Technical Hi newby with a problem

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Technical Hi newby with a problem

peterwhit

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Jun 3, 2008
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can anyone help? ive got a 2001 weekend 1.9 jtd When i overtake and accelerate hard, the injector light comes on intermitantly, when it does the performance is drasticly reduced!!! light stays on for 1or 2 mins then goes out and all is well again. had the car for four years with only one problem soon after i got it the mass airflow sensor died and had to be replaced. I have tried an injector cleaner in the diesel but no change!!??. many thanks.
 
Hello mate and welcome to the forum!!

Sounds like it could be the boost solenoid giving you problems. Have it put on a fault code reader and it should confirm or deny it, but its fairly common.

Alan
 
Hi Alan Funny you should mention that yes it has developed with the wet weather is this significant
thanks
Peter
 
Hi Alan
Just got the car back from fault code check and the fault code was
P0236 turbo boost presure sensor. Got a price for sensor at 48.49 can you tell me where the sensor is and i can check if its a damp problem

many thanks

Pete
 
Hi mate.... yea its a common problem. If you look down towards your turbo under the exhaust manifold, you will see 2 small pipes coming from the side of the turbo. Follow these back towards the air box and they will meat at the boost solenoid which has a third pipe coming from it. You can undo the clips that connect the pipes (remember which pipe goes to which inlet) and then disconnect the wiring harness. You can then use carb cleaner in a spray can and spray it into the outlets and allow all the black gunk that will come out to run off. Then stick it in the sun (or a slightly warm radiator) for a few hours and it should dry it all out. The you can reconnect it all up (check all the pipes for splits as this is also a common problem and whilst your at it...might as well) Take for a test drive and make sure you get in lots of overtakes etc to replicate the conditions that normally trigger the warning light and the ECU going into safe mode. Fingers crossed it'll work.... if not then you'll be an expert at replacing the solenoid as you've already had it off once!!

Good luck,
Alan
 
Hi mate
Thanks for the info i will give it a go on Saturday (y)

Many thanks for your help

ATB

Peter
 
Hi Alan
just got back from cleaning out the solenoid it took me ages to get it out from under the battery tray. ive cleaned it out as you suggested with some carb cleaner. it wasnt very dirty at all and the cleaner went straight through. Ive tried the car again but the problem is still there ?????
got any more ideas?? the waste gate cylinder is working fine when i rev it at standstill.

many thanks

Peter
 
Last edited:
Hi mate,

Ok.... The other thing that the fault code will relate to is the MAP sensor. Its located at the back of the engine on the manifold just to the left of the EGR valve. The wiring can get knocked on it when you remove the engine cover as it sits a bit proud. Remove the wiring plug and check the pins and plug it back in. If the problem is still there then you can check that the small hole in the sensor hasnt become blocked with gunk. To get at the 10mm bolt which holds the MAP sensor on, you need to move the EGR. You can get away with undoing the 3 13mm bolts and pushing the EGR back a bit rather than removing it all. Again, you can use carb cleaner to clear out any gunk.

As the wast gate is moving ok when accelerating, and after your cleaning, you can probably rule out the boost solenoid (dont worry you haven't wasted your time as a good clean will keep it working properly for longer)

It looks like its almost definately going to be a MAP sensor problem.

Alan
 
Hi Alan
many thanks for your advice spot on. cleaned out the sensor now running all ok Saved me a bundle and ive enjoyed the search(y)

Regards

Peter
 
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