RPM doesn't drop after shifting when the Heater is on??? - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars
Ford Ranger Forum Forum for discussion of the Ford Ranger.

 
LinkBack Thread Tools Display Modes
post #1 of 4 (permalink) Old 11-24-09, 04:44 AM Thread Starter
Registered User
 
Join Date: Nov 2009
Posts: 3
RPM doesn't drop after shifting when the Heater is on???

97 B2300, 5 spd.

This happens ONLY when the heater is on...

Let's say I am in first gear.. I go up to 3,000 RPM then hit the clutch to shift into second, after I hit the clutch, the RPM sticks at 3,000 RPM and doesn't go back down unless I slow down to like 10MPH and getting ready to stop at a stoplight or something.
If I'm about to go down a hill, I usually just take it out of gear and leave it in neutral while rolling down, but when I hit the clutch, it stays at whatever RPM I was at before, defeating the purpose.

The weird part is that when it is happening, and the RPMs are stuck at 3,000+, I can turn the knob of the heater to the off position, and the RPMs drop instantly back down to idle (800-900).

When the heater is off, I have no problems at all. This is really beginning to get bad because it's getting colder and I need my heater to be on. Switching into a higher gear while I'm already sitting at 3-4k RPM isn't good at all. It grinds into gear often.

Does anyone have any idea what it could be?

samerooo is offline  
Sponsored Links
Advertisement
 
post #2 of 4 (permalink) Old 11-25-09, 04:22 AM Thread Starter
Registered User
 
Join Date: Nov 2009
Posts: 3
Re: RPM doesn't drop after shifting when the Heater is on???

Bump. Noone has any ideas? :(
samerooo is offline  
post #3 of 4 (permalink) Old 11-25-09, 08:11 AM
2002 F150 XLT
 
Bert's Avatar
 
Join Date: Nov 2008
Location: Oregon
Posts: 10,311
Re: RPM doesn't drop after shifting when the Heater is on???

When you turn the heater on, does the A/C come on? If it's in defrost or mix it will. The IAC might be bad. Try cleaning the IAC (Idle air control) valve.

Bert
Bert is offline  
post #4 of 4 (permalink) Old 11-25-09, 06:36 PM
canuck
 
360ci's Avatar
 
Join Date: Nov 2007
Location: Waterloo
Posts: 2,481
Re: RPM doesn't drop after shifting when the Heater is on???

I agree, check the IAC. Not sure if your truck has a throttle position sensor, but it's a replacement item as well. Some IAC's can be cleaned with carb cleaner, soak it, then wipe off with a cloth. Just DO NOT move the plunger more than 1/4" or you'll have to buy a new one for around $40.

'11 Ram Quad Cab 4x4 SXT 5.7L HEMI (stock); 48,500m
'06 Pontiac G6 GT 3.5L 220hp; 64,000m
'12 Chrysler 200 Limited 3.6L 283hp; 28,000m
'99 Taurus 3.0L 2V Vulcan 145hp; 154,300m - Traded
Amsoil in all vehicles!
360ci is offline  
Sponsored Links
Advertisement
 
Reply

  Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > Ford Trucks | Utes | Vans |SUVs | Crossovers > Ford Ranger Forum


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome