Guest Rsand85 Posted September 19, 2011 Share Posted September 19, 2011 would anybody be able to tell me if the fuel pump control module inside the rear wing is controlled by the ecu?have power coming into it but no power getting to the pump itself and also no spark at the plugs wandering if these are both controlled by the ecu and it wont give spark as it cant pick up on the pump running?thinking the ecu has packed in!any help on this would be much appreciated Quote Link to comment Share on other sites More sharing options...
Konrad Posted September 19, 2011 Share Posted September 19, 2011 (edited) Check immobiliser first, car suppose to give spark even without fuel pump working. Pins 21 and 22 on small ECU plug are fuel ECU control ones. Edited September 19, 2011 by Konrad (see edit history) Quote Link to comment Share on other sites More sharing options...
Guest Rsand85 Posted September 19, 2011 Share Posted September 19, 2011 i can bypass the pump control to run pump but it dosent help as i have no spark just floods the plugs.was over the alarm system it all seems to be ok was working perfect one day then next day it was not car never moved from the spot! that's even more confusing now if the 2 aren't connected really not sure whats next. Quote Link to comment Share on other sites More sharing options...
Konrad Posted September 20, 2011 Share Posted September 20, 2011 Check if you got anything on pin 22 small ECU plug, as this one goes to fuel pump relay. Check fuses and relays first, might be that one of them is gone. Quote Link to comment Share on other sites More sharing options...
Guest Rsand85 Posted September 20, 2011 Share Posted September 20, 2011 will do that i have checked every fuse and relay with no joy im afraid cant understand what it would be mite get another ecu and fuel pump control unit to see if it sorts it Quote Link to comment Share on other sites More sharing options...
Guest Rsand85 Posted September 27, 2011 Share Posted September 27, 2011 ok still haven't got this going getting power to both fuel pump control and the coil yet the pump is not working and im getting no spark also getting power at injectors.also i cant read the engine fault codes as the engine management light will not come on!!tried 3 fuel pump control modules and 2 ecus also new rotor arm and cap along with new coil and leads!!!running out of ideas any help would be much appreciated Quote Link to comment Share on other sites More sharing options...
absz Posted September 27, 2011 Share Posted September 27, 2011 (edited) The engine management light is fused in the footwell fuse box 7.5amps not sure which one but it also feeds the MAIN ecu check to see if you have voltage. also the fuel pump ecu has a live feed via relay BUT has another signal feed that comes from the MAIN ecu if there is no crank signal the ecu will not switch the pump on. or create a SPARK Edited September 27, 2011 by absz (see edit history) Quote Link to comment Share on other sites More sharing options...
Guest Rsand85 Posted September 27, 2011 Share Posted September 27, 2011 ok thought it must work that way just starting to confuse me now would the ignitor have any affect on things?thanks for the help Quote Link to comment Share on other sites More sharing options...
absz Posted September 27, 2011 Share Posted September 27, 2011 No the igniter will only control the spark. the crank sensor is part of the distributor, it can be tested using a multimeter but not sure which wires from the top of my head. Quote Link to comment Share on other sites More sharing options...
Guest Rsand85 Posted September 27, 2011 Share Posted September 27, 2011 i see never knew this did look for a crank sensor first to!i will try to dig up a diagram Quote Link to comment Share on other sites More sharing options...
absz Posted September 27, 2011 Share Posted September 27, 2011 the tahco (rev counter) is also fed via the crank sensor, when cranking the engine over IF the rev counter needle is bouncing slighty then it means you have a crank signal and the sensor + wiring are fine. Quote Link to comment Share on other sites More sharing options...
Guest Rsand85 Posted September 27, 2011 Share Posted September 27, 2011 got no response from rev counter tried this to thought it was strange Quote Link to comment Share on other sites More sharing options...
Guest Rsand85 Posted September 28, 2011 Share Posted September 28, 2011 ok checked that out tonite dude no fuses blown.checked the following fuses for power IGN 7.5A-no power ECU-IG 10A-no power ECU-B10A-no power also checked at the igniter getting 12 v on 2 out of the 5 wires black/red and black/orange Quote Link to comment Share on other sites More sharing options...
absz Posted September 28, 2011 Share Posted September 28, 2011 (edited) do you have a wiring diagram that i can look at to see were the feeds come from? as the last time i stuck my head under a NA engine bay was over 6 years ago, i'm sure that the ignition feed is direct from ignition switch to fuse and then to MAIN ecu. if you have lost power feeds it can be alarm wiring or fusebox connector plugs as a guess. Edited September 28, 2011 by absz (see edit history) Quote Link to comment Share on other sites More sharing options...
Guest Rsand85 Posted September 28, 2011 Share Posted September 28, 2011 i will try to find diagrams do you think it mite have anything to do with a clifford concept650 alarm system with intellistart?? Quote Link to comment Share on other sites More sharing options...
absz Posted September 28, 2011 Share Posted September 28, 2011 its possible if you remove the steering column cover and have a look at the ignition switch the alarm will be connected to the ignition circuit between there and the footwell fuse box might be worth bypassing it or just connecting a bridge link to that wire. ALSO the clifford alarm will have its own fuses approx 3 if i'm right.might be worth looking for them aswell Quote Link to comment Share on other sites More sharing options...
Guest Rsand85 Posted September 28, 2011 Share Posted September 28, 2011 theres 5 fuses as i fitted the lot myself all connections are soldered and heat shrunk opposed to the cowboys who fitted it by twisting the wires together and taping over them!!it was forever giving bother so rewired it and added the intellistart its never given any hassle for 2 years thats not to say it wouldn't be the prob tho. Quote Link to comment Share on other sites More sharing options...
absz Posted September 28, 2011 Share Posted September 28, 2011 do you have any back ground on how the fault first started? ie jump start or just did't start one morning. Quote Link to comment Share on other sites More sharing options...
Guest Rsand85 Posted September 28, 2011 Share Posted September 28, 2011 ok stripped the wiring out or the engine bay as im in the process of re spraying replaced all the wiring as it was once it was painted problem was the timing was off as i had the distributor out but was getting plenty fuel and strong spark just wouldnt fire due to timing!timed it up and had to start it with booster as batt was flat thats why i thought i maybe spiked the ecu!!the alarm is working fine but as i say now lost spark and fuel. Quote Link to comment Share on other sites More sharing options...
absz Posted September 28, 2011 Share Posted September 28, 2011 did you remove the wiring loom from the ecu as there is some additional plugs white plug and a grey one along with the ecu plugs MAKE sure these plugs are firmly in place and pushed all the way home. apart from the engine light is there any other dash warning lights that are not working? Quote Link to comment Share on other sites More sharing options...
Guest Rsand85 Posted September 28, 2011 Share Posted September 28, 2011 i did but after it had stoped working i only removed 2 plugs tho one large one with a 10mm bolt and a smaller one clipped in.and no the engine management is tho one and only light thats not working. Quote Link to comment Share on other sites More sharing options...
Konrad Posted September 28, 2011 Share Posted September 28, 2011 Make sure again if grey and white are at their proper place, there are few additional sockets in the passenger footwell and I know from own experience that white plug will fit to at least one redundant socket on the left side. Quote Link to comment Share on other sites More sharing options...
Guest Rsand85 Posted September 28, 2011 Share Posted September 28, 2011 thats just it when i swapped the ecus dont remember seing these 2 plugs how many in total go into the ecu??2 no? Quote Link to comment Share on other sites More sharing options...
absz Posted September 28, 2011 Share Posted September 28, 2011 you have two stuck together with the 10mm bolt+one seperate for the ecu then on the same loom there is the additional two plugs that connect onto the wiring harness plugs just under the heater matrix box. Quote Link to comment Share on other sites More sharing options...
Guest Rsand85 Posted September 28, 2011 Share Posted September 28, 2011 ah never clocked them now will check to see if there loose but i certainly didnt have them off Quote Link to comment Share on other sites More sharing options...
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