Golf IV / Jetta IV :: Pump Won't Prime After Cleaning MAF Sensor / Car Cranks But Not Starting
May 23, 2014
I'm having a situation here. Yesterday I decided to clean the MAF in my 01 VW Jetta 2.0, so without disconnecting the battery I unplugged and took the MAF sensor out and sprayed it using "CRC MAF sensor cleaner", let it dry for about 30 to 40 minutes and then re installed it. When I tried to start the car, I opened the ignition (ON position) and didn't hear the pump priming, still tried to start the car, it when on for about 2 seconds at rough-800rpm idle then rpms dropped and car stopped running. Then, I tried to started it again a couple of times more and I still don't hear the fuel pump priming and the car will crank but not start.
Did I ruin/blew the fuel pump or something in the system? I don't understand what could have possibly gone wrong. I already tried searching for it but did't find the exact same situation and though details might be important.
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My car was performing poorly then Stalled while driving, no start since. Put starting fluid in open throttle body for 5 secs, then tried to crank.
fuel pump doesn't turn on (can hear it) for 2 seconds When the Ignition switch is in ON position, You can hear it when cranking in Run position though. So this makes me think that Its not building enough pressure
Pulled it out, hooked it up to a 12V batt and it works.
Someone else changed the spark plugs. Fuel comes of of the line just before the fuel rail. Doesn't squirt like there's a lot of pressure.
Pulled the injectors clean them put them back in with new O rings. Fuel only came out of 2 injectors when cranking.
Pulled the spark plugs check for spark while cranking. They all spark. Put new ones in.
Pump does send fuel when cranking which means the pump, and pump relay should be working I assume.
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I recently picked up a 2000 jetta vr6 for a very good price its a glx I have owned a vr6 before and done timing chains myself on it this one is a glx , I am having 5 fault engine codes on my vagcom they are cam position sensor , knock sensor, secondary injection pump, and mass air flow it ran fine 100 miles yesterday this morning the epc came on then went off and ran bad can these codes all be related or do I have to replace each sensor individually..
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My R is garage kept, and every morning when I open the door, I can hear the fuel pump make a quick priming run. Well, not "every morning"; sometimes it doesn't do it's two second prime, and when that happens the car usually takes two cranks to start.
(I know that there is a timer. If you have been driving the car, shut the car off, close the door, and then open it, it is not going to prime, but I'm talking about after the car has been sitting all night.) This issue could be related to my door-lock-craziness issue.
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I dont know if this is an issue, but here goes. You know the fuel pump prime sound when you open the drivers door? The buzz? It has recently stopped. Should I be concerned? Is this a foreshadowing of hard times to come? Or am I just over analyzing?
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2005 1.8t gti wont start. The other day I was driving on the highway when a thin plastic type wrapping got caught in my serpentine belt. The car immediately died and I hit the gas and nothing and with no power steering i pulled over to the side.
Timing belt was done with water pump and tensioners
Spark plugs and coils are brand new
What fuel line to disconnect to test if the fuel pump works? Like I said in the title I cant hear the fuel pump priming. The engine was running 100% before this 2 techs saw it and the vw dealer i workrd at looked it over.
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So, before we diagnose further, i have my fuse #43 pulled because that has been the only thing that somehow magically makes my car run when its not plugged in. I believe I've been dealing with a bad distributor and haven't come up with the funds yet to mod it for a v6 mustang coilpack.
BUT as the title describes, this just started happening today. The cluster wont turn on, fuel pump is cranking over, and the starter will whine as it cranks but no spark. Is the distributor getting that bad or am i looking at something worse?
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I'm fixing a 2007 Sonata that was in a front end collision, I've replaced everything that was ruined in the wreck (as far as I know), and also replaced the SRS control module, impact sensors, and also the airbag. The car starts with starting fluid and there isn't any damage to the engine so I'm not concerned with something being wrong with that, but the fuel pump won't prime and before the wreck it drove fine. So what could impede the fuel pump from priming? I've checked the wires and they're not sending power to the fuel pump so I feel like the pump should still be fine, it's just it's not getting power. What could cause this?
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Instead of a normal humm I get a growling noise when I turn the key to prime the fuel pump.. I am think fuel pump issues.. but no sure if thats what it is??
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I decided to take out the throttle body and clean it with throttle body cleaner that I got from autozone, after I put everything back, I started my car and the motor was shaking and smoking a lot out the muffler and just would not be drivable at all. the RPM was just going up and down and hesitating bad. later I took off the spark plugs and they were very much burnt black at the tips and that is probably not normal right? but I replaced them with NGK BKR7E spark plugs and it still gave me the problem.
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Any tips and tricks on cleaning this? Just did an entire wash clay compound with orbital and a wax. Car looks great for a 12 year old but This area is a bit tricky clay gets stuck in the pores and nothing seems to clean it well. Id like to clay it but its not working well.
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Lately my car takes 2-3 cranks before it starts and I'm thinking it could be my fuel pump. There were a few times recently it took like 8 cranks to start. How to test fuel flow to see if it has issue? Also, could a old battery cause this issue?
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The car cranks absolutely 100%, in no way is this the battery, it just will not start. Then I noticed the fuel pump wasn't shutting off, I only had a quarter tank in the car, I figured as hot as it was today I was getting some vapor lock with the fuel. Went and got some gas, still wouldn't start, then the dash started yelling at me telling me I have no oil pressure, shut off the car.........car you are not running calm down. So then there's that along with the car not starting. I took the fuel hose off to make sure I was getting fuel, I was, so I took the key back out, but the car would not give up, the fuel pump kept going and the dash was blinking violently. When I put the hose back on and got compression it finally stopped, that can't be how the cars work can it? The fuel pump doesn't shut off if there's no compression? Checked all fuses and the fuel pump relay, every was fine, the fuel pump even still ran with the relay out. What could be going on, I can't seem to find one damn thing even related to the fuel pump not shutting off.
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Was driving normal and my 2004 r32 died. It felt just like it ran out of gas. Fuel pump was not making any noise. I replaced fuel pump relay and now i can here the fuel pump making noise. Pulled the fuel pump line off and fuel is coming out the line. So now i checked for spark and have none. I have 12 volts at the coils. I ohmed out the crank sensor and have .777 k ohms. I also checked codes with generic snap-on scanner and found no codes.
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About a month ago I went to start my car and it started up and died and now it won't start at all. All it does is crank and crank and crank. My vagcom say j271 relay open circuit . so I replaced the 428 relay and it still doesn't start. I'm also not getting any epc or cel light with the key in the on position which is strange to me. But if I swap the 428 relay with the 100 relay right next to it I get all the dash lights like I'm suppose to but as soon as I try to start it the two lights go out and won't come back on until I pull the relay out and put it back in. I hate obd2 so much sometimes.
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So I am not getting spark. Changed crank sensor and cam sensor still nuthing. I am getting no power to fuse 28 and 34. Also I am getting voltage on coil harness on pins 1 and 2 getting about 11.8 and on 2 and 4 getting 1.2. I am starting to think bad ecu?
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I've got a Mk4 Golf 2.0L with 136k on the clock. Hasn't really given me any problems in the past year of ownership till now. I recently picked her up from the shop for a rear axle beam replacement. When I picked her up she drove fine. I headed to class for the day and she sat in a parking lot for 6 hours or so. I hop in and try to fire her up and nothing. Had to have her towed back to my apartments. I've checked fuses, spark plugs were recently replaced but I am getting no spark. When I crank it I do hear the fuel pump and I can smell gas when I crank it. The rpms go up just a bit, 100-200 range. Going to check out the crankshaft sensor later on. maybe it could be the coil pack as well? I don't know a huge amount about these cars, only some info. And I sadly have no access to a scanner to check for codes.
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To start I was driving home the other night, car just stalled out and would not start back up, at all. Just cranks over and over. Things I have checked
- I am getting a spark from the plugs
- Fuel pump primes when key is turned on
- Fuel comes out of lines, even more so when key is switched over so pressure should be ok, I have not checked exact pressure due to not having a gauge.
- I have checked all relays under the steering wheel (just visual) some had brownish on the connectors and I cleaned all that off.
- All fuses are good and not blown (voltage meter also showed power coming to a few key fuses I checked.
I am down to a few things that I have read could be possible causes
- Camshaft Position Sensor
- Crankshaft Position Sensor
- Not sure what else to really check
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So I bought a project golf vr6, but the head and some of the components were off, I have all the parts but I just cannot figure out why it is not wanting to start, it cranks over but does not start...
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I am having a problem starting my VW Golf 2.0 since yesterday. When i turn on the ignition the car cranks up but does not start. I did a computer odb check and it gave me out some error codes.
here are a few things that i noticed sometime back:
While driving once or twice suddenly the car wasn't accelerating when i pressed the accelerator. This happened to me twice but then it was OK. Didn't have an issue again.
Sometimes the car gear doesn't shift gear i have to shutdown the car and start it again, then it shifts gear properly. I feel like the car is consuming a bit extra fuel. How I can fix this and what the issue is?
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On my 10 LS460 swb am contemplating cleaning the MAF sensor.
As the battery is in its own corner, I'm not too sure how to disconnect the negative terminal so I want to know, if I clean the MAF sensor and leave the battery connected, will that have adverse affect?
I think pulling and re plugging a specific fuse will also work?
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