Welcome Guest [Log In] [Register]
Posted ImageWelcome to the all new Geo Metro Forum. We hope you enjoy your visit.

You're currently viewing our forum as a guest. This means you are limited to certain areas of the board and there are features you can't use and images you can't see. Registration is simple, fast, and completely free. If you're already a member please log in to your account to access all of our features:

Join our community!




Username:   Password:
Add Reply
new to geo forums, but not geo; introductions and help
Topic Started: Mar 4 2012, 12:51 PM (1,547 Views)
Wickednessity
New Member
[ *  * ]
hello, im Kenny. im in need of some help. ive had my '94 geo metro for over a year now, and have done some self mantainence on it, with some friends' help. but i cant figure this one thing out. the check engine light is flashing a 5-1 code. and the car keeps boging out when im driving. any clues to the reason for this? ive replaced the egr valve already as my old one had a hole in it. so, any one have any ideas?

Kenny
Offline Profile Quote Post Goto Top
 
Jittney
Anchorage 92 XFi

Welcome to the forum, Wickednessity :coffee
There are a number of threads on code 51.
Here's one for a 94 with a link to another thread on code 51.
http://geometroforum.com/topic/4567480/1/
I see you replaced the EGR valve.
Did you clean out the passageway?
Good luck, and keep us posted. :)
Offline Profile Quote Post Goto Top
 
GeoStalker
Member Avatar
"Chicks dig me and guys think I'm cool."

We've got a "pinned" topic on this. check engine codes

51 - EGR System & REGT Sensor Circuit

Offline Profile Quote Post Goto Top
 
Johnny Mullet
Member Avatar
Fear the Mullet

Compression test that engine. If the EGR ports are plugged, the valves may be pretty carboned up also.
Online Profile Quote Post Goto Top
 
Wickednessity
New Member
[ *  * ]
thanks for the info guys, i do not know how to navigaite these forums very well as of yet. i appreciate the input. but i cant seem to find out why its bogging down. not one of the topics you fellow listed had mention of this. if it did, then i over looked it.

as for the passage ways, no, i dont think i did actually. i was cleaning out the old egr, very carbed up, and noticed the hole. had a friend bring me aanother one and then we attached it. ill check on the whole thing and see how much its gunked up.

but in the mean time, id like to know why its bogging down. its the gunked up then obviously cleaning would fix it, but if it could be something else then i can isolate what could cause that in correlation with the egr issues ive already had.

thank you guys, appreciate the assistence.
Offline Profile Quote Post Goto Top
 
Wickednessity
New Member
[ *  * ]
"Parts required

Wrench (10mm ??) to remove the EGR (careful and you can reuse the gasket)

2 cans Brake Cleaner

1 small screwdriver (to whittle away the carbon)

a rag to clean your hands when your done.

clean the passages that woodie has in that picture too.

extra tool if they are particularly bad is some braided steel cable with an end frayed and your cordless drill. Think "drain snake" for your EGR :-)

clean it up till its nice and shiny make sure the diaphragm moves (push on it)

to test if your EGR mechanically functions start the car and PUSH the diaphragm the car should stutter as if it wants to die.

when you get it all together its going to be a *@#$#$ to get started and run really rough (its choking on that carbon and all that brake cleaner) just keep cranking it and lightly gassing the pedal it will start up and clear out in a few seconds.

Code 51 will be gone."


This i shall do and check to see if it works. but when we replaced the egr we did clean out my sysetm somewhat. we dropped seafoam i believe into the engine to clean the system. lots of smoke and the rough start like the above post stated.

thanks again. also, i didnt meantion that i shall try all those things you guys mentioned, but as for the compression test goes, what would this tell me besides that the engine is dying or dead?
Offline Profile Quote Post Goto Top
 
Bad Bent
Member Avatar
Facetious Educated Donkey

Wickednessity
Mar 5 2012, 11:50 AM
but as for the compression test goes, what would this tell me besides that the engine is dying or dead?
Welcome to your new forum, Wickednessity! :coffee

A dying engine would bog down. Other indicators would be your plug wire condition, distributor cap condition and spark plugs. Bogging could also be your catalytic converter. Considering that the EGR and the passages are carboned up your Cat. may be clogged also. We usually increase the tiing to 8-10o BTDC to slow the carbon build-up. :-/

Compression test; http://geometroforum.com/topic/2574993/1/
Offline Profile Quote Post Goto Top
 
Woodie
Member Avatar


Clogged EGR will not effect the way your car drives IN ANY WAY. It will simply light the CEL
Offline Profile Quote Post Goto Top
 
GeoStalker
Member Avatar
"Chicks dig me and guys think I'm cool."

I would recommend a fresh head gasket. It's already been compressed and any crack or malformity could result in overheating after reinstall.
Offline Profile Quote Post Goto Top
 
Wickednessity
New Member
[ *  * ]
Bad Bent
Mar 5 2012, 11:09 PM
Wickednessity
Mar 5 2012, 11:50 AM
but as for the compression test goes, what would this tell me besides that the engine is dying or dead?
Welcome to your new forum, Wickednessity! :coffee

A dying engine would bog down. Other indicators would be your plug wire condition, distributor cap condition and spark plugs. Bogging could also be your catalytic converter. Considering that the EGR and the passages are carboned up your Cat. may be clogged also. We usually increase the tiing to 8-10o BTDC to slow the carbon build-up. :-/

Compression test; http://geometroforum.com/topic/2574993/1/
plug wire connection? not a clue as to what that is. distributor cap was cleaned and spark plugs were replaced. some one else mentioned that i should clean the cat. as did my friend bryan, im gunna take off the egr and clean it again, get a new gasket for it, try to remove cat and clean it. and compression test it soon. we did previously, but the compressor wasnt working properly. or so he said. because it was saying i dont have compresssion in one cylinder, but as i could actually go above 60 (car can do 70-80 no problem) it was the tester. is this actuarte?

and the bogging has gotten worse, very worse. if i dont gas it, and just give it a little gas, it doesnt bog.

this is my only car so i really need to fix it. i wont admit its dying untill ive exhaused all other possiblietes.

thank you guys for all the information and ideas.


{EDIT}
the car seems to only do this in the mornings. i just drove it around some and it did ok. no bogging (also can be described as "bucking") could the engine being warm (by sun for instance) cause it to not bog? and if so, why the cold causing it?

Again, thanks guys.

{EDIT}
i bought a fuel filter today, im assuming is has something to do with the fuel system because of the bogging during acceleration.

Thoughts?

{EDIT}
alright, so im just going to give a new list of all the issues my geo is having.

Issues~

-bogging down when gas pedal is depressed about half way, regardless of what gear its in. she drives ok as long as i keep her slow.
-i know the rear driver side wheel bearings need replacement but am trying to fix bogging first as its a larger priority.
-car dies for some reason when gas pedal is no longer being depressed. this is not always, just sometimes. seems to be during the cold though.
-car has rough idle, very rough whole vehicle shudders and shakes.
-car dies when just idling sometimes.
-oil loss, this has been an issue since i got the geo, so i believe it to not be a factor but mentioning it anyway.
-the egr code is flashing, though i replaced the egr valve.


Plans~
-replace fuel filter, clean cat. any other suggestions?
-pay for bearings and replace them. simple
-not a clue, but maybe adjust the idle sped to slightly higher? tips on this, ive been told that its a bad idea to mess with idle on metros...
-see above
-see above
-clean engine with rag and cleaning supplies, find out if im burning or have a hole somewhere based upon new oil stains on engine. ideas?
-going to use the post's (mentioned previously) cleaning method to clear code.

they are in order of how i plan on doing these. if you have any suggestions please help.

keep in mind, i do not have all the knowledge of abbreviations and other tech talk, please use words i can understand or at least look up with ease. and i do not have certain tools that may be necessary. also, im very low on cash as im a college student working 20 hours a week if im lucky.

guys, i really do need this geo. only means of transportation to school, work, and for my family.

thanks again for all help.
Edited by Wickednessity, Mar 8 2012, 09:14 PM.
Offline Profile Quote Post Goto Top
 
Wickednessity
New Member
[ *  * ]
replaced fuel filter.
Offline Profile Quote Post Goto Top
 
Bad Bent
Member Avatar
Facetious Educated Donkey

Plug wires are spark plug wires. Test them this way: http://www.youtube.com/watch?v=xXAFQa0R9hA

The EGR will not cause bogging.
Try this: Can you remove the two bolts holding the exhaust on to the exhaust manifold? Item #11
Posted Image

If you can remove those two bolts, start the car and see if it bogs. You might use a wire to hold the pipe to the side if you need to go for a test drive. If it doesn't run better then your Catalytic converter is bad. OR (if those bolts are frozen) you can raise the car up and loosen the two nuts #23 and drop the pipe a couple of inches and shine a flashlight in the Cat. and see if you can see if it is clogged.
Now you have two options; #1 if you don't have emissions testing for registration you can "gut the cat" by sticking a broom stick or metal pipe in the tube and breaking a hole in the screen(s). Not good for the environment. #2 buy a new Cat./pipes (#9 above) for maybe $130 shipped. http://www.autopartswarehouse.com/

In the morning the engine is cold so you may not be getting enough compression; the gap around the piston is wider due to contracting metal. Oil gets past the rings. It warms up and all is better. If the rings are sticking then you can try adding some Marvel Mystery Oil and it may loosen the rings. However oil in the exhaust will destroy the catalytic converter.

If you have a clogged fuel injector or fuel line then you can add Chevron Techron to the gas or 1/3 a can of Seafoam. Also a lot of us use Seafoam other ways; http://geometroforum.com/topic/681815/1/
Offline Profile Quote Post Goto Top
 
Wickednessity
New Member
[ *  * ]
bogging was an issue with the throttle. the black box on the backside of throttle. do not remember its name at the moment. replaced and no more bogging. but now its flashing the 23 - IAT Sensor Circuit, 32 - Pressure Sensor Circuit, and 51 - EGR codes. one thing down another pops up. lol. any ideas?

Offline Profile Quote Post Goto Top
 
Jittney
Anchorage 92 XFi

IIRC, check the ground on the back of the intake manifold for loose or corroded ground? :
found a thread
http://geometroforum.com/topic/2023447/1/
Offline Profile Quote Post Goto Top
 
Bad Bent
Member Avatar
Facetious Educated Donkey

:gp
Offline Profile Quote Post Goto Top
 
1 user reading this topic (1 Guest and 0 Anonymous)
Go to Next Page
« Previous Topic · Introductions · Next Topic »
Add Reply