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2000 Buick Century 3.1L MIL Lamp on
i have replaced the egr valve reset codes and the light
came back on after thirty minutes driving then i
reprogrammed the computer and the light came on again Trouble codes: P1404 (egr valve stuck open or circuit performance). |
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1992 Cadillac Fleetwood 4.9L Stall
Customer brought me his caddy,says it needs a fuel
pump.Says the car starts to run poorly and stalls like it's
out of fuel when the tank is still 1/4 full.I verified the
stalling by draining the fuel tank(through my pressure
tester into a jerry can)until the f... |
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2001 Cadillac DeVille 4.6L Misfire, MIL Lamp on
need help gm tech's. i have a 2000 cadillac deville dhs
that keep's missfiring on #3 cylinder. i have checked
compresson 150psi, changed plug's (ac delco) changed coil
pack assy and even changed #3 fuel injector. it still has a
missfire in #3 cylinder. re chec... Trouble codes: PO303 (misfire 3 cylinder). |
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2002 Cadillac DeVille 4.6L Misfire
I have a missifire on #5 cylinder only at times under 4th
gear light load and when decelling and light throttle in
OD. I have swapped coil cassettes, replaced spark plugs and
boots on all odd # cyls (so I would'nt have to pull that
rear cassette again), perfor... Trouble codes: P0300 (Random Missfire). |
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1992 Chevrolet Corsica 3.1L No Start
92 Chevy Corsica will not start. Has Sparks,has fuel,
still will not start. Spray starting fluid, nothing. I
replaced the crank sensor, could not access the ECM codes,
replaced the ECM but still will crank but will not
start.Compression all above 100psi except... |
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1993 Chevrolet Pickup 7.4L Electronic
This is more a request for information. Im looking for the
"ABS Diode Module". Ive been told everything from the left
side of the dash to behind the glove box. I believe the
diode module is shorted and back feediing voltage to the
PCM and other places it shoul... |
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1993 Chevrolet Corsica 3.1L Poor Idle Quality, Hesitation
Good ol GM. This is our shop car and we are in dire need of
some help. At start up she runs fine. Great in fact, but
after about five minutes it begins to idle real rough and
hesitates. Checked over injectors and found a bad injector,
replaced and this fixed i... |
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1997 Chevrolet Venture 3.4L Air bag
This vehicle came in with the air bag MIL lit and codes
B1024, drivers senslo and B1071, SDM malfunction. Tested
system with a 2.2 ohm resistor and found no problems.
Replaced the SDM and all was fine for two months. Came
back. Same codes. Tested again, replac... |
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1999 Chevrolet Silverado 4.3L Misfire, MIL Lamp on
Greetings Hate to have a ask questions sometimes. Just cant
quite wrap my brain around this one, when the pcv valve is
installed in the valve cover, the ecm records misfires on
cyl #1. When you remove the pcv from the valve cover the
misfire counter stops. I h... Trouble codes: p0300 (random misfire). |
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2000 Chevrolet Impala 3.8L lr wss
thanks to all who reply,car came in with abs,trac off lites
on. scan for codes c1234 only code in abs. checked all
wheel speed sensors, related wiring, can not find problem.
here is one thing i know,back probe harness connector c101
lr wss wiring there is an a... |
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2001 Chevrolet Suburban 5.3L Poor Idle Quality, Hesitation, MIL Lamp on
Customer complained of no throttle response and instrument
cluster displays REDUCED ENGINE POWER. Trouble codes: P1120 (Throttle Position Sensor Circuit), P1220 (TP Sensor Circuit 1 or 2), P1516 (Electronic Throttle Module vs. Throttle Position), P1518 (PCM to TAC Module Serial Data Circuit). |
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2002 Chevrolet Suburban 5.3L Excessive Emissions, Poor Idle Quality, Hesitation, Stall, MIL Lamp on
havnt ran into one of these yet. eveyone says bad fuel
sensor.are they on the rail or in the tank? heard both also
is there aftermarket yet? Trouble codes: 178 (179 -), 179. |
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2004 GMC Sierra 6.6L Misfire
this unit runs rough at idle no codes all injectors on
cylinder cut out are the same except #5 is slightly
different and i mean not as pronounced on injector cut out
the boost sensor reads 13 psi at idle frp is 5700 psi and
stays stable , there are 3 injectors... |
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2001 Pontiac Grand Am 2.4L No Start, Misfire
Having a QUAD 4 nightmare. This vehicle backfires while
cranking. So far it has broken 2 starters. If the fuel pump
is disabled I can crank it normally, but I feel there is a
problem with ignition timing, because cranking with propane
will duplicate the backfi... |
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1992 Saturn SL 1.9L Excessive Emissions, Poor Fuel Economy, MIL Lamp on
This car lacks power on acceleration and doesn't want to go
over 55mph. It is running rich above idle speeds and sets
rich running code intermittently. It will go through 6 gal
of gas in 60 miles. It starts good and idles good and
nothing showing up on scanner... |
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2001 Saturn L200 2.2L Misfire
Notice that the coil packs are under intake and I am having
a problem. What is the best procedure to remove the plenum
to remove the coil packs to check the plugs. I have removed
all visible retaining bolts but it does not seem to want to
loosen. Saturn Techs ... Trouble codes: po306 (misfire cyl 6). |
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2004 Saturn Ion 1 2.2L ignition switch
what i have here is a recovered theft. the key is stuck in
the ignition. there is a switch under the steering column
cover, that makes it possible to turn the key to the off
position and remove it. my question is what activates that
switch? putting the vehicle... |
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1991 Cadillac Fleetwood 4.9L ABS Braking
Thank You For Your Help. Their Was A Crack In Right Front Wheel Speed Sensor Ring Causing Intermitent ABS Braking. It Would Not Set Any Codes. |
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1998 Cadillac Seville 4.6L instrument cluster, a/c control head
AFTER A RELENTLESS EFFORT COMPARING TWO IDENTICAL VEHICLES SIDE BY SIDE, I COULD FIND NO DIFFERENCE IN PIN VOLTAGES!!! SO I DECIDED TO PUT IT ALL BACK TOGETHER AND IT NOW WORKS PROPERLY...
I THINK BY DISCONNECTING THE VARIOUS MODULES IT RESET THE SYSTEM. THE... |
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2001 Cadillac DeVille 4.6L Poor Idle Quality, Stall
thanks for your help on this vehicle. special thanks to alex from georgia. you hit the nail on the head with the 3 7mm bolts in the fuse box. they were backed out at least 5 turns. also checked the powers and grounds at pcm and under thermostat housing. vehicl... Trouble codes: p0106 (map senser voltage low). |
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1999 Chevrolet Corvette 5.7L Mechanical
Its funny how most of my case problems have never been seen before. As always, I hope this case saves someone time and money with the there next vette. The failure was the drive shaft bushings/retainers were destroyed, the driver went far enough so that there ... |
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1999 Chevrolet Silverado 4.8L No Start
THANX TO EVERYONE WHO SPENT THEIR TIME, AFTER EXHAUSTING EVERY POSS. DIAGNOSTIC WALK THROUGH FINNALY FOUND THE CRANKSHAFT HAS EXCESSIVE END PLAY AND THE CRANK SENSOR HAS GOOD SIGNAL BUT BAD FREQUENCY ENGINE IS BAD Trouble codes: PO336 (crankshaft sensor). |
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1999 Chevrolet Monte Carlo 3.8L No Start
OK here is what we did. I looked up a different vehicle on mitchell on demand (98 monte carlo), found a differant flow chart. followed to a tee. came to where it said to replace crank sensor ( we already have), put an AC Delco sensor in and PROBLEM SOLVED!!! T... Trouble codes: p0440 (evap system large leak. No pending codes under generic obd2). |
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2001 Chevrolet S10 Pickup 4.3L #1 Spark Plug
Some replies asked if it was a cylinder/ring problem...checked thoroughly as noted in original request...not a cylinder/ring problem... some mentioned intake manifold/gaskets...some mentioned oil filter lines |
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2001 Chevrolet Express 4.3L No Start
I Thank all for the replies to this help request. Sorry didn't get back to you fast. The customer got sick and took along time to see if They are gong to fix this van. The answer at this time is they are going to tow the vehicle to the dealer for second opinio... |
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2001 Chevrolet Silverado 4.3L Mechanical
thanks to all that replied after finding that the o ring tsb dint apply to the 4.3 we replaced the lifters and fixed the problem thanks agian jeff |
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2002 Chevrolet S10 Pickup 4.3L electronic brake control module
thank you to all that replied i found the splice pack for the serial data and ohmed out the wire to the ebcm. it ohmed out good. i can communicate with all other modules with no problems. my best guess on this one is the ebcm is faulty but do to my lack of k... |
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2003 Chevrolet Tahoe 5.3L Automatic Tranmission
Since this is an "employee" vehicle we have not had time to try any of the fixes people were kind enough to send. We hope to get at it this week. Thanks to all the responded |
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2004 Chevrolet Silverado 6.0L abs module
Thanks to all that replied !!! Very good input...I checked voltage at main wire again ( 12 Ga red, plugs into front of motor)and had 12v ( not 14.2 ) with eng running...then tied a 4411 head light into it and it would not light it...so long story short, voltag... |
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2000 GMC Safari 4.3L Poor Idle Quality, MIL Lamp on
thanks everone. most replies were about the sticking poppet valves. that is what it was. i also replaced fuel pump because of the bleeding down koeo. the updated fuel injector assy was very nice and solved the missfiring, and fuel pump is now holdind pressure,... Trouble codes: po300 (random miss). |
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1997 Oldsmobile Eighty-Eight 3.8L No Start, Stall
After reading all of the relevant and not so relevant replies, I went back to the wiring harness. After checking the harness, connections and anything alse that may have looked suspect, this thing ran perfect BUT I DON'T KNOW WHAT FIXED IT! So frustrating. Cus... |
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2000 Oldsmobile Alero 2.4L Misfire
Well that was pretty much unanimus. I really appreciate all the responses I got from everyone. The plastic coil housing tower piece did end up being the problem, seems it was cross firing internally. Man the dealer is proud of that thing aren't they? For al... Trouble codes: P0301 (Misfire detected in cyl 1). |
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1996 Pontiac Firebird 5.7L Cuts out, Stall, Misfire, MIL Lamp on
It is fixed!! Thanks to Chris S., Ronnie [...]., William [...]., Terry [...]., Dean [...]., Craig [...]., Richard [...]., Dave [...]., and Richard [...]. for all the help. The owner took two weeks to think about the expenditure, but finally agreed. The fix was in fact the distributor. I disa... Trouble codes: P0300 (multiple misfire), P1361 (di low resolution circuit). |
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