Guest fredt1 Posted December 27, 2004 Report Share Posted December 27, 2004 how do you tell the difference between the two engines? are there any major differences that stand out and you can easily point out to a complete novice for when he looks under the bonnet Link to post Share on other sites
badboyV6 4 Posted December 27, 2004 Report Share Posted December 27, 2004 Im pretty sure that OBD1 runs with a standard distributor cap, whereas on the later models (Possibly 95 on???- OBD 2) they use an ignition pack. If you are looking at the engine on the right hand side is the pack- all the the leads run into it- its a small rectangle job (very expensive to replace too) I think there is another thread in the forum about this Link to post Share on other sites
Eat this 2 Posted December 27, 2004 Report Share Posted December 27, 2004 only early obd1s use dizzy most obd1s use coilpack as do all obd2 the switch was 95 n reg afaik sry i cant be any more helpfull than that Link to post Share on other sites
Guest fredt1 Posted December 28, 2004 Report Share Posted December 28, 2004 do odb1's have an ISV? Link to post Share on other sites
mightyvr6 0 Posted December 28, 2004 Report Share Posted December 28, 2004 yes Link to post Share on other sites
Guest fredt1 Posted December 28, 2004 Report Share Posted December 28, 2004 CHEERS, on another forum I use a guy is having major problems with his tick over and he's been told to clean his ISV, his engine is a 95/6 VR6, having had and still have a similar problem on my late 95 VR6 I was sure he didnt have an ISV to clean I think his problem is the same as mine and he has a duff throttle position sensor on the throttle body or a duff wire in the loom? Link to post Share on other sites
VR6Pete 1,455 Posted December 28, 2004 Report Share Posted December 28, 2004 I think you should be sending this guy to this forum for some advise Link to post Share on other sites
binliner 0 Posted December 28, 2004 Report Share Posted December 28, 2004 Search the forum... this has been covered several times recently so you should find everything you need to know Link to post Share on other sites
acf8181 0 Posted December 28, 2004 Report Share Posted December 28, 2004 only '92 cars have dizzy, the rest are all coilpack regardless of which obd they are. we've been trying to work out the exact year of changeoever from obd1-obd2 on here for a while, but i think we've concluded it was kind of fazed in (well, some obd1's may have not been regsitered immediately). as a genral rule upto and inc. M plate are obd1, N plate on is obd2.easiest ways to tell IMO are that obd2 have oval side repeaters, and bigger brakes (they have a spring clip across the caliper, where as earlier/smaller brakes don't)...though these could of course have been added to an early car. but combined with the reg it should be conclusive.engine wise, only obd1 has ISV, and i'll be workin on an obd2 within a week so will hopefully be able to give you a conclusive list of engine differences then (haven't got much experience of obd2 yet) Link to post Share on other sites
FishWick 21 Posted December 29, 2004 Report Share Posted December 29, 2004 OBD2 has a different MAF, ECU, throttle and inlet manifold. Link to post Share on other sites
binliner 0 Posted December 29, 2004 Report Share Posted December 29, 2004 visually the throttle body is the obvious differencs under the bonnet... OBD2 has a black plastic cover on the airbox side Link to post Share on other sites
Eat this 2 Posted December 29, 2004 Report Share Posted December 29, 2004 did u say the inlet manifold is different on obd1/2 iv got an obd1 schrick and have ordered the obd2 tb piece for it Link to post Share on other sites
binliner 0 Posted December 29, 2004 Report Share Posted December 29, 2004 actually easiest way is the colour coded bumper thing... that should indicate obd2 Link to post Share on other sites
Eat this 2 Posted December 29, 2004 Report Share Posted December 29, 2004 lol i havnt got a colour coded bumper but i know mines obd2 Link to post Share on other sites
VR6Rich 3 Posted December 30, 2004 Report Share Posted December 30, 2004 The throttle body side of the inlet manifold is the only difference between OBD1/2 inlet manifolds. Due to different throttle bodies. Found this out when I got an inlet manifold polished and it turned out to be OBD1 so wouldnt fit mine. :-( Link to post Share on other sites
antera309 3 Posted December 30, 2004 Report Share Posted December 30, 2004 Are all Corrado (ABV) engines OBD1? Link to post Share on other sites
mightyvr6 0 Posted December 30, 2004 Report Share Posted December 30, 2004 yes Link to post Share on other sites
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