The first thing you may want to do is make sure the blower wheel (#4 on the diagram) is not sliding along the motor shaft. If it does, replace it.
If there is nothing wrong, the new high limit thermostat may solve the problem.
If you need the correct part numbers, post the serial number of the dryer.
Gene.
[FONT=Calibri][SIZE=3][COLOR=#000000]The blower wheel is in good shape.[/COLOR][/SIZE][/FONT]
[FONT=Calibri][SIZE=3][COLOR=#000000]I rechecked the continuity on all of the parts and noticed that the Thermistor gave me resistance of 8ohm (if I am reading it correctly). Should this part be 0 like the rest?[/COLOR][/SIZE][/FONT]
[FONT=Calibri][SIZE=3][COLOR=#000000]My model number is MDG5500aWW with a serial number of 56756985AX. If the Thermistor is ok I will order a new high limit thermostat.[/COLOR][/SIZE][/FONT]
[FONT=Calibri][SIZE=3][COLOR=#000000]Thanks[/COLOR][/SIZE][/FONT]
The high limit thermostat AP6007529
The normal thermistor resistance should be about 10K Ohms at 70 degrees.
Gene.
[FONT=Calibri][SIZE=3][COLOR=#000000]Thanks Gene.[/COLOR][/SIZE][/FONT]
[FONT=Calibri][SIZE=3][COLOR=#000000]I ordered the part and will let you know how it goes.[/COLOR][/SIZE][/FONT]
[FONT=Calibri][SIZE=3][COLOR=#000000]This all started when I replaced a squeaky Bearing Idler Assembly . Can you think of anything that might have caused this problem. Could I have re-installed something wrong when putting it back together? Can the electric motor direction be reversed? I am grasping at anything at this point and am willing to look at any possibility. If I were to star this all over from the beginning, what would you have me check/replace?[/COLOR][/SIZE][/FONT]
[FONT=Calibri][SIZE=3][COLOR=#000000]I see the flame come on and stay lit for about 2 minutes. It goes off for about 2 minutes and then it lights back up for about 30 seconds.[/COLOR][/SIZE][/FONT]
[FONT=Calibri][SIZE=3][COLOR=#000000]Update:[/COLOR][/SIZE][/FONT]
[FONT=Calibri][SIZE=3][COLOR=#000000]I changed the High limit thermostat, it had no effect.[/COLOR][/SIZE][/FONT]
[FONT=Calibri][SIZE=3][COLOR=#000000]My symptoms are that the dryer can run (on timed drying) for an hour and the clothes are not dry. If sensor dry is selected, the timer counts down quickly (starts at 60 and is at 20 in about 10 min)but when the buzzer sounds the clothes are not even close to being dry. Any ideas on what I should look at?[/COLOR][/SIZE][/FONT]
[FONT=Calibri][SIZE=3][COLOR=#000000]Does anyone have any ideas of what I should try next? I’m not sure where to go from here.[/COLOR][/SIZE][/FONT]
It should stay ON for about a minute. Such short time points to insufficient venting.
The control board can be bad as well.
Gene.
[quote=Gene;11884]The first thing I would check for continuity is the thermal fuse (#7 on the bulkhead parts break down diagram).
If the thermal fuse is blown, it has to be replaced together with the cycling thermostat (#9 on the bulkhead parts break down diagram).
The part number for the thermal fuse is [COLOR=#0066cc]AP3132867[/COLOR]
The part number for the cycling thermostat is [COLOR=#0066cc]AP3131939[/COLOR]
Here are the break down diagrams for the Whirlpool dryer Model LGR7648KQ1
Gene.[/quote]
Hi Gene,
I have order and replaced all these parts from apliancepartpros.com (Ignitor,Thermal fuse,Hi-limit Thermostat, both Gas coil valve and thermal cycing. I have checked the blower wheel in good shape and clean vent to the outside. Turn on dryer, the ignitor glow for 20 seconds and then goes out, I could smell the gas, but no flame.Can you think of anything that have caused the problem. Please help! User Mqcheng64 .Thanks
[quote=mqcheng64;343279]Hi Gene,
I have order and replaced all these parts from apliancepartpros.com (Ignitor,Thermal fuse,Hi-limit Thermostat, both Gas coil valve and thermal cycing. I have checked the blower wheel in good shape and clean vent to the outside. Turn on dryer, the ignitor glow for 20 seconds and then goes out, I could smell the gas, but no flame.Can you think of anything that have caused the problem. Please help! User Mqcheng64 .Thanks[/quote]Maytag MDG8600AWW Dryer
Hi Gene,
I have replaced all these order from Apliancepartpros.com ( ignitor, Thermal fuse, Hi-limit thermostat, Both gas coil valve and cyling thermostat). Checked all parts passed continuity, checked blower wheel in good shape and cleaned vent to outside and still have same problem. Turn turn on dryer the ignitor glow for 20 seconds and then goes out, I could smell the gas , but no flame. Can you think of anything that have caused this problem. Dryer Model#MDG8600AWW Maytag . Please Help! Thanks
[QUOTE=mqcheng64;343282]Maytag MDG8600AWW Dryer[/QUOTE]
Sounds like the problem is a bad gas valve itself.
Here are the breakdown diagrams and Replacement parts for MAYTAG MDG8600AWW DRYER | AppliancePartsPros.com
Gene.
Got a gas dryer Whirlpool model SGDX600JQ2, the timer is not turning, heat will kick in for about 5 minutes, then the heat will shut off, the dryer will keep on turning all day if a do not shut it off manually. I need advise an what to part to buy. Matt
Mr Matt,
Very likely the problem is a bad gas valve coils.
Here are the breakdown diagrams and Replacement parts for WHIRLPOOL SGDX600JQ2 | AppliancePartsPros.com
Gene.
[quote=Gene;343497]Mr Matt,
Very likely the problem is a bad gas valve coils.
Here are the breakdown diagrams and Replacement parts for WHIRLPOOL SGDX600JQ2 | AppliancePartsPros.com
Gene.[/quote]
Hi Gene,
I will order the parts to install, and keep you posted on the outcome. Thx for your quick response. Matt 
Hi Gene,
This is Mqcheng64 , I received the Gas Valve today from APP. and installed it, it’s works few times and goes back same problem. what do i do next?Thanks
[QUOTE=mqcheng64;345249]Hi Gene,
This is Mqcheng64 , I received the Gas Valve today from APP. and installed it, it’s works few times and goes back same problem. what do i do next?Thanks[/QUOTE]
Unlikely, but there is a small chance that the flame sensor contacts open prematurely.
Gene.
P.S. Be aware that any unneeded parts purchased from Appliance Parts Pros can be return within 45 days.
Hi Gene,
The gas valve came in today from App and I installed it. I tested a few times it’s works fine. put everything back together and test a first load and went back same problems.Please advise , Thanks mqcheng64
Hi Gene,
The gas valve came in today from App and I installed it right away. It’s works first few tested.After I put it’s together then test a first load and went back same problem.The ignitor glow for 20 seconds then goes out I could smell gas but no flame. Thanks
Hi gene,
I checked with multimeter and there is contuinity in flame sensor. Perhaps Temperature control element broke.please advise,Thanks.
The possible problem with the flame sensor I mentioned in the previous post can not be proved by continuity test. I would just order it and give it a try.
Gene.