Car sputters, lose power.


Old 05-20-09, 03:45 PM
Thread Starter
Join Date: May 2009
Location: Chicago
Posts: 2
Car sputters, lose power.

Dear all,

I have a 1997 2 door Toyota Tercel. It runs great but it recently causes me a lot of headache . The problem is the car runs good below 35mph but over that speed the car sputter, loses power and can't run faster. Two mechanic shops checked my car but they couldn't nail down the cause. They said for some reason the engine misfires or doublefires and gasoline mixture escapes to the exhaustion pipe and heat/burn it. They have changed the computer and ignition control module, checked the wires, cleaned ejection, change spark plugs, temperature sensors... but nothing solves the problem.

I very appreciate any hints and suggestions from you.

Thank you
Sponsored Links
Old 05-20-09, 06:34 PM
the_tow_guy's Avatar
Group Moderator
Join Date: Feb 2001
Location: SW Fla USA
Posts: 11,588
What codes come up when it's scanned? Should be something with all that going on.

Also, how many miles on it?

The laundry list of possible causes is pretty long and many require diagnostic testing to determine if they are bad, i.e. if you just start throwing parts at it, it could get expensive before you stunbled across the right one. Here's a partial list:

Pickup coil in distributor
Plug wires (you said "checked", but depends on how they were checked)
Fuel filter
Fuel pump
Catalytic converter

I'm sure I'm leaving things out.

Might want to consider a third mechanic. Did the first two have a good scanner and other diagnostic equipment?
Old 05-21-09, 10:41 AM
Thread Starter
Join Date: May 2009
Location: Chicago
Posts: 2
Thank you for your reply.
My car has 122K on it. As far as I know their scanner (OBD scanner I guess) didn't return any code. That why they are puzzled and didn't know how to fix my car.
Should I bring my car to Toyota dealers?
Old 05-21-09, 05:20 PM
the_tow_guy's Avatar
Group Moderator
Join Date: Feb 2001
Location: SW Fla USA
Posts: 11,588
I'm not a big fan of dealership service departments, so I'm the wrong guy to ask. They will probably fix it, but so may two dozen independent garages in your area and it won't cost as much. The trick, of course, is finding the good ones.
Old 05-21-09, 05:38 PM
Join Date: May 2006
Location: Iowa!!!!!
Posts: 3,769
A lot of mechanical things and fuel related issues probably wouldn't give you any codes and that capped performance could be fuel related. That is where a pressure test would come in. Any good shop would likely have done that.

What TG is saying about throwing parts at it is right. You don't want to replace that stuff on a "maybe it could be". Just about everything is over $100.00 per part.

I think I would do as suggested - try to get a third independent to look at it.
Old 05-22-09, 04:25 AM
pugsl's Avatar
Forum Topic Moderator
Join Date: Mar 2008
Location: Raleigh, NC
Posts: 7,909
A couple of the (radio or newspaper guys) have a list of shops that there readers have said are good,
Here is a link to there site
Car Talk
on the right side go down to mechanic files. Don't know how good they are but it's a start.

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 Off
Pingbacks are Off
Refbacks are Off

Thread Tools
Search this Thread
Display Modes