiac Montana loses power, then can’t exceed 30-40 mph](https://community.cartalk.com/t/2005-pontiac-montana-loses-power-then-can-t-exceed-30-40-mph/154993)
**Author:** [@sly1fox1](https://community.cartalk.com/u/sly1fox1)\ **Replies:** 6\ **Last updated:** [December 22, 2019, 2:59am UTC](https://community.cartalk.com/t/2005-pontiac-montana-loses-power-then-can-t-exceed-30-40-mph/154993 "2019-12-22T02:59:51Z")
When this vehicle overheats, I lose power and it will only go 30 - 40 mph. I know you are going yell at me for not pulling over and investigating why the overheat problem but I will offer you the following: 200,000 mi… --- ## [Engine cutting out when warm at higher rpms](https://community.cartalk.com/t/engine-cutting-out-when-warm-at-higher-rpms/115033)
**Author:** [@hypophthalmus](https://community.cartalk.com/u/hypophthalmus)\ **Replies:** 8\ **Last updated:** [April 12, 2018, 8:37pm UTC](https://community.cartalk.com/t/engine-cutting-out-when-warm-at-higher-rpms/115033 "2018-04-12T20:37:23Z")
I have a 1999 Pontiac Montana van. It runs fine when its cold. Eventually the engine starts cutting out at higher rpms (2500-3000), eventually getting worse (cutting out at increasingly lower rpms). It used to take 50 … --- ## [Engine sputtering in gear](https://community.cartalk.com/t/engine-sputtering-in-gear/108854)
**Author:** [@hypophthalmus](https://community.cartalk.com/u/hypophthalmus)\ **Replies:** 29\ **Last updated:** [November 3, 2017, 11:00pm UTC](https://community.cartalk.com/t/engine-sputtering-in-gear/108854 "2017-11-03T23:00:13Z")
I have a 1999 Pontiac Montana with ~254,000 miles. After driving it about 60 miles, the engine starter sputtering if I took it above 2k rpm, but only if it’s in gear. If it’s in park, the engine runs fine. If I let it … --- ## [Code for EGR valve stuck open after replacing EGR valve](https://community.cartalk.com/t/code-for-egr-valve-stuck-open-after-replacing-egr-valve/94107)
**Author:** [@hypophthalmus](https://community.cartalk.com/u/hypophthalmus)\ **Replies:** 14\ **Last updated:** [July 29, 2016, 2:22pm UTC](https://community.cartalk.com/t/code-for-egr-valve-stuck-open-after-replacing-egr-valve/94107 "2016-07-29T14:22:08Z")
I had a code for the EGR valve stuck open. I tried cleaning it but it didn't help (and didn't seem that dirty). Then I tried replacing it. Both times the code came back. What should I do now? I reset the code each time… --- ## [Released refrigerant from a bolt on the AC compressor](https://community.cartalk.com/t/released-refrigerant-from-a-bolt-on-the-ac-compressor/93710)
**Author:** [@hypophthalmus](https://community.cartalk.com/u/hypophthalmus)\ **Replies:** 3\ **Last updated:** [July 23, 2016, 2:51am UTC](https://community.cartalk.com/t/released-refrigerant-from-a-bolt-on-the-ac-compressor/93710 "2016-07-23T02:51:49Z")
I was trying to unmount the air conditioning compressor. Much to my alarm, refrigerant starting hissing out quickly... wrong bolt. Should I worry about this bolt sealing the refrigerant properly after loosening it? Ho… --- ## [Brown sludge in cooling system, 1999 GM 3.4L engine](https://community.cartalk.com/t/brown-sludge-in-cooling-system-1999-gm-3-4l-engine/93621)
**Author:** [@hypophthalmus](https://community.cartalk.com/u/hypophthalmus)\ **Replies:** 65\ **Last updated:** [July 22, 2016, 2:51am UTC](https://community.cartalk.com/t/brown-sludge-in-cooling-system-1999-gm-3-4l-engine/93621 "2016-07-22T02:51:53Z")
While driving my recently purchased minivan (a 1999 Pontiac Montana) for about 40 miles, I noticed the temperature gauge was reading high when I wasn't moving very fast, though short of what appears to be the overheating… --- ## [How long to let the coolant circulate before testing it with a hydrometer?](https://community.cartalk.com/t/how-long-to-let-the-coolant-circulate-before-testing-it-with-a-hydrometer/93812)
**Author:** [@hypophthalmus](https://community.cartalk.com/u/hypophthalmus)\ **Replies:** 9\ **Last updated:** [July 14, 2016, 5:12am UTC](https://community.cartalk.com/t/how-long-to-let-the-coolant-circulate-before-testing-it-with-a-hydrometer/93812 "2016-07-14T05:12:53Z")
I flushed out my cooling system through the radiator with distilled water four times. It's a 3 gallon system, but I could only drain/fill a bit more than a gallon each time. I figured that by the end of it, it's mostly… --- ## [Please help](https://community.cartalk.com/t/please-help/89229)
**Author:** [@JKZ](https://community.cartalk.com/u/JKZ)\ **Replies:** 7\ **Last updated:** [March 11, 2015, 1:32am UTC](https://community.cartalk.com/t/please-help/89229 "2015-03-11T01:32:03Z")
I have a problem with my radio.........my local stations are SUPER quiet, everything in between is static of course but the static and the cd player work at the normal volumes....but I miss my radio and I dont know what … --- ## [O2 senser, 2001 pontiac montana](https://community.cartalk.com/t/o2-senser-2001-pontiac-montana/87284)
**Author:** [@ryry36910](https://community.cartalk.com/u/ryry36910)\ **Replies:** 6\ **Last updated:** [September 21, 2014, 6:41pm UTC](https://community.cartalk.com/t/o2-senser-2001-pontiac-montana/87284 "2014-09-21T18:41:20Z")
Hey, my first time here, I have a 2001 Pontiac Montana van, when i drive i feel like there is just not enough power there. Most of the time when i hit 30mph the engine drops in power, hard to explain so I will try my bes… --- ## [Transmission on 2001 Pontiac Montana](https://community.cartalk.com/t/transmission-on-2001-pontiac-montana/84516)
**Author:** [@LolaDee](https://community.cartalk.com/u/LolaDee)\ **Replies:** 7\ **Last updated:** [April 9, 2014, 12:26am UTC](https://community.cartalk.com/t/transmission-on-2001-pontiac-montana/84516 "2014-04-09T00:26:38Z")
I have a 2001 Montana with 140,000 miles on it. I bought it used five years ago. The transmission is going out. The shop did a scan and found the torque converter clutch is sticking on. This is a foreign language to … --- ## [No down shift on 02 Montana](https://community.cartalk.com/t/no-down-shift-on-02-montana/82720)
**Author:** [@02\_Montana](https://community.cartalk.com/u/02_Montana)\ **Replies:** 1\ **Last updated:** [December 19, 2013, 8:34am UTC](https://community.cartalk.com/t/no-down-shift-on-02-montana/82720 "2013-12-19T08:34:53Z")
02 Montana with 4T65E electronic 4 speed transmission. car has 75000 miles. normal driving and shifting seems to be fine. transaxle will not downshift with accelerator pedal pressed to the floor. no check or service eng… --- ## [2003 Pontiac Montana engine idle malfunction](https://community.cartalk.com/t/2003-pontiac-montana-engine-idle-malfunction/82134)
**Author:** [@PeteTX](https://community.cartalk.com/u/PeteTX)\ **Replies:** 0\ **Last updated:** [November 7, 2013, 10:57pm UTC](https://community.cartalk.com/t/2003-pontiac-montana-engine-idle-malfunction/82134 "2013-11-07T22:57:40Z")
On occasion engine idle jumps up to as much as 2500 rpm and won't return to normal until engine is turned off. At times it has also dropped the idle to zero and I have to keep my right foot on the gas to keep it alive wh… --- ## [2001 Montana Radio shows ERROR](https://community.cartalk.com/t/2001-montana-radio-shows-error/81082)
**Author:** [@momaimp](https://community.cartalk.com/u/momaimp)\ **Replies:** 9\ **Last updated:** [August 27, 2013, 5:22pm UTC](https://community.cartalk.com/t/2001-montana-radio-shows-error/81082 "2013-08-27T17:22:49Z")
I had trouble starting my 2001 Montana this morning. After the third try, the engine turned over but then I noticed the theft lock light was on and the radio displayed "ERROR". I couldn't turn the radio on or clear the c… --- ## [Pontiac Vibration Noise](https://community.cartalk.com/t/pontiac-vibration-noise/80864)
**Author:** [@6KidBus](https://community.cartalk.com/u/6KidBus)\ **Replies:** 0\ **Last updated:** [August 12, 2013, 6:14pm UTC](https://community.cartalk.com/t/pontiac-vibration-noise/80864 "2013-08-12T18:14:17Z")
I have a '04 Pontiac Montana that just recently started making a buzzing/vibration noise from the front end. Only happens when vehicle is in motion. Sound increases pitch/tone with speed, but does not change with trans… --- ## [Front end vibration noise](https://community.cartalk.com/t/front-end-vibration-noise/80837)
**Author:** [@system](https://community.cartalk.com/u/system)\ **Replies:** 3\ **Last updated:** [August 11, 2013, 6:36pm UTC](https://community.cartalk.com/t/front-end-vibration-noise/80837 "2013-08-11T18:36:54Z")
I have a 2004 Pontiac Montana, and it just started making a low buzzing vibration noise when it's in motion. tone/pitch only changes with vehicle speed, not engine RPM. It becomes noticeable at about 20 MPH. Pitch sta… --- ## [2001 Pontiac Montana head gasket or intake manifold gasket?](https://community.cartalk.com/t/2001-pontiac-montana-head-gasket-or-intake-manifold-gasket/79114)
**Author:** [@dockrat100](https://community.cartalk.com/u/dockrat100)\ **Replies:** 9\ **Last updated:** [May 21, 2013, 6:13am UTC](https://community.cartalk.com/t/2001-pontiac-montana-head-gasket-or-intake-manifold-gasket/79114 "2013-05-21T06:13:43Z")
I have a 2001 Pontiac Montana that was overheating. It was low on coolant, and using coolant. I took it to a mechanic who checked it out and found exhaust gases in the coolant. He initially told me that it was a bad hea… --- ## [2002 Pontiac Montana -- rebuild engine or purchase another vehicle?](https://community.cartalk.com/t/2002-pontiac-montana-rebuild-engine-or-purchase-another-vehicle/76471)
**Author:** [@MaryAnn1067](https://community.cartalk.com/u/MaryAnn1067)\ **Replies:** 12\ **Last updated:** [January 12, 2013, 4:51am UTC](https://community.cartalk.com/t/2002-pontiac-montana-rebuild-engine-or-purchase-another-vehicle/76471 "2013-01-12T04:51:23Z")
My husband's 2002 Pontiac Montana, we're told, will need to have the engine rebuilt. We have mechanical breakdown insurance through Geico. Something happened to the engine while my husband was driving in icy conditions… --- ## [2000 Pontiac Montana](https://community.cartalk.com/t/2000-pontiac-montana/71420)
**Author:** [@Newlove](https://community.cartalk.com/u/Newlove)\ **Replies:** 13\ **Last updated:** [March 15, 2012, 9:26pm UTC](https://community.cartalk.com/t/2000-pontiac-montana/71420 "2012-03-15T21:26:43Z")
What is causing the engine to sound like it's not getting enough gas AFTER we turn off the A/C? The two times we have used the A/C, after we push the button to turn it off, the engine sputters like it is going to die ...… --- ## [Hard downshift when cold](https://community.cartalk.com/t/hard-downshift-when-cold/71031)
**Author:** [@jludes](https://community.cartalk.com/u/jludes)\ **Replies:** 9\ **Last updated:** [February 23, 2012, 12:18am UTC](https://community.cartalk.com/t/hard-downshift-when-cold/71031 "2012-02-23T00:18:01Z")
I have a 2004 Pontiac Montana minivan. I get a hard downshift from 2nd to 1st only when the engine is cold - especially noticeable in cold weather. After a mile or so of driving (or a few minutes of idling) is shifts fi… --- ## [2003 pontiac montana van, replacing HVAC fan switch](https://community.cartalk.com/t/2003-pontiac-montana-van-replacing-hvac-fan-switch/71068)
**Author:** [@harleystratos](https://community.cartalk.com/u/harleystratos)\ **Replies:** 5\ **Last updated:** [February 22, 2012, 5:48am UTC](https://community.cartalk.com/t/2003-pontiac-montana-van-replacing-hvac-fan-switch/71068 "2012-02-22T05:48:18Z")
I just replaced the fan resistor in my truck. Her van, 2003 montana has switch problems too fan selector dial is real iffy and needs to be replaced. have to play with it to get at least one speed working. really don'… --- ## [2001 Pontiac Montana - strange noise from front end](https://community.cartalk.com/t/2001-pontiac-montana-strange-noise-from-front-end/68938)
**Author:** [@jules\_atl](https://community.cartalk.com/u/jules_atl)\ **Replies:** 2\ **Last updated:** [October 25, 2011, 6:10pm UTC](https://community.cartalk.com/t/2001-pontiac-montana-strange-noise-from-front-end/68938 "2011-10-25T18:10:00Z")
There is a strange rubbing sort of noise coming from the front end. I hear it when I take my foot off the accelerator and/or when I turn the steering wheel to the left. To me it sounds like it's coming from the passeng… --- ## [Should we sell our minivan for scrap?](https://community.cartalk.com/t/should-we-sell-our-minivan-for-scrap/68721)
**Author:** [@CARRINGMOM](https://community.cartalk.com/u/CARRINGMOM)\ **Replies:** 12\ **Last updated:** [October 20, 2011, 2:37pm UTC](https://community.cartalk.com/t/should-we-sell-our-minivan-for-scrap/68721 "2011-10-20T14:37:03Z")
Hi! My husband and I own a 1999 Pontiac Montana (extended) minivan. A year ago, my husband was waiting for the light to change at a busy intersection when he was struck from behind by a dodge ram. He survived w/ minor i… --- ## [2003 Pontiac Montana - Air Intake System Extra Part?](https://community.cartalk.com/t/2003-pontiac-montana-air-intake-system-extra-part/57437)
**Author:** [@kevintlee](https://community.cartalk.com/u/kevintlee)\ **Replies:** 4\ **Last updated:** [September 4, 2011, 7:21pm UTC](https://community.cartalk.com/t/2003-pontiac-montana-air-intake-system-extra-part/57437 "2011-09-04T19:21:02Z")
Had to take off Air Intake to replace thermostat. There is a tube coming from the duct after the filter that came off in the process. Reinstalled the Air Intake but can't find where to plug the other end of the tube to. … --- ## [2006 Pontiac Montana braking blues](https://community.cartalk.com/t/2006-pontiac-montana-braking-blues/66880)
**Author:** [@jerandi](https://community.cartalk.com/u/jerandi)\ **Replies:** 6\ **Last updated:** [August 6, 2011, 1:40pm UTC](https://community.cartalk.com/t/2006-pontiac-montana-braking-blues/66880 "2011-08-06T13:40:08Z")
I went to change the rear disk brakes on my 2006 Pontiac Montana last night. When I discovered neither brake caliper would budge. Is there a trick to fixing this or do I really have frozen calipers? --- ## [Saturn Relay window "clip"?](https://community.cartalk.com/t/saturn-relay-window-clip/61950)
**Author:** [@agerstein](https://community.cartalk.com/u/agerstein)\ **Replies:** 10\ **Last updated:** [July 3, 2011, 3:08pm UTC](https://community.cartalk.com/t/saturn-relay-window-clip/61950 "2011-07-03T15:08:14Z")
So, my our drivers side window stopped working a couple of weeks ago - first it wouldn't go down all the way, then it wouldn't go up... Long story short, it was shot. I brought it to the dealer, and they can fix it … --- ## [2001 Pontiac Montana Shifts Hard Sometimes](https://community.cartalk.com/t/2001-pontiac-montana-shifts-hard-sometimes/46511)
**Author:** [@pacecar](https://community.cartalk.com/u/pacecar)\ **Replies:** 18\ **Last updated:** [June 13, 2011, 10:19pm UTC](https://community.cartalk.com/t/2001-pontiac-montana-shifts-hard-sometimes/46511 "2011-06-13T22:19:50Z")
The transmission on my 01 Pontiac Montana shifts hard sometimes. When it does this I can turn it off and let it rest for about 30 seconds and then the hard shifting may go away. It has 60K miles on it and am planning t… --- ## [Gas](https://community.cartalk.com/t/gas/63218)
**Author:** [@doolie92](https://community.cartalk.com/u/doolie92)\ **Replies:** 18\ **Last updated:** [April 1, 2011, 4:41pm UTC](https://community.cartalk.com/t/gas/63218 "2011-04-01T16:41:34Z")
does the gas co.put other things in gas to make it burn faster.my gas mileage is shot.it feels likeallthe gas i buy goes a lot less further,can they put filler additives in gas to make it burn faster or just add somethin… [Next page](https://community.cartalk.com/tag/montana/2179.md?match_all_tags=true&page=1&tags%5B%5D=montana)