F-Body Europe


It is currently Fri Mar 29, 2024 12:43 am

All times are UTC + 1 hour





Post new topic Reply to topic  [ 12 posts ] 
Author Message
 Post subject: 1991 TPI engine problem
PostPosted: Fri Jan 07, 2005 1:52 pm 
Offline
Cool Newbie
User avatar
 Profile

Joined: Thu Dec 23, 2004 10:36 am
Posts: 35
Location: Rennes FRANCE
Hi,
I don't know what has my camaro.
I have an enormous problem with my engine since 2 or 3 months.
First my engine sound has change, sound is more deep I think.
secondly when I start, during 2 minutes engine runs good. But after (when I drice), I lose power. It's not my automatic transmission because it is in good condition.
My engine has 50% power. When I accelerate I have no power. When I stop my camaro's engine runs good. When I stop my car during 5 or 10 mn and I start, engine warm, I have the same problem, I lose power after 2 minutes. I think it's the knock sensor or distributor probelm.
An othre problem is that my temerature engine is high. Normaly the first fan must to run at 195°F and the second at 226°F. But my first fan begins to run at 222°F and the second fan never (with air cond. I have just 1 fan works. I know that second fan work because I have tested it.
Do you know what's the problem?

Thank you very much

Alborz
1991 camaro Z28
V8 5.0L TPI (305F) TH700R4


Top
 

 Post subject:
PostPosted: Fri Jan 07, 2005 3:36 pm 
Offline
Site Admin
User avatar
 Profile

Joined: Tue Jun 26, 2001 4:25 pm
Posts: 4288
Location: Vilseck
Maybe a coolant sensor or O2 sensor.


Top
 

 Post subject:
PostPosted: Fri Jan 07, 2005 4:18 pm 
Offline
Cool Newbie
User avatar
 Profile

Joined: Thu Dec 23, 2004 10:36 am
Posts: 35
Location: Rennes FRANCE
I changed my cool temp sensor. May be i't Oxygen sensor. I must to change it to see if it's this.


Top
 

 Post subject:
PostPosted: Fri Jan 07, 2005 5:24 pm 
Offline
Senior Member
User avatar
 Profile

Joined: Wed May 05, 2004 7:13 am
Posts: 706
Location: Vilseck
I think you may have a weak ignition coil. When they get hot they tend to act up under a load.

_________________
2002 Camaro Z28
416 Stroker
AFR, Comp Cam Solid Roller, Currie 9", Super Victor, 4500 TB, TH350, T&D Rockers, 50# Injectors


Top
 

 Post subject:
PostPosted: Mon Jan 10, 2005 9:21 am 
Offline
Cool Newbie
User avatar
 Profile

Joined: Thu Dec 23, 2004 10:36 am
Posts: 35
Location: Rennes FRANCE
Hi,
I have change my knock sensor but it was not the problem. Now I 'll change the ignition coil. I have read the 1991 shop manual and I tested this and I think it's my ignition coild.
I think you have true NXZ28, thank you.


Top
 

 Post subject:
PostPosted: Wed Jan 12, 2005 3:15 pm 
Offline
Cool Newbie
User avatar
 Profile

Joined: Thu Dec 23, 2004 10:36 am
Posts: 35
Location: Rennes FRANCE
yesterday I changed my ignition coil, distributor cap + rotor, spark plug wire. I think engine runs better but still I lose power. this week-end I'll change my spark, I have Bosch HR10BC, I replace by HR9BP platinum.

Do you know how I can test my bille distributor please?


Top
 

 Post subject:
PostPosted: Thu Jan 27, 2005 8:15 pm 
Offline
Cool Newbie
User avatar
 Profile

Joined: Fri Apr 16, 2004 11:16 am
Posts: 15
Location: Poland, Krakow
change the O2 sensor... could be the problem.

_________________
http://www.cardomain.com/id/unexplained666
Image
CHEVROLET- Cheap, Hardly Efficient, Virtually Runs On Luck Every Time


Top
 

 Post subject:
PostPosted: Sat Jan 29, 2005 10:26 am 
Offline
Cool Newbie
User avatar
 Profile

Joined: Thu Dec 23, 2004 10:36 am
Posts: 35
Location: Rennes FRANCE
Hi,
I changed my O2 but I have the same problem. I lose power after 2 or 3 minutes. My spark plug have carbone deposite, Now my car drink 32 liters per 60 miles :shock: :shock: :shock:. I think it's a fuel problem or maybe the canister, my billet distributor???
When I drive my engine has hesitations as far as 75 miles/hour, after 75 miles/h engine runs good and when I stoped it runs well.
It's a serious problem for me because I don't understand why I have this problem. I changed the distributor cap + rotor, spark plug, spark plug wire, knock sensor, CTS, fuel filter, O2, :crazy: :crazy: :crazy:
Next week I'll go to see a friend and test the fuel pressure...
Thanks


Top
 

 Post subject:
PostPosted: Sat Jan 29, 2005 5:48 pm 
Offline
Cool Newbie
User avatar
 Profile

Joined: Fri Apr 16, 2004 11:16 am
Posts: 15
Location: Poland, Krakow
1991Z28 wrote:
Hi,
I changed my O2 but I have the same problem. I lose power after 2 or 3 minutes. My spark plug have carbone deposite, Now my car drink 32 liters per 60 miles :shock: :shock: :shock:. I think it's a fuel problem or maybe the canister, my billet distributor???
When I drive my engine has hesitations as far as 75 miles/hour, after 75 miles/h engine runs good and when I stoped it runs well.
It's a serious problem for me because I don't understand why I have this problem. I changed the distributor cap + rotor, spark plug, spark plug wire, knock sensor, CTS, fuel filter, O2, :crazy: :crazy: :crazy:
Next week I'll go to see a friend and test the fuel pressure...
Thanks


ok, i'd check these things in this order:

1. Coil
2. plug wires
3. spark plugs
4. O2 sensor
5. ignition parts
6. ECM - check if there are any trouble codes
7. MAF

hmmm if anything comes to mind i'll add it later

_________________
http://www.cardomain.com/id/unexplained666
Image
CHEVROLET- Cheap, Hardly Efficient, Virtually Runs On Luck Every Time


Top
 

 Post subject:
PostPosted: Mon Jan 31, 2005 8:32 am 
Offline
Cool Newbie
User avatar
 Profile

Joined: Thu Dec 23, 2004 10:36 am
Posts: 35
Location: Rennes FRANCE
hi,

1- Coil ingition ok and changed (MSD dual)
2- plug wires ok and changed (MSD 8.5mm)
3- spark plugs ok and changed (bosch HR9BP)
4- O2 ok and changed (bosh)
5- ignition parts, I must to test all
6- ECM, I have no code, I have tested
7- 1991 camaro have not MAF sensor

I really think that's a fuel problem. :arrow: I must to test the fuel pressure.


Top
 

 Post subject:
PostPosted: Mon Jan 31, 2005 12:03 pm 
Offline
Cool Newbie
User avatar
 Profile

Joined: Fri Apr 16, 2004 11:16 am
Posts: 15
Location: Poland, Krakow
1991Z28 wrote:
hi,

1- Coil ingition ok and changed (MSD dual)
2- plug wires ok and changed (MSD 8.5mm)
3- spark plugs ok and changed (bosch HR9BP)
4- O2 ok and changed (bosh)
5- ignition parts, I must to test all
6- ECM, I have no code, I have tested
7- 1991 camaro have not MAF sensor

I really think that's a fuel problem. :arrow: I must to test the fuel pressure.


check the fuel pressure, fuel pump could be damaged.
CHANGE THE FUEL FILTER - it might be clogged
check fuel injectors
how about the MAF/ MAP?

_________________
http://www.cardomain.com/id/unexplained666
Image
CHEVROLET- Cheap, Hardly Efficient, Virtually Runs On Luck Every Time


Top
 

 Post subject:
PostPosted: Wed Jul 06, 2005 11:19 am 
Offline
Cool Newbie
User avatar
 Profile

Joined: Thu Dec 23, 2004 10:36 am
Posts: 35
Location: Rennes FRANCE
Hi everybody,
Just to say you that my 1991 Z28 runs very good now.
Really I don't know why??? After 6 months of problems, my engine have no lost of power or hesitation.
TPI engine is a mistery for me????

Thanks

_________________
ALBORZ
1991 Z28 V8 5.0L TPI TH700R4


Top
 

Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 12 posts ] 

All times are UTC + 1 hour



Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
cron
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group  
Design By Poker Bandits