power cuts/engine sputters when going over a bump or WOT - Ford Truck Enthusiasts Forums
Go Back   Ford Truck Enthusiasts Forums > Bronco > 1978 - 1996 Big Bronco
Sign In
Register Forgot Password?

1978 - 1996 Big Bronco SPONSORED BY:

power cuts/engine sputters when going over a bump or WOT

LinkBack Thread Tools Search this Thread
Old 01-30-2005, 06:11 PM
Mary_Kate_Olsen's Avatar
Mary_Kate_Olsen Mary_Kate_Olsen is offline
Senior User
Join Date: Oct 2002
Location: Vermont, USA
Posts: 157
Mary_Kate_Olsen is starting off with a positive reputation.
power cuts/engine sputters when going over a bump or WOT

I have noticed a weird problem in my bronco. When I hit a medium to large bump in the road the power from the battery will drop out for just a second. Usally this just means the stereo will turn off and back on. And the voltage meter on the dash will drop to Zero volts then bounce right back to normal.

Sometimes the engine will lose power and make a loud pop/bang when the voltage drops. And the sudden loss and reapplication of power at the wheels can cause a jolt which will trigger the whole thing to happen agian.

Is there anything I should check that might be causing this?

I don't know if this is related but here are some other simptoms I have seen recently: It only happens with it is very cold (usally lower then -10F) and the engine hasn't fully warmed up yet, but it will be idleing fine and can be reved normaly with the clutch depressed. I will start drving and usally after I shift into second gear and start to accelerate (opening with throttle more) I will lose power and the engine will start to sputter. Closing the throttle stops the sputtering and returns the engine's power. This happens a lot when trying to go up a hill even a very sligh slope.

It seems to happen when I'm in the middle of an intersection too. If I depress the clutch I can rev the engine up and slip the clutch to get power no problem.

Is there anything to fix this cold day problem? I always warm the bronco up for 10-15 minuets in the morrning. But when leaving work at night I don't want to sit in a cold truck for 10 minuets. 90% of the time it has no trouble getting home.

Thanks for any help guys. This week to suppost to be pready warm (20F degrees). So I might be able to work on the bronco, if it isn't too complicated.
Mary-Kate Olsen
1990 Ford Bronco 302EFI 5-speed M/T
Reply With Quote
Old 01-30-2005, 08:34 PM
BroncoBoss351 BroncoBoss351 is offline
Junior User
Join Date: Jan 2005
Posts: 63
BroncoBoss351 is starting off with a positive reputation.
Make sure ur cables dont have any damaged wires from battery acid and such, and clean off the terminals and make sure that the cables are on tight.. My friend had the same problem with his 240 sx with the sputtering, but his was the timing was off, which urs isnt if it only does it sometimes.. hoped that helped a little :/.
Reply With Quote
Old 01-31-2005, 08:50 AM
Kemicalburns's Avatar
Kemicalburns Kemicalburns is offline
Post Fiend
Join Date: Jul 2002
Location: OregonCity,OR
Posts: 13,532
Kemicalburns has a great reputation on FTE.Kemicalburns has a great reputation on FTE.Kemicalburns has a great reputation on FTE.Kemicalburns has a great reputation on FTE.
check the wires that go in right below your tfi coil. any wire related to ignition could be the cause , and if they are loose or shorting it will cause what your discribing.
94 Bronco XLT 357/E4OD/Warn HS9500I,6"ProComp Stage II 35x12.5x15 BFG AT's,4.88 gears/AussieFront/rear open,Edelbrock efi intake,jba headers
2007 xlt F250 CC 6.0 stock, 33 ToyoMT
2009 Focus
Reply With Quote
Old 01-31-2005, 08:50 AM

Similar Threads
Thread Thread Starter Forum Replies Last Post
5.4 Cold weather transmission sticking coleaukee Modular V8 (4.6L, 5.4L) 1 12-19-2013 10:12 PM
Rough idle, stalls, loses power after it warms up bigfish6025 Pre-Power Stroke Diesel (7.3L IDI & 6.9L) 17 10-27-2013 09:10 PM
Low RPM stumble Bubba Jones 1978 - 1996 Big Bronco 11 08-01-2012 09:09 PM
6.0 white/gray smoke at idle. cleebmx 6.0L Power Stroke Diesel 9 08-15-2007 03:10 PM
TPS Voltage Question Erratic IDLE hawki_peers Ranger & B-Series 3 06-04-2005 07:36 PM

Go Back   Ford Truck Enthusiasts Forums > Bronco > 1978 - 1996 Big Bronco

250, 99, accelerating, bronco, bumps, cutting, engine, expedition, ford, lightning, raptor, sputtering, sputters, warm, wot

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 On
Trackbacks are On
Pingbacks are On
Refbacks are On

Forum Jump

All times are GMT -5. The time now is 10:48 AM.


Powered by vBulletin® Version 3.8.7 AC2
Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Advertising - Terms of Use - Privacy Statement - Terms of Service - Jobs
This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. FordŽ is a registered trademark of the Ford Motor Company.

vbulletin Admin Backup