When is cold, the engine starts but stops after 2-3 minutes. I can not start until after standing for 2-3 hours, and again stops.When I try to start, signs that would not fill with gasoline.What should I check first, what should be changed?
It was....now engine don't start!
Pontiac Trans Sport 1996,2.3l,16v,Quad4 DOHC
We have a 1992 Pontiac Trans Sport with the Chevy 3.1 V6 TBI engine.
Engine was running poor because of a faulty Coolant Temperature sensor (rusted-out pins). Changed the sensor and cleaned-out rust from the socket and now it runs smooth when cold with decent acceleration.
Problem is that cylinder #6 is not firing when engine is hot at operating temperature. Engine shakes lightly but performance remains good.
Distributor, rotor, spark plugs, spark plug wires and Oxygen Sensor were all changed 1 week ago with new ACDelco parts. What to check next?
2800rot./min when driving. engine showed signs that he drowns, I joined, he went shortly after that began to fall speed and the engine stopped. Then I could not start. Come to be fuel, received a little dirt somewhere and no longer feeds? What can I do?
View 3 RepliesLast week, the engine stopped twice in the 2 minutes after initial start....but then managed to take me back home. Was away for 1 week (not with TS) then when back , tried to start ...no joy.
This duplicates a similar event 8 years ago...solved with the ignition module being replaced.
[URL] .....
NO codes.
There are 2 options: crank sensor or ignition module. Will go for some tests and will report.
Looking for a wiring diagram for a 96 model with 3.4 engine? The horn fuse keeps blowing and I don't know what else is on that circuit to check. The horn works when the fuse is replaced but the fuse blows at some time afterwards.
View 5 RepliesWe have a '92 Pontiac Trans Sport with a 3.1L V6 TBI engine. Last Sunday evening it refused to start like someone left the transmission in Drive and the Park/Neutral switch was preventing it to start. There's the buzz sound from the fuel pump when you put the key on then nothing when you turn it to start the engine.
I checked the Park/Neutral swith by connecting an ALDL cable to the OBD port and it indicates correctly when I move the lever to Drive or Parking/Neutral. The only error code stored is "Fuel Pump Relay" but the Fuel Pump appear to be working?!
Battery is good, fuel pump fuse intact and the Park/Neutral switch appear to be working. How we can tackle this problem?
I've replaced the drain plug, filled up the radiator with proper coolant/antifreeze, turned on the engine then closed the cap to see the needle going fast to near the red mark. I turned off the engine and touched the cap with my finger but it was cold so I did the same with a hose, not hot.
Well, it seems the problem was not all circuit was filled. I did add more after a while running and now it is working normally (knock wood).
I have a 97 Pontiac Transport and I was traveling down the road and suddenly i lost oil pressure the light came on and it started clattering so I checked the oil level and it was fine so i had it towed home. I changed the oil using a higher grade oil and lucas oil treatment and started it ...I still have the problem what do i do...
View 7 RepliesOne of the '92 Pontiac Trans Sports (3.1L V6 engine) had developed a huge thirst - the fuel consumption had doubled along with a serious loss of power. All ignition components - distributor cap, rotor, spark plug wires and oxygen sensor are new ACDelco's.
ECM is not throwing-up any fault codes but we suspect a vacuum leak since this engine runs better with the air intake covered-up almost completely.
Is there any way to trace and fix this kind of issue? Any vacuum diagram for this car - I couldn't seem to find it in the GM Service Manual... How would you suggest we proceed?
I have a 1996 Pontiac Trans Sport 3.4L (without Passkey anti-theft) which on occasion won't start after being parked. The fault only happens when the vehicle has been sitting, it does not die while being driven (so far). The engine cranks normally but does not fire. The peculiar and significant thing about the fault is that the fuel pump relay (driven directly by the PCM), chatters at about a 10 Hz rate. Instead of receiving a steady 12VDC to keep it energized, it is receiving a pulse stream from the PCM.
The first few times this occurred, I heard the relay "chattering " under the hood , and was able to start the van by unplugging the relay and shorting the connector terminals for the contacts together with a wire jumper ( these terminals connect "hot at all times" 12VDC from the PCM fuse (orange wire) through the relay contacts to the fuel pump +ve). The electric pump would run and I could start the engine easily. By the time I arrived at my destination, the fuel pump relay 'drive' would be normal and I could plug the relay back in and continue normal operation.
The last few times this problem occurred, the van would not fire -- no spark as long as the relay drive was pulsing. When it would finally go back to normal operation of the relay, the engine would start OK.
Last Spring in cold weather I had the van towed 2 blocks to a Pontiac dealer with this problem. The problem resolved before they inspected it; however after the Technician's inspection the Service Advisor said there was no fuel pressure at the test port and that the pump must be deffective (shorted), overloading the relay causing it to chatter. That diagnosis made no sense to me. They wanted to replace the fuel pump as the solution ($600). I got past the Service Advisor and asked the mechanic to show me the fuel pressure -- the car started on the hoist when I tried it, and fuel pressure was normal (>30psi). I left with just the relay changed, as they thought the original would have burned -up contacts from excessive current to the pump. (I cut it open later and found its' contacts to be perfect). While at the dealership I asked the S.A. if he knew of any TSBs, or other incidences of this problem; he said he had not heard of this problem before.
I had the same problem one week later, but not again all summer until this Fall's cold and wet weather. I had to have the vehicle towed home and it still wouldn't start the next day. As soon as I accessed the PCM behind the glove box and jiggled it the relay chattering stopped and car could start. However, later the same day, still in the driveway, the fault was back and no amount of jiggling or other manipulations had any effect. Later still I went out to test for spark, and the fault was gone. (Cold, wet weather all day).
Vibration seems to have little effect. I have checked the PCM connectors' security and pulled, twisted and wiggled the wires coming from it, as mentioned above, to no effect. I suspect the fault is inside the PCM and is thermally induced by cold weather. The next time it happens I will try a warm hair dryer on the aluminum housing of the PCM. I wonder if there is a fix for this (repair a cracked solder joint, etc.) other than replacing the PCM. I work in electronics, and will open the PCM up and inspect it before forking out for a new one.
1993 Transport 3.8 L
Starting out from stop it seemed to get noisy and was very late shifting to 2nd. Slowed down and tried again; this time it did not want to shift to 2nd at all. Brought it home slowly.
Trans fluid was right up. I did another road test, running it manually through the gears so I could easily hear and feels the shifting. 1-2-D-OD perfect; did this twice of thrice. Starting out from stop on the highway a couple times, it shifted up perfectly. I did some kick-downs and manual shifting; everything is working fine.
Could this have been a linkage problem? Could running it manually through all the gears smarted up the linkage or something? Could it be related to the 'modulator valve'?
I have a 1996 ford taurus lx 3.0 v6 engine dohc about 150000 miles..when i start the car about 5 mins the car dies..so i start it back up then it dies again.. So I start it back up then i keep my foot on gas the car stays running as soon i take my foot off gas it dies. I did have a new fuel pump in..
View 12 RepliesI own a 1996 Toyota Celica. When the car is cold it starts and run for about 5 minutes then dies. When I try to start the car, with the key in the 'on' position, I have no check engine light. If I crank the engine and release the key to the 'run' position, the 'check engine' light turns on. When the car is cold or I leave it to rest for a couple hours and I turn the key on the 'check engine' light turns on. it is after the car stalls out i have this problem. At this point if I spray some starter fluid into the intake the car attempts to start. I thought that it was the pump so I installed a new one. Fuel pressure is good. It seems to me that the injectors are not working.
Is it the computer? Given that fuel is getting to the injectors but the injectors are not firing, Given that I have ignition since when I spray starter fluid into the intake the car fires up and runs until it runs out of starter fluid. Where do I start? I have not used a noid light as yet to check the injector harness and as you all know the harness is a little difficult to get at because of its location under the intake.
The air starts out very cold but after a few minutes it warms up. A few minutes later it is cold again but then it warms up. This cycle repeats itself throughout the drive.
View 1 RepliesThese super-hot days our TS had started to develop a very strange problem:
- when you first start the engine the A/C works normally and cold air blows from the front vents on A/C or MAX as usual
- if we shut-down the engine and try to engage A/C or MAX again the cold air would only come-out through the top (windshield) and low vents - no more front ventilation
- all solenoids appear to be working (moving)
If I press the gas a little hard in drive, my tires squeal but if I'm in reverse I can feel a slipping in the trans. If I try to back a trailer up an inclined driveway, it won't go, the trans slips. I have no crud in the pan. I've replaced the reverse boost valve. I installed a Trans-Go kit which is suppose to eliminate the reverse slip but it hasn't worked. Everything else works just fine and my fluid is red. I have engine braking in 2nd and 1st. The van backs up fine, it just does this in reverse under load.
View 2 RepliesMy 1996 Firebird with 3800 series II V6 engine makes a ringing noise. The noise appears to come from the front of the engine (pulley area) and sounds like an old fashioned fire alarm. It usually occurs after the engine has warmed up and cannot be heard from inside while cruising.
View 4 RepliesThe car runs fine for several miles/minutes, suddenly the tach starts to climb, up a jump, then up again. This is when the engine starts to run really rough and I pull off the road, let the car cool down and make it the rest of the way to work (about 15 miles).
Here is what I have done: Radiator flush and fill; Oil and filter change; Cleaned EGR and replaced gasket; put in new spark plugs; changed the transmission filter and oil; replaced the O2 upstream and downstream sensors; replaced the thermostat 195 to 180; replace the coolant temp sensor.
The check engine light does not come on (except on start-up check sequence), so it is working. Their are no trouble codes (other than when I removed the downstream O2 sensor to check if I would get errors). The cat converter doesn't glow at night, and doesn't rattle when tapped. The resonator in the exhaust does make a rattling sound, but I don't see why that would be the problem.
I am at my wits end. Any clue what I should try next? The water pump isn't leaking.
I'm experiencing erratic shifting ending in a stall after about 10 minutes of driving. The trans seems like its searching for the right speed then the engine stalls. I've heard about air in the trans fluid, which is caused by fluid overfill and I've heard about MAF sensor which I replaced to no benefit. Right now I'm going to drain the pan, install a filter and refill accurately, especially as I have the pan off?
View 1 RepliesHere is my question.. 94 Z28 38K 6spd. Starts right up and runs well, for about 15-20 minutes then will shut down( like the key was turned off) When this happens I have no signal to either the ignition module or to the injectors.
This car was damaged by an idiot that flooded the dist. with coolant doing a flush. They replaced it with a Advance auto remain. This is when the trouble started. I did replace the I/M with an AC OEM Module, no change, verified all wiring from the computer to the Dist. and I/M. All checked out. I am thinking that the cheap remain unit is my problem and am looking to get the MSD Opti spark system to hopefully fix and to prevent this problem from happening again.
I cannot retrieve codes (94 won't flash CEL codes). Is there any other method of diag I could use to verify my suspicions. Oh, there is not response from the Tech either once the engine dies.
My Prius waste gas by always starting the engine. Even with the battery indicator at full charge. Every time the Prius is shut down, like leaving the car to go into the store for 3 minutes or more or backing Prius out of garage, the engine starts up and runs for about 4 minutes, regardless of being fully charge or not.
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