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hi i have a chevy lumina l and just recently the
Sent to Car Experts January 10 01:07 PM

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hi,
I have a 1990 chevy lumina 2.5 L4, and just recently, the engine strarted to get check engine ligt signals,and sluggish after it warms up.
A few days later, the engine broke down and had a chinkaling rattling noise, and did not start up!, so i took it home and tried to trobleshoot.
At first, i replaced the map sensor, the spark plugs, and the fuel pump and relay, but still no luck!
After that i tried the oxygen sensor.... still no start, so i removed the plug from the map sensor, and it started. After about 5 minutes it dies. the car will not start with the sensor pluged up! but when it does run it has low power! All plugs fire, and all cylnders have good compression. the car has 201,000 miles to the engine. please any ideas?

Optional Information:
1990 Chevrolet lumina L4 2.5L

Already Tried:
plugs. o2 sensor,and map sensor

Customer (name blocked for privacy)
Status:  Closed   Value: $25
Answer
January 10 1:18 PM (10 minutes and 28 seconds later)
         
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Pictureautodoc_2000 -- Auto Service Technician -- 98% Positive Feedback on 907 Car Accepts
ASE Master Tech w/ Advance Engine Performance
Reply
January 10 1:29 PM (11 minutes and 33 seconds later)
         
when i first tried it gave me codes, then it started to flash on and off rapidly! im at work right now
Customer (name blocked for privacy)
Answer
January 10 1:44 PM (15 minutes and 7 seconds later)
         
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Pictureautodoc_2000 -- Auto Service Technician -- 98% Positive Feedback on 907 Car Accepts
ASE Master Tech w/ Advance Engine Performance
Reply
January 10 1:57 PM (13 minutes and 5 seconds later)
         
ok as soon as i get off a 3:30, ill respond with the codes, and will pay you
Customer (name blocked for privacy)
Reply
January 11 10:33 AM (20 hours and 35 minutes and 31 seconds later)
         
the codes were fp...ffp...fp...ffp...ffp...fffp...ffff and the second was ffffp...fffp...fffffp...fffffffp
F= flash, and P = pause
Customer (name blocked for privacy)
Answer
January 11 12:52 PM (2 hours and 19 minutes and 26 seconds later)
         
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Pictureautodoc_2000 -- Auto Service Technician -- 98% Positive Feedback on 907 Car Accepts
ASE Master Tech w/ Advance Engine Performance
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January 11 4:18 PM (3 hours and 25 minutes and 34 seconds later)
         
thanks for the advise i will check the comprerssion, and bang the computer arond, and see what i get!
Customer (name blocked for privacy)
Reply
January 12 1:19 PM (21 hours and 1 minute and 38 seconds later)
         
the compression was good but the computer did nothing different! and when i jump started it, it would cutt off when the jumper cables were removed from the other car as if it was not getting power from the battery or sumtin!
Customer (name blocked for privacy)
Reply
January 15 4:11 PM (3 days and 2 hours later)
         
i replaced computer and alternator, engine dies under load!!!
Customer (name blocked for privacy)
Answer
January 15 4:17 PM (5 minutes and 52 seconds later)
         
REPLIEDCheck Mark
if you unplug alternator turn headlights on does it run better do not replace alternator or anything just let me know if it runs any better
Dan -- Auto Service Technician -- 97% Positive Feedback on 159 Car Accepts
master tech
Reply
January 17 1:33 PM (1 day and 21 hours later)
         
Reply to Dan's Post: it still had the same problem, so i relaced the alternator, and it runs better, but only when the baro map sensor is unpluged! the vaccum hose gives different responce when pluged and unpluged. The engine check light i off when the map sensor is pluged up, but it does not start with out pressing the accelarator pedal, and youhave to keep givin it gas or it will cutt off!
Customer (name blocked for privacy)
Answer
January 17 1:42 PM (8 minutes and 26 seconds later)
         
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Dan -- Auto Service Technician -- 97% Positive Feedback on 159 Car Accepts
master tech
Reply
January 17 2:51 PM (1 hour and 8 minutes and 55 seconds later)
         
i dont know... i dont have any essental tools! BUT ITS GETTING PRESSURE THO
Customer (name blocked for privacy)
Answer
January 17 3:50 PM (59 minutes and 21 seconds later)
         
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Dan -- Auto Service Technician -- 97% Positive Feedback on 159 Car Accepts
master tech
Reply
January 17 8:11 PM (4 hours and 20 minutes and 59 seconds later)
         
pressure is good according tp the tech
Customer (name blocked for privacy)
Answer
January 17 9:04 PM (52 minutes and 48 seconds later)
         
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Dan -- Auto Service Technician -- 97% Positive Feedback on 159 Car Accepts
master tech
Reply
January 18 2:40 PM (17 hours and 35 minutes and 56 seconds later)
         
ok i will mesure the presure and respond
with the results
Customer (name blocked for privacy)
Reply
January 30 1:48 PM (11 days and 23 hours later)
         
it ended up being the timing chain! do u sugjest getting the parts from u-pull? oh and i will accept you
Customer (name blocked for privacy)
Answer
January 30 2:07 PM (18 minutes and 50 seconds later)
         
REPLIEDCheck Mark

no go new you can destroy it pulling off

not too expensive for new parts

Dan -- Auto Service Technician -- 97% Positive Feedback on 159 Car Accepts
master tech
Answer
January 30 2:15 PM (8 minutes and 48 seconds later)
         
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Pictureautodoc_2000 -- Auto Service Technician -- 98% Positive Feedback on 907 Car Accepts
ASE Master Tech w/ Advance Engine Performance
Reply
January 30 3:20 PM (1 hour and 4 minutes and 27 seconds later)
         
Reply to Dan's Post: what tools will i need?
Customer (name blocked for privacy)
Answer
January 30 4:38 PM (1 hour and 18 minutes and 28 seconds later)
         
ACCEPTEDCheck Mark

no special tools a balancer puller that you can rent about the most special tool and you DO not want to use a sanding disc use a scraper i can fax you the procedure

Dan -- Auto Service Technician -- 97% Positive Feedback on 159 Car Accepts
master tech
Reply
February 1 7:26 PM (2 days and 2 hours later)
         
i just sent youy a payment. please fax the procedure that you mentioned to the following fax number 510-893-1205 labled "chris mchoder" thanks for all you help.
Customer (name blocked for privacy)
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