replacement engine help - fitted a second 1.8 egine now it w

[mofo]

wondered if antone out there has come across this problem

i fitted a replacement engine into my 1990 190e the thing is it fires up no problems but it wont run for more than a few seconds then  cut out like there was no fuel

i have a cat1 alarm/ immob fitted could the problem be with this? but when the immob is active the engne will not turn overat all?

do these older model have a fuel cutoff as found in newer cars?

another thing pointing to the alarm is when it cuts out the indicators flash once

any advice would be appreciated
:angry::sad:

(Edited by mofo at 2:15 am on July 15, 2002)

 

[Arnie]

replacement engine help

Sounds more like a fuel system problem. Could be the injection system or something simple like an airlock.

Check the fuel pump and that you get an RPM reading from the engine speed pick-up (some ecu's use this to set the idle speed).

Maybe Andy can be of more help.

Where did the replacement engine come from?

Was it complete?

 

[mofo]

replacement engine help

yeah  yeah  the engine was complete and was from a place called Dronsfields in oldham the place looks the business.

when  we fitted the engine we had to change the flywheel for my own as this engine was from an auto box.

and we changed all the pick ups to the ones in my original engine aswell

but thats about it

 

[mofo]

replacement engine help

andy  the man who nows, help me plz...................!!!

 

[Arnie]

replacement engine help

...Just that I know (from experience) that most of these engine replacement centres just provide an engine taken from some other vehicle in a scrap yard. They give you a 5-year warranty etc, but all it means is that they'll keep changing your engine until they find one that works. Also, you're tied in to their (expensive) servicing schemes for the duration!

(Do you know whether the engine was running on a test bed before hand? ...as with a proper reconditioned engine)

Anyway, you said the place looked reputable so I just hope yours isn't one of these.

...But since you've mentioned changing the sensors around; well, that may be the cause of the problem.

The sensors are fairly simple devices, but the gaps, clearances and alignments need to be correct to get the right signals. You'll need some proper test and diagnostics equipment to check that they are functioning. This would also help to read the ECU error codes, if any.

Doing it by trial and error will take a lot of time and effort. If they are a reputable centre, they should have all the right equipment and be able to check the engine for you.

 

[mofo]

replacement engine help

found the cause of the problem it was teh fuel pump relay read a thing on this forum about sticking a paper clip into certain pin and viola it fired up and was running

thank all you guys out there

(Edited by mofo at 2:17 am on July 16, 2002)

 

[mofo]

replacement engine help

are there any differences between the fuel pump relays found in 1990 190e 1.8 manual and  a 190e auto 1.8 1993

if there is which one do i go for

1990 manual (original engine)

or

1993 Auto (new engine)

remembering that my car is   a 1990 h reg manual...!!!!

i ask this cause i am getting contradictory reports from the dealers and the specialists.

its not the first time I've been supplied the wrong parts from the "main dealers" it once took me three attempts to get the right handbrake cable from Honda

 

[Andy]

replacement engine help

Hi

Sorry I did not reply, the prolem with this type of repair is that it could be anything. For instance the flywheel you said you exchanged you may not of noticed but there are segments which are wear the tdc signal picks up. Although it wouldn't of started any way. But by the sounds of things you have picked up a repair from one of my earlier replies. Glad to see that sometimes people do have a look at the earlier replies. Would save a lot of time for some of you out there.



Good luck

Regards

Andy @ www.mercedesservicing.com

PS All the four cylinder fuel pump relays are the same.

 

[mofo]

replacement engine help

well I've ordered the part and it will arrive lets keep my fingers crossed and hope it works without a hitch

thanks to all who helped

another thing anyone out there want advice on I.C.E give us a call may be of help


(Edited by mofo at 12:21 am on July 17, 2002)

 

[mofo]

replacement engine help

well no luck again so I've took the car to a specialist a couple of miles down the road and I've been told that the ignition set up on my car is all wrong for the engine that I've got (93 k)

he said that the inlet manifold need replacing to sort out the problem, has any one out there got any views on this.

at the moment the engine is racing and misfiring.

 

[Arnie]

replacement engine help

I'm not an expert on fuel systems, but I really can't see what would be of significant difference on the inlet manifold between an auto and manual. Some engines have a variable-length resonant chamber in the manifold and this is controlled by the ECU. Its operational programming may be different for an auto and manual but the hardware should be the same?

The ECU, however will have additional CAN-bus features for "talking" to the automatic gearbox, if it is of the later electronically controlled type. Again, make sure that your sensors on the flywheel or crank-pully are ok as these determine the ignition and fuel injection timing.

Did you keep your original ECU?

Ask your specialist for a proper explanation. You're paying him.

PS:
May also be worth checking the air massflow meter, which determines the amount of fuel (engine racing), though most ECU have a back-up mode if it's not working properly.(.. Unless you have one of the jetronic, electro-mechanical systems.)

(Edited by Arnie at 7:28 pm on July 18, 2002)


(Edited by Arnie at 7:32 pm on July 18, 2002)

 

[mofo]

replacement engine help

sorry i forgot to mention that the engine is the wrong one due to the fact that the 93K engine runs with a CAT on board where as mine doesn't

and yes I'm still using my existing ECU